신지원 / LineMusicChatbot

Go to a project
Toggle navigation Toggle navigation pinning
Switch branch/tag
API.html 84.6 KB
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="Author" content="M Mclaughlin">
<title>bignumber.js API</title>
<style>
html{font-size:100%}
body{background:#fff;font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:13px;
  line-height:1.65em;min-height:100%;margin:0}
body,i{color:#000}
.nav{background:#fff;position:fixed;top:0;bottom:0;left:0;width:200px;overflow-y:auto;
  padding:15px 0 30px 15px}
div.container{width:600px;margin:50px 0 50px 240px}
p{margin:0 0 1em;width:600px}
pre,ul{margin:1em 0}
h1,h2,h3,h4,h5{margin:0;padding:1.5em 0 0}
h1,h2{padding:.75em 0}
h1{font:400 3em Verdana,sans-serif;color:#000;margin-bottom:1em}
h2{font-size:2.25em;color:#ff2a00}
h3{font-size:1.75em;color:#4dc71f}
h4{font-size:1.75em;color:#ff2a00;padding-bottom:.75em}
h5{font-size:1.2em;margin-bottom:.4em}
h6{font-size:1.1em;margin-bottom:0.8em;padding:0.5em 0}
dd{padding-top:.35em}
dt{padding-top:.5em}
b{font-weight:700}
dt b{font-size:1.3em}
a,a:visited{color:#ff2a00;text-decoration:none}
a:active,a:hover{outline:0;text-decoration:underline}
.nav a,.nav b,.nav a:visited{display:block;color:#ff2a00;font-weight:700; margin-top:15px}
.nav b{color:#4dc71f;margin-top:20px;cursor:default;width:auto}
ul{list-style-type:none;padding:0 0 0 20px}
.nav ul{line-height:14px;padding-left:0;margin:5px 0 0}
.nav ul a,.nav ul a:visited,span{display:inline;color:#000;font-family:Verdana,Geneva,sans-serif;
  font-size:11px;font-weight:400;margin:0}
.inset,ul.inset{margin-left:20px}
.inset{font-size:.9em}
.nav li{width:auto;margin:0 0 3px}
.alias{font-style:italic;margin-left:20px}
table{border-collapse:collapse;border-spacing:0;border:2px solid #a7dbd8;margin:1.75em 0;padding:0}
td,th{text-align:left;margin:0;padding:2px 5px;border:1px dotted #a7dbd8}
th{border-top:2px solid #a7dbd8;border-bottom:2px solid #a7dbd8;color:#ff2a00}
code,pre{font-family:Consolas, monaco, monospace;font-weight:400}
pre{background:#f5f5f5;white-space:pre-wrap;word-wrap:break-word;border-left:5px solid #abef98;
  padding:1px 0 1px 15px;margin:1.2em 0}
code,.nav-title{color:#ff2a00}
.end{margin-bottom:25px}
.centre{text-align:center}
.error-table{font-size:13px;width:100%}
#faq{margin:3em 0 0}
li span{float:right;margin-right:10px;color:#c0c0c0}
#js{font:inherit;color:#4dc71f}
</style>
</head>
<body>

  <div class="nav">

    <b>v9.0.0</b>

	<a class='nav-title' href="#">API</a>

    <b> CONSTRUCTOR </b>
    <ul>
      <li><a href="#bignumber">BigNumber</a></li>
    </ul>

    <a href="#methods">Methods</a>
    <ul>
      <li><a href="#clone">clone</a></li>
      <li><a href="#config" >config</a><span>set</span></li>
      <li>
        <ul class="inset">
          <li><a href="#decimal-places">DECIMAL_PLACES</a></li>
          <li><a href="#rounding-mode" >ROUNDING_MODE</a></li>
          <li><a href="#exponential-at">EXPONENTIAL_AT</a></li>
          <li><a href="#range"         >RANGE</a></li>
          <li><a href="#crypto"        >CRYPTO</a></li>
          <li><a href="#modulo-mode"   >MODULO_MODE</a></li>
          <li><a href="#pow-precision" >POW_PRECISION</a></li>
          <li><a href="#format"        >FORMAT</a></li>
          <li><a href="#alphabet"      >ALPHABET</a></li>
        </ul>
      </li>
      <li><a href="#isBigNumber">isBigNumber</a></li>
      <li><a href="#max"        >maximum</a><span>max</span></li>
      <li><a href="#min"        >minimum</a><span>min</span></li>
      <li><a href="#random"     >random</a></li>
      <li><a href="#sum"        >sum</a></li>
    </ul>

    <a href="#constructor-properties">Properties</a>
    <ul>
      <li><a href="#round-up"        >ROUND_UP</a></li>
      <li><a href="#round-down"      >ROUND_DOWN</a></li>
      <li><a href="#round-ceil"      >ROUND_CEIL</a></li>
      <li><a href="#round-floor"     >ROUND_FLOOR</a></li>
      <li><a href="#round-half-up"   >ROUND_HALF_UP</a></li>
      <li><a href="#round-half-down" >ROUND_HALF_DOWN</a></li>
      <li><a href="#round-half-even" >ROUND_HALF_EVEN</a></li>
      <li><a href="#round-half-ceil" >ROUND_HALF_CEIL</a></li>
      <li><a href="#round-half-floor">ROUND_HALF_FLOOR</a></li>
      <li><a href="#debug"           >DEBUG</a></li>
    </ul>

    <b> INSTANCE </b>

    <a href="#prototype-methods">Methods</a>
    <ul>
      <li><a href="#abs"    >absoluteValue         </a><span>abs</span>  </li>
      <li><a href="#cmp"    >comparedTo            </a>                  </li>
      <li><a href="#dp"     >decimalPlaces         </a><span>dp</span>   </li>
      <li><a href="#div"    >dividedBy             </a><span>div</span>  </li>
      <li><a href="#divInt" >dividedToIntegerBy    </a><span>idiv</span> </li>
      <li><a href="#pow"    >exponentiatedBy       </a><span>pow</span>  </li>
      <li><a href="#int"    >integerValue          </a>                  </li>
      <li><a href="#eq"     >isEqualTo             </a><span>eq</span>   </li>
      <li><a href="#isF"    >isFinite              </a>                  </li>
      <li><a href="#gt"     >isGreaterThan         </a><span>gt</span>   </li>
      <li><a href="#gte"    >isGreaterThanOrEqualTo</a><span>gte</span>  </li>
      <li><a href="#isInt"  >isInteger             </a>                  </li>
      <li><a href="#lt"     >isLessThan            </a><span>lt</span>   </li>
      <li><a href="#lte"    >isLessThanOrEqualTo   </a><span>lte</span>  </li>
      <li><a href="#isNaN"  >isNaN                 </a>                  </li>
      <li><a href="#isNeg"  >isNegative            </a>                  </li>
      <li><a href="#isPos"  >isPositive            </a>                  </li>
      <li><a href="#isZ"    >isZero                </a>                  </li>
      <li><a href="#minus"  >minus                 </a>                  </li>
      <li><a href="#mod"    >modulo                </a><span>mod</span>  </li>
      <li><a href="#times"  >multipliedBy          </a><span>times</span></li>
      <li><a href="#neg"    >negated               </a>                  </li>
      <li><a href="#plus"   >plus                  </a>                  </li>
      <li><a href="#sd"     >precision             </a><span>sd</span>   </li>
      <li><a href="#shift"  >shiftedBy             </a>                  </li>
      <li><a href="#sqrt"   >squareRoot            </a><span>sqrt</span> </li>
      <li><a href="#toE"    >toExponential         </a>                  </li>
      <li><a href="#toFix"  >toFixed               </a>                  </li>
      <li><a href="#toFor"  >toFormat              </a>                  </li>
      <li><a href="#toFr"   >toFraction            </a>                  </li>
      <li><a href="#toJSON" >toJSON                </a>                  </li>
      <li><a href="#toN"    >toNumber              </a>                  </li>
      <li><a href="#toP"    >toPrecision           </a>                  </li>
      <li><a href="#toS"    >toString              </a>                  </li>
      <li><a href="#valueOf">valueOf               </a>                  </li>
    </ul>

    <a href="#instance-properties">Properties</a>
    <ul>
      <li><a href="#coefficient">c: coefficient</a></li>
      <li><a href="#exponent"   >e: exponent</a></li>
      <li><a href="#sign"       >s: sign</a></li>
    </ul>

    <a href="#zero-nan-infinity">Zero, NaN &amp; Infinity</a>
    <a href="#Errors">Errors</a>
    <a href="#type-coercion">Type coercion</a>
    <a class='end' href="#faq">FAQ</a>

  </div>

  <div class="container">

    <h1>bignumber<span id='js'>.js</span></h1>

    <p>A JavaScript library for arbitrary-precision arithmetic.</p>
    <p><a href="https://github.com/MikeMcl/bignumber.js">Hosted on GitHub</a>. </p>

    <h2>API</h2>

    <p>
      See the <a href='https://github.com/MikeMcl/bignumber.js'>README</a> on GitHub for a
      quick-start introduction.
    </p>
    <p>
      In all examples below, <code>var</code> and semicolons are not shown, and if a commented-out
      value is in quotes it means <code>toString</code> has been called on the preceding expression.
    </p>


    <h3>CONSTRUCTOR</h3>


    <h5 id="bignumber">
      BigNumber<code class='inset'>BigNumber(n [, base]) <i>&rArr; BigNumber</i></code>
    </h5>
    <p>
      <code>n</code>: <i>number|string|BigNumber</i><br />
      <code>base</code>: <i>number</i>: integer, <code>2</code> to <code>36</code> inclusive. (See
      <a href='#alphabet'><code>ALPHABET</code></a> to extend this range).
    </p>
    <p>
      Returns a new instance of a BigNumber object with value <code>n</code>, where <code>n</code>
      is a numeric value in the specified <code>base</code>, or base <code>10</code> if
      <code>base</code> is omitted or is <code>null</code> or <code>undefined</code>.
    </p>
    <pre>
x = new BigNumber(123.4567)                // '123.4567'
// 'new' is optional
y = BigNumber(x)                           // '123.4567'</pre>
    <p>
      If <code>n</code> is a base <code>10</code> value it can be in normal (fixed-point) or
      exponential notation. Values in other bases must be in normal notation. Values in any base can
      have fraction digits, i.e. digits after the decimal point.
    </p>
    <pre>
new BigNumber(43210)                       // '43210'
new BigNumber('4.321e+4')                  // '43210'
new BigNumber('-735.0918e-430')            // '-7.350918e-428'
new BigNumber('123412421.234324', 5)       // '607236.557696'</pre>
    <p>
      Signed <code>0</code>, signed <code>Infinity</code> and <code>NaN</code> are supported.
    </p>
    <pre>
new BigNumber('-Infinity')                 // '-Infinity'
new BigNumber(NaN)                         // 'NaN'
new BigNumber(-0)                          // '0'
new BigNumber('.5')                        // '0.5'
new BigNumber('+2')                        // '2'</pre>
    <p>
      String values in hexadecimal literal form, e.g. <code>'0xff'</code>, are valid, as are
      string values with the octal and binary prefixs <code>'0o'</code> and <code>'0b'</code>.
      String values in octal literal form without the prefix will be interpreted as
      decimals, e.g. <code>'011'</code> is interpreted as 11, not 9.
    </p>
    <pre>
new BigNumber(-10110100.1, 2)              // '-180.5'
new BigNumber('-0b10110100.1')             // '-180.5'
new BigNumber('ff.8', 16)                  // '255.5'
new BigNumber('0xff.8')                    // '255.5'</pre>
    <p>
      If a base is specified, <code>n</code> is rounded according to the current
      <a href='#decimal-places'><code>DECIMAL_PLACES</code></a> and
      <a href='#rounding-mode'><code>ROUNDING_MODE</code></a> settings. <em>This includes base
      <code>10</code> so don't include a <code>base</code> parameter for decimal values unless
      this behaviour is wanted.</em>
    </p>
    <pre>BigNumber.config({ DECIMAL_PLACES: 5 })
new BigNumber(1.23456789)                  // '1.23456789'
new BigNumber(1.23456789, 10)              // '1.23457'</pre>
    <p>An error is thrown if <code>base</code> is invalid. See <a href='#Errors'>Errors</a>.</p>
    <p>
      There is no limit to the number of digits of a value of type <em>string</em> (other than
      that of JavaScript's maximum array size). See <a href='#range'><code>RANGE</code></a> to set
      the maximum and minimum possible exponent value of a BigNumber.
    </p>
    <pre>
new BigNumber('5032485723458348569331745.33434346346912144534543')
new BigNumber('4.321e10000000')</pre>
    <p>BigNumber <code>NaN</code> is returned if <code>n</code> is invalid
    (unless <code>BigNumber.DEBUG</code> is <code>true</code>, see below).</p>
    <pre>
new BigNumber('.1*')                       // 'NaN'
new BigNumber('blurgh')                    // 'NaN'
new BigNumber(9, 2)                        // 'NaN'</pre>
    <p>
      To aid in debugging, if <code>BigNumber.DEBUG</code> is <code>true</code> then an error will
      be thrown on an invalid <code>n</code>. An error will also be thrown if <code>n</code> is of
      type <em>number</em> with more than <code>15</code> significant digits, as calling
      <code><a href='#toS'>toString</a></code> or <code><a href='#valueOf'>valueOf</a></code> on
      these numbers may not result in the intended value.
    </p>
      <pre>
console.log(823456789123456.3)            //  823456789123456.2
new BigNumber(823456789123456.3)          // '823456789123456.2'
BigNumber.DEBUG = true
// '[BigNumber Error] Number primitive has more than 15 significant digits'
new BigNumber(823456789123456.3)
// '[BigNumber Error] Not a base 2 number'
new BigNumber(9, 2)</pre>
    <p>
      A BigNumber can also be created from an object literal.
      Use <code><a href='#isBigNumber'>isBigNumber</a></code> to check that it is well-formed.
    </p>
    <pre>new BigNumber({ s: 1, e: 2, c: [ 777, 12300000000000 ], _isBigNumber: true })    // '777.123'</pre>




    <h4 id="methods">Methods</h4>
     <p>The static methods of a BigNumber constructor.</p>




    <h5 id="clone">clone
      <code class='inset'>.clone([object]) <i>&rArr; BigNumber constructor</i></code>
    </h5>
    <p><code>object</code>: <i>object</i></p>
    <p>
      Returns a new independent BigNumber constructor with configuration as described by
      <code>object</code> (see <a href='#config'><code>config</code></a>), or with the default
      configuration if <code>object</code> is <code>null</code> or <code>undefined</code>.
    </p>
    <p>
      Throws if <code>object</code> is not an object. See <a href='#Errors'>Errors</a>.
    </p>
    <pre>BigNumber.config({ DECIMAL_PLACES: 5 })
BN = BigNumber.clone({ DECIMAL_PLACES: 9 })

x = new BigNumber(1)
y = new BN(1)

x.div(3)                        // 0.33333
y.div(3)                        // 0.333333333

// BN = BigNumber.clone({ DECIMAL_PLACES: 9 }) is equivalent to:
BN = BigNumber.clone()
BN.config({ DECIMAL_PLACES: 9 })</pre>



    <h5 id="config">config<code class='inset'>set([object]) <i>&rArr; object</i></code></h5>
    <p>
      <code>object</code>: <i>object</i>: an object that contains some or all of the following
      properties.
    </p>
    <p>Configures the settings for this particular BigNumber constructor.</p>

    <dl class='inset'>
      <dt id="decimal-places"><code><b>DECIMAL_PLACES</b></code></dt>
      <dd>
        <i>number</i>: integer, <code>0</code> to <code>1e+9</code> inclusive<br />
        Default value: <code>20</code>
      </dd>
      <dd>
        The <u>maximum</u> number of decimal places of the results of operations involving
        division, i.e. division, square root and base conversion operations, and power
        operations with negative exponents.<br />
      </dd>
      <dd>
      <pre>BigNumber.config({ DECIMAL_PLACES: 5 })
BigNumber.set({ DECIMAL_PLACES: 5 })    // equivalent</pre>
      </dd>



      <dt id="rounding-mode"><code><b>ROUNDING_MODE</b></code></dt>
      <dd>
        <i>number</i>: integer, <code>0</code> to <code>8</code> inclusive<br />
        Default value: <code>4</code> <a href="#round-half-up">(<code>ROUND_HALF_UP</code>)</a>
      </dd>
      <dd>
        The rounding mode used in the above operations and the default rounding mode of
        <a href='#dp'><code>decimalPlaces</code></a>,
        <a href='#sd'><code>precision</code></a>,
        <a href='#toE'><code>toExponential</code></a>,
        <a href='#toFix'><code>toFixed</code></a>,
        <a href='#toFor'><code>toFormat</code></a> and
        <a href='#toP'><code>toPrecision</code></a>.
      </dd>
      <dd>The modes are available as enumerated properties of the BigNumber constructor.</dd>
       <dd>
      <pre>BigNumber.config({ ROUNDING_MODE: 0 })
BigNumber.set({ ROUNDING_MODE: BigNumber.ROUND_UP })    // equivalent</pre>
        </dd>



      <dt id="exponential-at"><code><b>EXPONENTIAL_AT</b></code></dt>
      <dd>
        <i>number</i>: integer, magnitude <code>0</code> to <code>1e+9</code> inclusive, or
        <br />
        <i>number</i>[]: [ integer <code>-1e+9</code> to <code>0</code> inclusive, integer
        <code>0</code> to <code>1e+9</code> inclusive ]<br />
        Default value: <code>[-7, 20]</code>
      </dd>
      <dd>
        The exponent value(s) at which <code>toString</code> returns exponential notation.
      </dd>
      <dd>
        If a single number is assigned, the value is the exponent magnitude.<br />
        If an array of two numbers is assigned then the first number is the negative exponent
        value at and beneath which exponential notation is used, and the second number is the
        positive exponent value at and above which the same.
      </dd>
      <dd>
        For example, to emulate JavaScript numbers in terms of the exponent values at which they
        begin to use exponential notation, use <code>[-7, 20]</code>.
      </dd>
      <dd>
      <pre>BigNumber.config({ EXPONENTIAL_AT: 2 })
new BigNumber(12.3)         // '12.3'        e is only 1
new BigNumber(123)          // '1.23e+2'
new BigNumber(0.123)        // '0.123'       e is only -1
new BigNumber(0.0123)       // '1.23e-2'

BigNumber.config({ EXPONENTIAL_AT: [-7, 20] })
new BigNumber(123456789)    // '123456789'   e is only 8
new BigNumber(0.000000123)  // '1.23e-7'

// Almost never return exponential notation:
BigNumber.config({ EXPONENTIAL_AT: 1e+9 })

// Always return exponential notation:
BigNumber.config({ EXPONENTIAL_AT: 0 })</pre>
      </dd>
      <dd>
        Regardless of the value of <code>EXPONENTIAL_AT</code>, the <code>toFixed</code> method
        will always return a value in normal notation and the <code>toExponential</code> method
        will always return a value in exponential form.
      </dd>
      <dd>
        Calling <code>toString</code> with a base argument, e.g. <code>toString(10)</code>, will
        also always return normal notation.
      </dd>



      <dt id="range"><code><b>RANGE</b></code></dt>
      <dd>
        <i>number</i>: integer, magnitude <code>1</code> to <code>1e+9</code> inclusive, or
        <br />
        <i>number</i>[]: [ integer <code>-1e+9</code> to <code>-1</code> inclusive, integer
        <code>1</code> to <code>1e+9</code> inclusive ]<br />
        Default value: <code>[-1e+9, 1e+9]</code>
      </dd>
      <dd>
        The exponent value(s) beyond which overflow to <code>Infinity</code> and underflow to
        zero occurs.
      </dd>
      <dd>
        If a single number is assigned, it is the maximum exponent magnitude: values wth a
        positive exponent of greater magnitude become <code>Infinity</code> and those with a
        negative exponent of greater magnitude become zero.
      <dd>
        If an array of two numbers is assigned then the first number is the negative exponent
        limit and the second number is the positive exponent limit.
      </dd>
      <dd>
        For example, to emulate JavaScript numbers in terms of the exponent values at which they
        become zero and <code>Infinity</code>, use <code>[-324, 308]</code>.
      </dd>
      <dd>
      <pre>BigNumber.config({ RANGE: 500 })
BigNumber.config().RANGE     // [ -500, 500 ]
new BigNumber('9.999e499')   // '9.999e+499'
new BigNumber('1e500')       // 'Infinity'
new BigNumber('1e-499')      // '1e-499'
new BigNumber('1e-500')      // '0'

BigNumber.config({ RANGE: [-3, 4] })
new BigNumber(99999)         // '99999'      e is only 4
new BigNumber(100000)        // 'Infinity'   e is 5
new BigNumber(0.001)         // '0.01'       e is only -3
new BigNumber(0.0001)        // '0'          e is -4</pre>
      </dd>
      <dd>
        The largest possible magnitude of a finite BigNumber is
        <code>9.999...e+1000000000</code>.<br />
        The smallest possible magnitude of a non-zero BigNumber is <code>1e-1000000000</code>.
      </dd>



      <dt id="crypto"><code><b>CRYPTO</b></code></dt>
      <dd>
        <i>boolean</i>: <code>true</code> or <code>false</code>.<br />
        Default value: <code>false</code>
      </dd>
      <dd>
        The value that determines whether cryptographically-secure pseudo-random number
        generation is used.
      </dd>
      <dd>
        If <code>CRYPTO</code> is set to <code>true</code> then the
        <a href='#random'><code>random</code></a> method will generate random digits using
        <code>crypto.getRandomValues</code> in browsers that support it, or
        <code>crypto.randomBytes</code> if using Node.js.
      </dd>
      <dd>
        If neither function is supported by the host environment then attempting to set
        <code>CRYPTO</code> to <code>true</code> will fail and an exception will be thrown.
      </dd>
      <dd>
        If <code>CRYPTO</code> is <code>false</code> then the source of randomness used will be
        <code>Math.random</code> (which is assumed to generate at least <code>30</code> bits of
        randomness).
      </dd>
      <dd>See <a href='#random'><code>random</code></a>.</dd>
      <dd>
      <pre>
// Node.js
global.crypto = require('crypto')

BigNumber.config({ CRYPTO: true })
BigNumber.config().CRYPTO       // true
BigNumber.random()              // 0.54340758610486147524</pre>
      </dd>



      <dt id="modulo-mode"><code><b>MODULO_MODE</b></code></dt>
      <dd>
        <i>number</i>: integer, <code>0</code> to <code>9</code> inclusive<br />
        Default value: <code>1</code> (<a href="#round-down"><code>ROUND_DOWN</code></a>)
      </dd>
      <dd>The modulo mode used when calculating the modulus: <code>a mod n</code>.</dd>
      <dd>
        The quotient, <code>q = a / n</code>, is calculated according to the
        <a href='#rounding-mode'><code>ROUNDING_MODE</code></a> that corresponds to the chosen
        <code>MODULO_MODE</code>.
      </dd>
      <dd>The remainder, <code>r</code>, is calculated as: <code>r = a - n * q</code>.</dd>
      <dd>
        The modes that are most commonly used for the modulus/remainder operation are shown in
        the following table. Although the other rounding modes can be used, they may not give
        useful results.
      </dd>
      <dd>
        <table>
          <tr><th>Property</th><th>Value</th><th>Description</th></tr>
          <tr>
            <td><b>ROUND_UP</b></td><td class='centre'>0</td>
            <td>
              The remainder is positive if the dividend is negative, otherwise it is negative.
            </td>
          </tr>
          <tr>
            <td><b>ROUND_DOWN</b></td><td class='centre'>1</td>
            <td>
              The remainder has the same sign as the dividend.<br />
              This uses 'truncating division' and matches the behaviour of JavaScript's
              remainder operator <code>%</code>.
            </td>
          </tr>
          <tr>
            <td><b>ROUND_FLOOR</b></td><td class='centre'>3</td>
            <td>
              The remainder has the same sign as the divisor.<br />
              This matches Python's <code>%</code> operator.
            </td>
          </tr>
          <tr>
            <td><b>ROUND_HALF_EVEN</b></td><td class='centre'>6</td>
            <td>The <i>IEEE 754</i> remainder function.</td>
          </tr>
           <tr>
             <td><b>EUCLID</b></td><td class='centre'>9</td>
             <td>
               The remainder is always positive. Euclidian division: <br />
               <code>q = sign(n) * floor(a / abs(n))</code>
             </td>
           </tr>
        </table>
      </dd>
      <dd>
        The rounding/modulo modes are available as enumerated properties of the BigNumber
        constructor.
      </dd>
      <dd>See <a href='#mod'><code>modulo</code></a>.</dd>
      <dd>
        <pre>BigNumber.config({ MODULO_MODE: BigNumber.EUCLID })
BigNumber.config({ MODULO_MODE: 9 })          // equivalent</pre>
      </dd>



      <dt id="pow-precision"><code><b>POW_PRECISION</b></code></dt>
      <dd>
        <i>number</i>: integer, <code>0</code> to <code>1e+9</code> inclusive.<br />
        Default value: <code>0</code>
      </dd>
      <dd>
        The <i>maximum</i> precision, i.e. number of significant digits, of the result of the power
        operation (unless a modulus is specified).
      </dd>
      <dd>If set to <code>0</code>, the number of significant digits will not be limited.</dd>
      <dd>See <a href='#pow'><code>exponentiatedBy</code></a>.</dd>
      <dd><pre>BigNumber.config({ POW_PRECISION: 100 })</pre></dd>



      <dt id="format"><code><b>FORMAT</b></code></dt>
      <dd><i>object</i></dd>
      <dd>
        The <code>FORMAT</code> object configures the format of the string returned by the
        <a href='#toFor'><code>toFormat</code></a> method.
      </dd>
      <dd>
        The example below shows the properties of the <code>FORMAT</code> object that are
        recognised, and their default values.
      </dd>
      <dd>
         Unlike the other configuration properties, the values of the properties of the
         <code>FORMAT</code> object will not be checked for validity. The existing
         <code>FORMAT</code> object will simply be replaced by the object that is passed in.
         The object can include any number of the properties shown below.
      </dd>
      <dd>See <a href='#toFor'><code>toFormat</code></a> for examples of usage.</dd>
      <dd>
      <pre>
BigNumber.config({
  FORMAT: {
    // string to prepend
    prefix: '',
    // decimal separator
    decimalSeparator: '.',
    // grouping separator of the integer part
    groupSeparator: ',',
    // primary grouping size of the integer part
    groupSize: 3,
    // secondary grouping size of the integer part
    secondaryGroupSize: 0,
    // grouping separator of the fraction part
    fractionGroupSeparator: ' ',
    // grouping size of the fraction part
    fractionGroupSize: 0,
    // string to append
    suffix: ''
  }
});</pre>
      </dd>



      <dt id="alphabet"><code><b>ALPHABET</b></code></dt>
      <dd>
        <i>string</i><br />
        Default value: <code>'0123456789abcdefghijklmnopqrstuvwxyz'</code>
      </dd>
      <dd>
        The alphabet used for base conversion. The length of the alphabet corresponds to the
        maximum value of the base argument that can be passed to the
        <a href='#bignumber'><code>BigNumber</code></a> constructor or
        <a href='#toS'><code>toString</code></a>.
      </dd>
      <dd>
        There is no maximum length for the alphabet, but it must be at least 2 characters long, and
        it must not contain whitespace or a repeated character, or the sign indicators
        <code>'+'</code> and <code>'-'</code>, or the decimal separator <code>'.'</code>.
      </dd>
      <dd>
        <pre>// duodecimal (base 12)
BigNumber.config({ ALPHABET: '0123456789TE' })
x = new BigNumber('T', 12)
x.toString()                // '10'
x.toString(12)              // 'T'</pre>
      </dd>



    </dl>
    <br /><br />
    <p>Returns an object with the above properties and their current values.</p>
    <p>
      Throws if <code>object</code> is not an object, or if an invalid value is assigned to
      one or more of the above properties. See <a href='#Errors'>Errors</a>.
    </p>
    <pre>
BigNumber.config({
  DECIMAL_PLACES: 40,
  ROUNDING_MODE: BigNumber.ROUND_HALF_CEIL,
  EXPONENTIAL_AT: [-10, 20],
  RANGE: [-500, 500],
  CRYPTO: true,
  MODULO_MODE: BigNumber.ROUND_FLOOR,
  POW_PRECISION: 80,
  FORMAT: {
    groupSize: 3,
    groupSeparator: ' ',
    decimalSeparator: ','
  },
  ALPHABET: '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_'
});

obj = BigNumber.config();
obj.DECIMAL_PLACES        // 40
obj.RANGE                 // [-500, 500]</pre>



    <h5 id="isBigNumber">
      isBigNumber<code class='inset'>.isBigNumber(value) <i>&rArr; boolean</i></code>
    </h5>
    <p><code>value</code>: <i>any</i><br /></p>
    <p>
      Returns <code>true</code> if <code>value</code> is a BigNumber instance, otherwise returns
      <code>false</code>.
    </p>
    <pre>x = 42
y = new BigNumber(x)

BigNumber.isBigNumber(x)             // false
y instanceof BigNumber               // true
BigNumber.isBigNumber(y)             // true

BN = BigNumber.clone();
z = new BN(x)
z instanceof BigNumber               // false
BigNumber.isBigNumber(z)             // true</pre>
    <p>
      If <code>value</code> is a BigNumber instance and <code>BigNumber.DEBUG</code> is <code>true</code>,
      then this method will also check if <code>value</code> is well-formed, and throw if it is not.
      See <a href='#Errors'>Errors</a>.
    </p>
    <p>
      The check can be useful if creating a BigNumber from an object literal.
      See <a href='#bignumber'>BigNumber</a>.
    </p>
    <pre>
x = new BigNumber(10)

// Change x.c to an illegitimate value.
x.c = NaN

BigNumber.DEBUG = false

// No error.
BigNumber.isBigNumber(x)    // true

BigNumber.DEBUG = true

// Error.
BigNumber.isBigNumber(x)    // '[BigNumber Error] Invalid BigNumber'</pre>



    <h5 id="max">maximum<code class='inset'>.max(n...) <i>&rArr; BigNumber</i></code></h5>
    <p>
      <code>n</code>: <i>number|string|BigNumber</i><br />
      <i>See <code><a href="#bignumber">BigNumber</a></code> for further parameter details.</i>
    </p>
    <p>
      Returns a BigNumber whose value is the maximum of the arguments.
    </p>
    <p>The return value is always exact and unrounded.</p>
    <pre>x = new BigNumber('3257869345.0378653')
BigNumber.maximum(4e9, x, '123456789.9')      // '4000000000'

arr = [12, '13', new BigNumber(14)]
BigNumber.max.apply(null, arr)                // '14'</pre>



    <h5 id="min">minimum<code class='inset'>.min(n...) <i>&rArr; BigNumber</i></code></h5>
    <p>
      <code>n</code>: <i>number|string|BigNumber</i><br />
      <i>See <code><a href="#bignumber">BigNumber</a></code> for further parameter details.</i>
    </p>
    <p>
      Returns a BigNumber whose value is the minimum of the arguments.
    </p>
    <p>The return value is always exact and unrounded.</p>
    <pre>x = new BigNumber('3257869345.0378653')
BigNumber.minimum(4e9, x, '123456789.9')      // '123456789.9'

arr = [2, new BigNumber(-14), '-15.9999', -12]
BigNumber.min.apply(null, arr)                // '-15.9999'</pre>



    <h5 id="random">
      random<code class='inset'>.random([dp]) <i>&rArr; BigNumber</i></code>
    </h5>
    <p><code>dp</code>: <i>number</i>: integer, <code>0</code> to <code>1e+9</code> inclusive</p>
    <p>
      Returns a new BigNumber with a pseudo-random value equal to or greater than <code>0</code> and
      less than <code>1</code>.
    </p>
    <p>
      The return value will have <code>dp</code> decimal places (or less if trailing zeros are
      produced).<br />
      If <code>dp</code> is omitted then the number of decimal places will default to the current
      <a href='#decimal-places'><code>DECIMAL_PLACES</code></a> setting.
    </p>
    <p>
      Depending on the value of this BigNumber constructor's
      <a href='#crypto'><code>CRYPTO</code></a> setting and the support for the
      <code>crypto</code> object in the host environment, the random digits of the return value are
      generated by either <code>Math.random</code> (fastest), <code>crypto.getRandomValues</code>
      (Web Cryptography API in recent browsers) or <code>crypto.randomBytes</code> (Node.js).
    </p>
    <p>
      To be able to set <a href='#crypto'><code>CRYPTO</code></a> to <code>true</code> when using
      Node.js, the <code>crypto</code> object must be available globally:
    </p>
    <pre>global.crypto = require('crypto')</pre>
    <p>
      If <a href='#crypto'><code>CRYPTO</code></a> is <code>true</code>, i.e. one of the
      <code>crypto</code> methods is to be used, the value of a returned BigNumber should be
      cryptographically-secure and statistically indistinguishable from a random value.
    </p>
    <p>
      Throws if <code>dp</code> is invalid. See <a href='#Errors'>Errors</a>.
    </p>
    <pre>BigNumber.config({ DECIMAL_PLACES: 10 })
BigNumber.random()              // '0.4117936847'
BigNumber.random(20)            // '0.78193327636914089009'</pre>



    <h5 id="sum">sum<code class='inset'>.sum(n...) <i>&rArr; BigNumber</i></code></h5>
    <p>
      <code>n</code>: <i>number|string|BigNumber</i><br />
      <i>See <code><a href="#bignumber">BigNumber</a></code> for further parameter details.</i>
    </p>
    <p>Returns a BigNumber whose value is the sum of the arguments.</p>
    <p>The return value is always exact and unrounded.</p>
    <pre>x = new BigNumber('3257869345.0378653')
BigNumber.sum(4e9, x, '123456789.9')      // '7381326134.9378653'

arr = [2, new BigNumber(14), '15.9999', 12]
BigNumber.sum.apply(null, arr)            // '43.9999'</pre>



    <h4 id="constructor-properties">Properties</h4>
    <p>
      The library's enumerated rounding modes are stored as properties of the constructor.<br />
      (They are not referenced internally by the library itself.)
    </p>
    <p>
      Rounding modes <code>0</code> to <code>6</code> (inclusive) are the same as those of Java's
      BigDecimal class.
    </p>
    <table>
      <tr>
        <th>Property</th>
        <th>Value</th>
        <th>Description</th>
      </tr>
      <tr>
        <td id="round-up"><b>ROUND_UP</b></td>
        <td class='centre'>0</td>
        <td>Rounds away from zero</td>
      </tr>
      <tr>
        <td id="round-down"><b>ROUND_DOWN</b></td>
        <td class='centre'>1</td>
        <td>Rounds towards zero</td>
      </tr>
      <tr>
        <td id="round-ceil"><b>ROUND_CEIL</b></td>
        <td class='centre'>2</td>
        <td>Rounds towards <code>Infinity</code></td>
      </tr>
      <tr>
        <td id="round-floor"><b>ROUND_FLOOR</b></td>
        <td class='centre'>3</td>
        <td>Rounds towards <code>-Infinity</code></td>
      </tr>
      <tr>
        <td id="round-half-up"><b>ROUND_HALF_UP</b></td>
        <td class='centre'>4</td>
        <td>
          Rounds towards nearest neighbour.<br />
          If equidistant, rounds away from zero
        </td>
      </tr>
      <tr>
        <td id="round-half-down"><b>ROUND_HALF_DOWN</b></td>
        <td class='centre'>5</td>
        <td>
          Rounds towards nearest neighbour.<br />
          If equidistant, rounds towards zero
        </td>
      </tr>
      <tr>
        <td id="round-half-even"><b>ROUND_HALF_EVEN</b></td>
        <td class='centre'>6</td>
        <td>
          Rounds towards nearest neighbour.<br />
          If equidistant, rounds towards even neighbour
        </td>
      </tr>
      <tr>
        <td id="round-half-ceil"><b>ROUND_HALF_CEIL</b></td>
        <td class='centre'>7</td>
        <td>
          Rounds towards nearest neighbour.<br />
          If equidistant, rounds towards <code>Infinity</code>
        </td>
      </tr>
      <tr>
        <td id="round-half-floor"><b>ROUND_HALF_FLOOR</b></td>
        <td class='centre'>8</td>
        <td>
          Rounds towards nearest neighbour.<br />
          If equidistant, rounds towards <code>-Infinity</code>
        </td>
      </tr>
    </table>
    <pre>
BigNumber.config({ ROUNDING_MODE: BigNumber.ROUND_CEIL })
BigNumber.config({ ROUNDING_MODE: 2 })     // equivalent</pre>

    <h5 id="debug">DEBUG</h5>
    <p><i>undefined|false|true</i></p>
    <p>
      If <code>BigNumber.DEBUG</code> is set <code>true</code> then an error will be thrown
      if this <a href='#bignumber'>BigNumber</a> constructor receives an invalid value, such as
      a value of type <em>number</em> with more than <code>15</code> significant digits.
      See <a href='#bignumber'>BigNumber</a>.
    </p>
    <p>
      An error will also be thrown if the <code><a href='#isBigNumber'>isBigNumber</a></code>
      method receives a BigNumber that is not well-formed.
      See <code><a href='#isBigNumber'>isBigNumber</a></code>.
    </p>
    <pre>BigNumber.DEBUG = true</pre>


    <h3>INSTANCE</h3>


    <h4 id="prototype-methods">Methods</h4>
    <p>The methods inherited by a BigNumber instance from its constructor's prototype object.</p>
    <p>A BigNumber is immutable in the sense that it is not changed by its methods. </p>
    <p>
      The treatment of &plusmn;<code>0</code>, &plusmn;<code>Infinity</code> and <code>NaN</code> is
      consistent with how JavaScript treats these values.
    </p>
    <p>Many method names have a shorter alias.</p>



    <h5 id="abs">absoluteValue<code class='inset'>.abs() <i>&rArr; BigNumber</i></code></h5>
    <p>
      Returns a BigNumber whose value is the absolute value, i.e. the magnitude, of the value of
      this BigNumber.
    </p>
    <p>The return value is always exact and unrounded.</p>
    <pre>
x = new BigNumber(-0.8)
y = x.absoluteValue()           // '0.8'
z = y.abs()                     // '0.8'</pre>



    <h5 id="cmp">
      comparedTo<code class='inset'>.comparedTo(n [, base]) <i>&rArr; number</i></code>
    </h5>
    <p>
      <code>n</code>: <i>number|string|BigNumber</i><br />
      <code>base</code>: <i>number</i><br />
      <i>See <a href="#bignumber">BigNumber</a> for further parameter details.</i>
    </p>
    <table>
      <tr><th>Returns</th><th>&nbsp;</th></tr>
      <tr>
        <td class='centre'><code>1</code></td>
        <td>If the value of this BigNumber is greater than the value of <code>n</code></td>
      </tr>
      <tr>
        <td class='centre'><code>-1</code></td>
        <td>If the value of this BigNumber is less than the value of <code>n</code></td>
      </tr>
      <tr>
        <td class='centre'><code>0</code></td>
        <td>If this BigNumber and <code>n</code> have the same value</td>
      </tr>
       <tr>
        <td class='centre'><code>null</code></td>
        <td>If the value of either this BigNumber or <code>n</code> is <code>NaN</code></td>
      </tr>
    </table>
    <pre>
x = new BigNumber(Infinity)
y = new BigNumber(5)
x.comparedTo(y)                 // 1
x.comparedTo(x.minus(1))        // 0
y.comparedTo(NaN)               // null
y.comparedTo('110', 2)          // -1</pre>



    <h5 id="dp">
      decimalPlaces<code class='inset'>.dp([dp [, rm]]) <i>&rArr; BigNumber|number</i></code>
    </h5>
    <p>
      <code>dp</code>: <i>number</i>: integer, <code>0</code> to <code>1e+9</code> inclusive<br />
      <code>rm</code>: <i>number</i>: integer, <code>0</code> to <code>8</code> inclusive
    </p>
    <p>
      If <code>dp</code> is a number, returns a BigNumber whose value is the value of this BigNumber
      rounded by rounding mode <code>rm</code> to a maximum of <code>dp</code> decimal places.
    </p>
    <p>
      If <code>dp</code> is omitted, or is <code>null</code> or <code>undefined</code>, the return
      value is the number of decimal places of the value of this BigNumber, or <code>null</code> if
      the value of this BigNumber is &plusmn;<code>Infinity</code> or <code>NaN</code>.
    </p>
    <p>
      If <code>rm</code> is omitted, or is <code>null</code> or <code>undefined</code>,
      <a href='#rounding-mode'><code>ROUNDING_MODE</code></a> is used.
    </p>
    <p>
      Throws if <code>dp</code> or <code>rm</code> is invalid. See <a href='#Errors'>Errors</a>.
    </p>
    <pre>
x = new BigNumber(1234.56)
x.decimalPlaces(1)                     // '1234.6'
x.dp()                                 // 2
x.decimalPlaces(2)                     // '1234.56'
x.dp(10)                               // '1234.56'
x.decimalPlaces(0, 1)                  // '1234'
x.dp(0, 6)                             // '1235'
x.decimalPlaces(1, 1)                  // '1234.5'
x.dp(1, BigNumber.ROUND_HALF_EVEN)     // '1234.6'
x                                      // '1234.56'
y = new BigNumber('9.9e-101')
y.dp()                                 // 102</pre>



    <h5 id="div">dividedBy<code class='inset'>.div(n [, base]) <i>&rArr; BigNumber</i></code>
    </h5>
    <p>
      <code>n</code>: <i>number|string|BigNumber</i><br />
      <code>base</code>: <i>number</i><br />
      <i>See <a href="#bignumber">BigNumber</a> for further parameter details.</i>
    </p>
    <p>
      Returns a BigNumber whose value is the value of this BigNumber divided by
      <code>n</code>, rounded according to the current
      <a href='#decimal-places'><code>DECIMAL_PLACES</code></a> and
      <a href='#rounding-mode'><code>ROUNDING_MODE</code></a> settings.
    </p>
    <pre>
x = new BigNumber(355)
y = new BigNumber(113)
x.dividedBy(y)                  // '3.14159292035398230088'
x.div(5)                        // '71'
x.div(47, 16)                   // '5'</pre>



    <h5 id="divInt">
      dividedToIntegerBy<code class='inset'>.idiv(n [, base]) &rArr;
      <i>BigNumber</i></code>
    </h5>
    <p>
      <code>n</code>: <i>number|string|BigNumber</i><br />
      <code>base</code>: <i>number</i><br />
      <i>See <a href="#bignumber">BigNumber</a> for further parameter details.</i>
    </p>
    <p>
      Returns a BigNumber whose value is the integer part of dividing the value of this BigNumber by
      <code>n</code>.
    </p>
    <pre>
x = new BigNumber(5)
y = new BigNumber(3)
x.dividedToIntegerBy(y)         // '1'
x.idiv(0.7)                     // '7'
x.idiv('0.f', 16)               // '5'</pre>



    <h5 id="pow">
      exponentiatedBy<code class='inset'>.pow(n [, m]) <i>&rArr; BigNumber</i></code>
    </h5>
    <p>
      <code>n</code>: <i>number|string|BigNumber</i>: integer<br />
      <code>m</code>: <i>number|string|BigNumber</i>
    </p>
    <p>
      Returns a BigNumber whose value is the value of this BigNumber exponentiated by
      <code>n</code>, i.e. raised to the power <code>n</code>, and optionally modulo a modulus
      <code>m</code>.
    </p>
    <p>
      Throws if <code>n</code> is not an integer. See <a href='#Errors'>Errors</a>.
    </p>
    <p>
      If <code>n</code> is negative the result is rounded according to the current
      <a href='#decimal-places'><code>DECIMAL_PLACES</code></a> and
      <a href='#rounding-mode'><code>ROUNDING_MODE</code></a> settings.
    </p>
    <p>
      As the number of digits of the result of the power operation can grow so large so quickly,
      e.g. 123.456<sup>10000</sup> has over <code>50000</code> digits, the number of significant
      digits calculated is limited to the value of the
      <a href='#pow-precision'><code>POW_PRECISION</code></a> setting (unless a modulus
      <code>m</code> is specified).
    </p>
    <p>
      By default <a href='#pow-precision'><code>POW_PRECISION</code></a> is set to <code>0</code>.
      This means that an unlimited number of significant digits will be calculated, and that the
      method's performance will decrease dramatically for larger exponents.
    </p>
    <p>
      If <code>m</code> is specified and the value of <code>m</code>, <code>n</code> and this
      BigNumber are integers, and <code>n</code> is positive, then a fast modular exponentiation
      algorithm is used, otherwise the operation will be performed as
      <code>x.exponentiatedBy(n).modulo(m)</code> with a
      <a href='#pow-precision'><code>POW_PRECISION</code></a> of <code>0</code>.
    </p>
    <pre>
Math.pow(0.7, 2)                // 0.48999999999999994
x = new BigNumber(0.7)
x.exponentiatedBy(2)            // '0.49'
BigNumber(3).pow(-2)            // '0.11111111111111111111'</pre>



    <h5 id="int">
      integerValue<code class='inset'>.integerValue([rm]) <i>&rArr; BigNumber</i></code>
    </h5>
    <p>
      <code>rm</code>: <i>number</i>: integer, <code>0</code> to <code>8</code> inclusive
    </p>
   <p>
      Returns a BigNumber whose value is the value of this BigNumber rounded to an integer using
      rounding mode <code>rm</code>.
    </p>
    <p>
      If <code>rm</code> is omitted, or is <code>null</code> or <code>undefined</code>,
      <a href='#rounding-mode'><code>ROUNDING_MODE</code></a> is used.
    </p>
    <p>
      Throws if <code>rm</code> is invalid. See <a href='#Errors'>Errors</a>.
    </p>
    <pre>
x = new BigNumber(123.456)
x.integerValue()                        // '123'
x.integerValue(BigNumber.ROUND_CEIL)    // '124'
y = new BigNumber(-12.7)
y.integerValue()                        // '-13'
y.integerValue(BigNumber.ROUND_DOWN)    // '-12'</pre>
    <p>
      The following is an example of how to add a prototype method that emulates JavaScript's
      <code>Math.round</code> function. <code>Math.ceil</code>, <code>Math.floor</code> and
      <code>Math.trunc</code> can be emulated in the same way with
      <code>BigNumber.ROUND_CEIL</code>, <code>BigNumber.ROUND_FLOOR</code> and
      <code> BigNumber.ROUND_DOWN</code> respectively.
    </p>
    <pre>
BigNumber.prototype.round = function (n) {
  return n.integerValue(BigNumber.ROUND_HALF_CEIL);
};
x.round()                               // '123'</pre>



    <h5 id="eq">isEqualTo<code class='inset'>.eq(n [, base]) <i>&rArr; boolean</i></code></h5>
    <p>
      <code>n</code>: <i>number|string|BigNumber</i><br />
      <code>base</code>: <i>number</i><br />
      <i>See <a href="#bignumber">BigNumber</a> for further parameter details.</i>
    </p>
    <p>
      Returns <code>true</code> if the value of this BigNumber is equal to the value of
      <code>n</code>, otherwise returns <code>false</code>.<br />
      As with JavaScript, <code>NaN</code> does not equal <code>NaN</code>.
    </p>
    <p>Note: This method uses the <a href='#cmp'><code>comparedTo</code></a> method internally.</p>
    <pre>
0 === 1e-324                    // true
x = new BigNumber(0)
x.isEqualTo('1e-324')           // false
BigNumber(-0).eq(x)             // true  ( -0 === 0 )
BigNumber(255).eq('ff', 16)     // true

y = new BigNumber(NaN)
y.isEqualTo(NaN)                // false</pre>



    <h5 id="isF">isFinite<code class='inset'>.isFinite() <i>&rArr; boolean</i></code></h5>
    <p>
      Returns <code>true</code> if the value of this BigNumber is a finite number, otherwise
      returns <code>false</code>.
    </p>
    <p>
      The only possible non-finite values of a BigNumber are <code>NaN</code>, <code>Infinity</code>
      and <code>-Infinity</code>.
    </p>
    <pre>
x = new BigNumber(1)
x.isFinite()                    // true
y = new BigNumber(Infinity)
y.isFinite()                    // false</pre>
    <p>
      Note: The native method <code>isFinite()</code> can be used if
      <code>n &lt;= Number.MAX_VALUE</code>.
    </p>



    <h5 id="gt">isGreaterThan<code class='inset'>.gt(n [, base]) <i>&rArr; boolean</i></code></h5>
    <p>
      <code>n</code>: <i>number|string|BigNumber</i><br />
      <code>base</code>: <i>number</i><br />
      <i>See <a href="#bignumber">BigNumber</a> for further parameter details.</i>
    </p>
    <p>
      Returns <code>true</code> if the value of this BigNumber is greater than the value of
      <code>n</code>, otherwise returns <code>false</code>.
    </p>
    <p>Note: This method uses the <a href='#cmp'><code>comparedTo</code></a> method internally.</p>
    <pre>
0.1 &gt; (0.3 - 0.2)                             // true
x = new BigNumber(0.1)
x.isGreaterThan(BigNumber(0.3).minus(0.2))    // false
BigNumber(0).gt(x)                            // false
BigNumber(11, 3).gt(11.1, 2)                  // true</pre>



    <h5 id="gte">
      isGreaterThanOrEqualTo<code class='inset'>.gte(n [, base]) <i>&rArr; boolean</i></code>
    </h5>
    <p>
      <code>n</code>: <i>number|string|BigNumber</i><br />
      <code>base</code>: <i>number</i><br />
      <i>See <a href="#bignumber">BigNumber</a> for further parameter details.</i>
    </p>
    <p>
      Returns <code>true</code> if the value of this BigNumber is greater than or equal to the value
      of <code>n</code>, otherwise returns <code>false</code>.
    </p>
    <p>Note: This method uses the <a href='#cmp'><code>comparedTo</code></a> method internally.</p>
    <pre>
(0.3 - 0.2) &gt;= 0.1                     // false
x = new BigNumber(0.3).minus(0.2)
x.isGreaterThanOrEqualTo(0.1)          // true
BigNumber(1).gte(x)                    // true
BigNumber(10, 18).gte('i', 36)         // true</pre>



    <h5 id="isInt">isInteger<code class='inset'>.isInteger() <i>&rArr; boolean</i></code></h5>
    <p>
      Returns <code>true</code> if the value of this BigNumber is an integer, otherwise returns
      <code>false</code>.
    </p>
    <pre>
x = new BigNumber(1)
x.isInteger()                   // true
y = new BigNumber(123.456)
y.isInteger()                   // false</pre>



    <h5 id="lt">isLessThan<code class='inset'>.lt(n [, base]) <i>&rArr; boolean</i></code></h5>
    <p>
      <code>n</code>: <i>number|string|BigNumber</i><br />
      <code>base</code>: <i>number</i><br />
      <i>See <a href="#bignumber">BigNumber</a> for further parameter details.</i>
    </p>
    <p>
      Returns <code>true</code> if the value of this BigNumber is less than the value of
      <code>n</code>, otherwise returns <code>false</code>.
    </p>
     <p>Note: This method uses the <a href='#cmp'><code>comparedTo</code></a> method internally.</p>
    <pre>
(0.3 - 0.2) &lt; 0.1                       // true
x = new BigNumber(0.3).minus(0.2)
x.isLessThan(0.1)                       // false
BigNumber(0).lt(x)                      // true
BigNumber(11.1, 2).lt(11, 3)            // true</pre>



    <h5 id="lte">
      isLessThanOrEqualTo<code class='inset'>.lte(n [, base]) <i>&rArr; boolean</i></code>
    </h5>
    <p>
      <code>n</code>: <i>number|string|BigNumber</i><br />
      <code>base</code>: <i>number</i><br />
      <i>See <a href="#bignumber">BigNumber</a> for further parameter details.</i>
    </p>
    <p>
      Returns <code>true</code> if the value of this BigNumber is less than or equal to the value of
      <code>n</code>, otherwise returns <code>false</code>.
    </p>
    <p>Note: This method uses the <a href='#cmp'><code>comparedTo</code></a> method internally.</p>
    <pre>
0.1 &lt;= (0.3 - 0.2)                                // false
x = new BigNumber(0.1)
x.isLessThanOrEqualTo(BigNumber(0.3).minus(0.2))  // true
BigNumber(-1).lte(x)                              // true
BigNumber(10, 18).lte('i', 36)                    // true</pre>



    <h5 id="isNaN">isNaN<code class='inset'>.isNaN() <i>&rArr; boolean</i></code></h5>
    <p>
      Returns <code>true</code> if the value of this BigNumber is <code>NaN</code>, otherwise
      returns <code>false</code>.
    </p>
    <pre>
x = new BigNumber(NaN)
x.isNaN()                       // true
y = new BigNumber('Infinity')
y.isNaN()                       // false</pre>
    <p>Note: The native method <code>isNaN()</code> can also be used.</p>



    <h5 id="isNeg">isNegative<code class='inset'>.isNegative() <i>&rArr; boolean</i></code></h5>
    <p>
      Returns <code>true</code> if the sign of this BigNumber is negative, otherwise returns
      <code>false</code>.
    </p>
    <pre>
x = new BigNumber(-0)
x.isNegative()                  // true
y = new BigNumber(2)
y.isNegative()                  // false</pre>
    <p>Note: <code>n &lt; 0</code> can be used if <code>n &lt;= -Number.MIN_VALUE</code>.</p>



    <h5 id="isPos">isPositive<code class='inset'>.isPositive() <i>&rArr; boolean</i></code></h5>
    <p>
      Returns <code>true</code> if the sign of this BigNumber is positive, otherwise returns
      <code>false</code>.
    </p>
    <pre>
x = new BigNumber(-0)
x.isPositive()                  // false
y = new BigNumber(2)
y.isPositive()                  // true</pre>



    <h5 id="isZ">isZero<code class='inset'>.isZero() <i>&rArr; boolean</i></code></h5>
    <p>
      Returns <code>true</code> if the value of this BigNumber is zero or minus zero, otherwise
      returns <code>false</code>.
    </p>
    <pre>
x = new BigNumber(-0)
x.isZero() && x.isNegative()         // true
y = new BigNumber(Infinity)
y.isZero()                      // false</pre>
    <p>Note: <code>n == 0</code> can be used if <code>n &gt;= Number.MIN_VALUE</code>.</p>



    <h5 id="minus">
      minus<code class='inset'>.minus(n [, base]) <i>&rArr; BigNumber</i></code>
    </h5>
    <p>
      <code>n</code>: <i>number|string|BigNumber</i><br />
      <code>base</code>: <i>number</i><br />
      <i>See <a href="#bignumber">BigNumber</a> for further parameter details.</i>
    </p>
    <p>Returns a BigNumber whose value is the value of this BigNumber minus <code>n</code>.</p>
    <p>The return value is always exact and unrounded.</p>
    <pre>
0.3 - 0.1                       // 0.19999999999999998
x = new BigNumber(0.3)
x.minus(0.1)                    // '0.2'
x.minus(0.6, 20)                // '0'</pre>



    <h5 id="mod">modulo<code class='inset'>.mod(n [, base]) <i>&rArr; BigNumber</i></code></h5>
    <p>
      <code>n</code>: <i>number|string|BigNumber</i><br />
      <code>base</code>: <i>number</i><br />
      <i>See <a href="#bignumber">BigNumber</a> for further parameter details.</i>
    </p>
    <p>
      Returns a BigNumber whose value is the value of this BigNumber modulo <code>n</code>, i.e.
      the integer remainder of dividing this BigNumber by <code>n</code>.
    </p>
    <p>
      The value returned, and in particular its sign, is dependent on the value of the
      <a href='#modulo-mode'><code>MODULO_MODE</code></a> setting of this BigNumber constructor.
      If it is <code>1</code> (default value), the result will have the same sign as this BigNumber,
      and it will match that of Javascript's <code>%</code> operator (within the limits of double
      precision) and BigDecimal's <code>remainder</code> method.
    </p>
    <p>The return value is always exact and unrounded.</p>
    <p>
      See <a href='#modulo-mode'><code>MODULO_MODE</code></a> for a description of the other
      modulo modes.
    </p>
    <pre>
1 % 0.9                         // 0.09999999999999998
x = new BigNumber(1)
x.modulo(0.9)                   // '0.1'
y = new BigNumber(33)
y.mod('a', 33)                  // '3'</pre>



    <h5 id="times">
      multipliedBy<code class='inset'>.times(n [, base]) <i>&rArr; BigNumber</i></code>
    </h5>
    <p>
      <code>n</code>: <i>number|string|BigNumber</i><br />
      <code>base</code>: <i>number</i><br />
      <i>See <a href="#bignumber">BigNumber</a> for further parameter details.</i>
    </p>
    <p>
      Returns a BigNumber whose value is the value of this BigNumber multiplied by <code>n</code>.
    </p>
    <p>The return value is always exact and unrounded.</p>
    <pre>
0.6 * 3                         // 1.7999999999999998
x = new BigNumber(0.6)
y = x.multipliedBy(3)           // '1.8'
BigNumber('7e+500').times(y)    // '1.26e+501'
x.multipliedBy('-a', 16)        // '-6'</pre>



    <h5 id="neg">negated<code class='inset'>.negated() <i>&rArr; BigNumber</i></code></h5>
    <p>
      Returns a BigNumber whose value is the value of this BigNumber negated, i.e. multiplied by
      <code>-1</code>.
    </p>
    <pre>
x = new BigNumber(1.8)
x.negated()                     // '-1.8'
y = new BigNumber(-1.3)
y.negated()                     // '1.3'</pre>



    <h5 id="plus">plus<code class='inset'>.plus(n [, base]) <i>&rArr; BigNumber</i></code></h5>
    <p>
      <code>n</code>: <i>number|string|BigNumber</i><br />
      <code>base</code>: <i>number</i><br />
      <i>See <a href="#bignumber">BigNumber</a> for further parameter details.</i>
    </p>
    <p>Returns a BigNumber whose value is the value of this BigNumber plus <code>n</code>.</p>
    <p>The return value is always exact and unrounded.</p>
    <pre>
0.1 + 0.2                       // 0.30000000000000004
x = new BigNumber(0.1)
y = x.plus(0.2)                 // '0.3'
BigNumber(0.7).plus(x).plus(y)  // '1.1'
x.plus('0.1', 8)                // '0.225'</pre>



    <h5 id="sd">
      precision<code class='inset'>.sd([d [, rm]]) <i>&rArr; BigNumber|number</i></code>
    </h5>
    <p>
      <code>d</code>: <i>number|boolean</i>: integer, <code>1</code> to <code>1e+9</code>
      inclusive, or <code>true</code> or <code>false</code><br />
      <code>rm</code>: <i>number</i>: integer, <code>0</code> to <code>8</code> inclusive.
    </p>
    <p>
      If <code>d</code> is a number, returns a BigNumber whose value is the value of this BigNumber
      rounded to a precision of <code>d</code> significant digits using rounding mode
      <code>rm</code>.
    </p>
    <p>
      If <code>d</code> is omitted or is <code>null</code> or <code>undefined</code>, the return
      value is the number of significant digits of the value of this BigNumber, or <code>null</code>
      if the value of this BigNumber is &plusmn;<code>Infinity</code> or <code>NaN</code>.</p>
    </p>
    <p>
      If <code>d</code> is <code>true</code> then any trailing zeros of the integer
      part of a number are counted as significant digits, otherwise they are not.
    </p>
    <p>
      If <code>rm</code> is omitted or is <code>null</code> or <code>undefined</code>,
      <a href='#rounding-mode'><code>ROUNDING_MODE</code></a> will be used.
    </p>
    <p>
      Throws if <code>d</code> or <code>rm</code> is invalid. See <a href='#Errors'>Errors</a>.
    </p>
    <pre>
x = new BigNumber(9876.54321)
x.precision(6)                         // '9876.54'
x.sd()                                 // 9
x.precision(6, BigNumber.ROUND_UP)     // '9876.55'
x.sd(2)                                // '9900'
x.precision(2, 1)                      // '9800'
x                                      // '9876.54321'
y = new BigNumber(987000)
y.precision()                          // 3
y.sd(true)                             // 6</pre>



<h5 id="shift">shiftedBy<code class='inset'>.shiftedBy(n) <i>&rArr; BigNumber</i></code></h5>
    <p>
      <code>n</code>: <i>number</i>: integer,
      <code>-9007199254740991</code> to <code>9007199254740991</code> inclusive
    </p>
    <p>
      Returns a BigNumber whose value is the value of this BigNumber shifted by <code>n</code>
      places.
    <p>
      The shift is of the decimal point, i.e. of powers of ten, and is to the left if <code>n</code>
      is negative or to the right if <code>n</code> is positive.
    </p>
    <p>The return value is always exact and unrounded.</p>
    <p>
      Throws if <code>n</code> is invalid. See <a href='#Errors'>Errors</a>.
    </p>
    <pre>
x = new BigNumber(1.23)
x.shiftedBy(3)                      // '1230'
x.shiftedBy(-3)                     // '0.00123'</pre>



    <h5 id="sqrt">squareRoot<code class='inset'>.sqrt() <i>&rArr; BigNumber</i></code></h5>
    <p>
      Returns a BigNumber whose value is the square root of the value of this BigNumber,
      rounded according to the current
      <a href='#decimal-places'><code>DECIMAL_PLACES</code></a> and
      <a href='#rounding-mode'><code>ROUNDING_MODE</code></a> settings.
    </p>
    <p>
      The return value will be correctly rounded, i.e. rounded as if the result was first calculated
      to an infinite number of correct digits before rounding.
    </p>
    <pre>
x = new BigNumber(16)
x.squareRoot()                  // '4'
y = new BigNumber(3)
y.sqrt()                        // '1.73205080756887729353'</pre>



    <h5 id="toE">
      toExponential<code class='inset'>.toExponential([dp [, rm]]) <i>&rArr; string</i></code>
    </h5>
    <p>
      <code>dp</code>: <i>number</i>: integer, <code>0</code> to <code>1e+9</code> inclusive<br />
      <code>rm</code>: <i>number</i>: integer, <code>0</code> to <code>8</code> inclusive
    </p>
    <p>
      Returns a string representing the value of this BigNumber in exponential notation rounded
      using rounding mode <code>rm</code> to <code>dp</code> decimal places, i.e with one digit
      before the decimal point and <code>dp</code> digits after it.
    </p>
    <p>
      If the value of this BigNumber in exponential notation has fewer than <code>dp</code> fraction
      digits, the return value will be appended with zeros accordingly.
    </p>
    <p>
      If <code>dp</code> is omitted, or is <code>null</code> or <code>undefined</code>, the number
      of digits after the decimal point defaults to the minimum number of digits necessary to
      represent the value exactly.<br />
      If <code>rm</code> is omitted or is <code>null</code> or <code>undefined</code>,
      <a href='#rounding-mode'><code>ROUNDING_MODE</code></a> is used.
    </p>
    <p>
      Throws if <code>dp</code> or <code>rm</code> is invalid. See <a href='#Errors'>Errors</a>.
    </p>
     <pre>
x = 45.6
y = new BigNumber(x)
x.toExponential()               // '4.56e+1'
y.toExponential()               // '4.56e+1'
x.toExponential(0)              // '5e+1'
y.toExponential(0)              // '5e+1'
x.toExponential(1)              // '4.6e+1'
y.toExponential(1)              // '4.6e+1'
y.toExponential(1, 1)           // '4.5e+1'  (ROUND_DOWN)
x.toExponential(3)              // '4.560e+1'
y.toExponential(3)              // '4.560e+1'</pre>



    <h5 id="toFix">
      toFixed<code class='inset'>.toFixed([dp [, rm]]) <i>&rArr; string</i></code>
    </h5>
    <p>
      <code>dp</code>: <i>number</i>: integer, <code>0</code> to <code>1e+9</code> inclusive<br />
      <code>rm</code>: <i>number</i>: integer, <code>0</code> to <code>8</code> inclusive
    </p>
    <p>
      Returns a string representing the value of this BigNumber in normal (fixed-point) notation
      rounded to <code>dp</code> decimal places using rounding mode <code>rm</code>.
    </p>
    <p>
      If the value of this BigNumber in normal notation has fewer than <code>dp</code> fraction
      digits, the return value will be appended with zeros accordingly.
    </p>
   <p>
      Unlike <code>Number.prototype.toFixed</code>, which returns exponential notation if a number
      is greater or equal to <code>10<sup>21</sup></code>, this method will always return normal
      notation.
    </p>
    <p>
      If <code>dp</code> is omitted or is <code>null</code> or <code>undefined</code>, the return
      value will be unrounded and in normal notation. This is also unlike
      <code>Number.prototype.toFixed</code>, which returns the value to zero decimal places.<br />
      It is useful when fixed-point notation is required and the current
      <a href="#exponential-at"><code>EXPONENTIAL_AT</code></a> setting causes
      <code><a href='#toS'>toString</a></code> to return exponential notation.<br />
      If <code>rm</code> is omitted or is <code>null</code> or <code>undefined</code>,
      <a href='#rounding-mode'><code>ROUNDING_MODE</code></a> is used.
    </p>
    <p>
      Throws if <code>dp</code> or <code>rm</code> is invalid. See <a href='#Errors'>Errors</a>.
    </p>
    <pre>
x = 3.456
y = new BigNumber(x)
x.toFixed()                     // '3'
y.toFixed()                     // '3.456'
y.toFixed(0)                    // '3'
x.toFixed(2)                    // '3.46'
y.toFixed(2)                    // '3.46'
y.toFixed(2, 1)                 // '3.45'  (ROUND_DOWN)
x.toFixed(5)                    // '3.45600'
y.toFixed(5)                    // '3.45600'</pre>



    <h5 id="toFor">
      toFormat<code class='inset'>.toFormat([dp [, rm[, format]]]) <i>&rArr; string</i></code>
    </h5>
    <p>
      <code>dp</code>: <i>number</i>: integer, <code>0</code> to <code>1e+9</code> inclusive<br />
      <code>rm</code>: <i>number</i>: integer, <code>0</code> to <code>8</code> inclusive<br />
      <code>format</code>: <i>object</i>: see <a href='#format'><code>FORMAT</code></a>
    </p>
    <p>
      <p>
      Returns a string representing the value of this BigNumber in normal (fixed-point) notation
      rounded to <code>dp</code> decimal places using rounding mode <code>rm</code>, and formatted
      according to the properties of the <code>format</code> object.
    </p>
    <p>
      See <a href='#format'><code>FORMAT</code></a> and the examples below for the properties of the
      <code>format</code> object, their types, and their usage. A formatting object may contain
      some or all of the recognised properties.
    </p>
    <p>
      If <code>dp</code> is omitted or is <code>null</code> or <code>undefined</code>, then the
      return value is not rounded to a fixed number of decimal places.<br />
      If <code>rm</code> is omitted or is <code>null</code> or <code>undefined</code>,
      <a href='#rounding-mode'><code>ROUNDING_MODE</code></a> is used.<br />
      If <code>format</code> is omitted or is <code>null</code> or <code>undefined</code>, the
      <a href='#format'><code>FORMAT</code></a> object is used.
    </p>
    <p>
      Throws if <code>dp</code>, <code>rm</code> or <code>format</code> is invalid. See
      <a href='#Errors'>Errors</a>.
    </p>
    <pre>
fmt = {
  prefix: '',
  decimalSeparator: '.',
  groupSeparator: ',',
  groupSize: 3,
  secondaryGroupSize: 0,
  fractionGroupSeparator: ' ',
  fractionGroupSize: 0,
  suffix: ''
}

x = new BigNumber('123456789.123456789')

// Set the global formatting options
BigNumber.config({ FORMAT: fmt })

x.toFormat()                              // '123,456,789.123456789'
x.toFormat(3)                             // '123,456,789.123'

// If a reference to the object assigned to FORMAT has been retained,
// the format properties can be changed directly
fmt.groupSeparator = ' '
fmt.fractionGroupSize = 5
x.toFormat()                              // '123 456 789.12345 6789'

// Alternatively, pass the formatting options as an argument
fmt = {
  prefix: '=> ',
  decimalSeparator: ',',
  groupSeparator: '.',
  groupSize: 3,
  secondaryGroupSize: 2
}

x.toFormat()                              // '123 456 789.12345 6789'
x.toFormat(fmt)                           // '=> 12.34.56.789,123456789'
x.toFormat(2, fmt)                        // '=> 12.34.56.789,12'
x.toFormat(3, BigNumber.ROUND_UP, fmt)    // '=> 12.34.56.789,124'</pre>



    <h5 id="toFr">
      toFraction<code class='inset'>.toFraction([maximum_denominator])
      <i>&rArr; [BigNumber, BigNumber]</i></code>
    </h5>
    <p>
      <code>maximum_denominator</code>:
      <i>number|string|BigNumber</i>: integer &gt;= <code>1</code> and &lt;=
      <code>Infinity</code>
    </p>
    <p>
      Returns an array of two BigNumbers representing the value of this BigNumber as a simple
      fraction with an integer numerator and an integer denominator. The denominator will be a
      positive non-zero value less than or equal to <code>maximum_denominator</code>.
    </p>
    <p>
      If a <code>maximum_denominator</code> is not specified, or is <code>null</code> or
      <code>undefined</code>, the denominator will be the lowest value necessary to represent the
      number exactly.
    </p>
    <p>
      Throws if <code>maximum_denominator</code> is invalid. See <a href='#Errors'>Errors</a>.
    </p>
    <pre>
x = new BigNumber(1.75)
x.toFraction()                  // '7, 4'

pi = new BigNumber('3.14159265358')
pi.toFraction()                 // '157079632679,50000000000'
pi.toFraction(100000)           // '312689, 99532'
pi.toFraction(10000)            // '355, 113'
pi.toFraction(100)              // '311, 99'
pi.toFraction(10)               // '22, 7'
pi.toFraction(1)                // '3, 1'</pre>



    <h5 id="toJSON">toJSON<code class='inset'>.toJSON() <i>&rArr; string</i></code></h5>
    <p>As <a href='#valueOf'><code>valueOf</code></a>.</p>
    <pre>
x = new BigNumber('177.7e+457')
y = new BigNumber(235.4325)
z = new BigNumber('0.0098074')

// Serialize an array of three BigNumbers
str = JSON.stringify( [x, y, z] )
// "["1.777e+459","235.4325","0.0098074"]"

// Return an array of three BigNumbers
JSON.parse(str, function (key, val) {
    return key === '' ? val : new BigNumber(val)
})</pre>



    <h5 id="toN">toNumber<code class='inset'>.toNumber() <i>&rArr; number</i></code></h5>
    <p>Returns the value of this BigNumber as a JavaScript number primitive.</p>
    <p>
      This method is identical to using type coercion with the unary plus operator.
    </p>
    <pre>
x = new BigNumber(456.789)
x.toNumber()                    // 456.789
+x                              // 456.789

y = new BigNumber('45987349857634085409857349856430985')
y.toNumber()                    // 4.598734985763409e+34

z = new BigNumber(-0)
1 / z.toNumber()                // -Infinity
1 / +z                          // -Infinity</pre>



    <h5 id="toP">
      toPrecision<code class='inset'>.toPrecision([sd [, rm]]) <i>&rArr; string</i></code>
    </h5>
    <p>
      <code>sd</code>: <i>number</i>: integer, <code>1</code> to <code>1e+9</code> inclusive<br />
      <code>rm</code>: <i>number</i>: integer, <code>0</code> to <code>8</code> inclusive
    </p>
    <p>
      Returns a string representing the value of this BigNumber rounded to <code>sd</code>
      significant digits using rounding mode <code>rm</code>.
    </p>
    <p>
      If <code>sd</code> is less than the number of digits necessary to represent the integer part
      of the value in normal (fixed-point) notation, then exponential notation is used.
    </p>
    <p>
      If <code>sd</code> is omitted, or is <code>null</code> or <code>undefined</code>, then the
      return value is the same as <code>n.toString()</code>.<br />
      If <code>rm</code> is omitted or is <code>null</code> or <code>undefined</code>,
      <a href='#rounding-mode'><code>ROUNDING_MODE</code></a> is used.
    </p>
    <p>
      Throws if <code>sd</code> or <code>rm</code> is invalid. See <a href='#Errors'>Errors</a>.
    </p>
     <pre>
x = 45.6
y = new BigNumber(x)
x.toPrecision()                 // '45.6'
y.toPrecision()                 // '45.6'
x.toPrecision(1)                // '5e+1'
y.toPrecision(1)                // '5e+1'
y.toPrecision(2, 0)             // '4.6e+1'  (ROUND_UP)
y.toPrecision(2, 1)             // '4.5e+1'  (ROUND_DOWN)
x.toPrecision(5)                // '45.600'
y.toPrecision(5)                // '45.600'</pre>



    <h5 id="toS">toString<code class='inset'>.toString([base]) <i>&rArr; string</i></code></h5>
    <p>
      <code>base</code>: <i>number</i>: integer, <code>2</code> to <code>ALPHABET.length</code>
      inclusive (see <a href='#alphabet'><code>ALPHABET</code></a>).
    </p>
    <p>
      Returns a string representing the value of this BigNumber in the specified base, or base
      <code>10</code> if <code>base</code> is omitted or is <code>null</code> or
      <code>undefined</code>.
    </p>
    <p>
      For bases above <code>10</code>, and using the default base conversion alphabet
      (see <a href='#alphabet'><code>ALPHABET</code></a>), values from <code>10</code> to
      <code>35</code> are represented by <code>a-z</code>
      (as with <code>Number.prototype.toString</code>).
    </p>
    <p>
      If a base is specified the value is rounded according to the current
      <a href='#decimal-places'><code>DECIMAL_PLACES</code></a>
      and <a href='#rounding-mode'><code>ROUNDING_MODE</code></a> settings.
    </p>
    <p>
      If a base is not specified, and this BigNumber has a positive
      exponent that is equal to or greater than the positive component of the
      current <a href="#exponential-at"><code>EXPONENTIAL_AT</code></a> setting,
      or a negative exponent equal to or less than the negative component of the
      setting, then exponential notation is returned.
    </p>
    <p>If <code>base</code> is <code>null</code> or <code>undefined</code> it is ignored.</p>
    <p>
      Throws if <code>base</code> is invalid. See <a href='#Errors'>Errors</a>.
    </p>
    <pre>
x = new BigNumber(750000)
x.toString()                    // '750000'
BigNumber.config({ EXPONENTIAL_AT: 5 })
x.toString()                    // '7.5e+5'

y = new BigNumber(362.875)
y.toString(2)                   // '101101010.111'
y.toString(9)                   // '442.77777777777777777778'
y.toString(32)                  // 'ba.s'

BigNumber.config({ DECIMAL_PLACES: 4 });
z = new BigNumber('1.23456789')
z.toString()                    // '1.23456789'
z.toString(10)                  // '1.2346'</pre>



    <h5 id="valueOf">valueOf<code class='inset'>.valueOf() <i>&rArr; string</i></code></h5>
    <p>
      As <a href='#toS'><code>toString</code></a>, but does not accept a base argument and includes
      the minus sign for negative zero.
    </p>
    <pre>
x = new BigNumber('-0')
x.toString()                    // '0'
x.valueOf()                     // '-0'
y = new BigNumber('1.777e+457')
y.valueOf()                     // '1.777e+457'</pre>



    <h4 id="instance-properties">Properties</h4>
    <p>The properties of a BigNumber instance:</p>
    <table>
      <tr>
        <th>Property</th>
        <th>Description</th>
        <th>Type</th>
        <th>Value</th>
      </tr>
      <tr>
        <td class='centre' id='coefficient'><b>c</b></td>
        <td>coefficient<sup>*</sup></td>
        <td><i>number</i><code>[]</code></td>
        <td> Array of base <code>1e14</code> numbers</td>
      </tr>
      <tr>
        <td class='centre' id='exponent'><b>e</b></td>
        <td>exponent</td>
        <td><i>number</i></td>
        <td>Integer, <code>-1000000000</code> to <code>1000000000</code> inclusive</td>
      </tr>
      <tr>
        <td class='centre' id='sign'><b>s</b></td>
        <td>sign</td>
        <td><i>number</i></td>
        <td><code>-1</code> or <code>1</code></td>
      </tr>
    </table>
    <p><sup>*</sup>significand</p>
    <p>
      The value of any of the <code>c</code>, <code>e</code> and <code>s</code> properties may also
      be <code>null</code>.
    </p>
    <p>
      The above properties are best considered to be read-only. In early versions of this library it
      was okay to change the exponent of a BigNumber by writing to its exponent property directly,
      but this is no longer reliable as the value of the first element of the coefficient array is
      now dependent on the exponent.
    </p>
    <p>
      Note that, as with JavaScript numbers, the original exponent and fractional trailing zeros are
      not necessarily preserved.
    </p>
    <pre>x = new BigNumber(0.123)              // '0.123'
x.toExponential()                     // '1.23e-1'
x.c                                   // '1,2,3'
x.e                                   // -1
x.s                                   // 1

y = new Number(-123.4567000e+2)       // '-12345.67'
y.toExponential()                     // '-1.234567e+4'
z = new BigNumber('-123.4567000e+2')  // '-12345.67'
z.toExponential()                     // '-1.234567e+4'
z.c                                   // '1,2,3,4,5,6,7'
z.e                                   // 4
z.s                                   // -1</pre>



    <h4 id="zero-nan-infinity">Zero, NaN and Infinity</h4>
    <p>
      The table below shows how &plusmn;<code>0</code>, <code>NaN</code> and
      &plusmn;<code>Infinity</code> are stored.
    </p>
    <table>
      <tr>
        <th> </th>
        <th class='centre'>c</th>
        <th class='centre'>e</th>
        <th class='centre'>s</th>
      </tr>
      <tr>
        <td>&plusmn;0</td>
        <td><code>[0]</code></td>
        <td><code>0</code></td>
        <td><code>&plusmn;1</code></td>
      </tr>
      <tr>
        <td>NaN</td>
        <td><code>null</code></td>
        <td><code>null</code></td>
        <td><code>null</code></td>
      </tr>
      <tr>
        <td>&plusmn;Infinity</td>
        <td><code>null</code></td>
        <td><code>null</code></td>
        <td><code>&plusmn;1</code></td>
      </tr>
    </table>
    <pre>
x = new Number(-0)              // 0
1 / x == -Infinity              // true

y = new BigNumber(-0)           // '0'
y.c                             // '0' ( [0].toString() )
y.e                             // 0
y.s                             // -1</pre>



    <h4 id='Errors'>Errors</h4>
    <p>The table below shows the errors that are thrown.</p>
    <p>
      The errors are generic <code>Error</code> objects whose message begins
      <code>'[BigNumber Error]'</code>.
    </p>
    <table class='error-table'>
      <tr>
        <th>Method</th>
        <th>Throws</th>
      </tr>
      <tr>
        <td rowspan=6>
          <code>BigNumber</code><br />
          <code>comparedTo</code><br />
          <code>dividedBy</code><br />
          <code>dividedToIntegerBy</code><br />
          <code>isEqualTo</code><br />
          <code>isGreaterThan</code><br />
          <code>isGreaterThanOrEqualTo</code><br />
          <code>isLessThan</code><br />
          <code>isLessThanOrEqualTo</code><br />
          <code>minus</code><br />
          <code>modulo</code><br />
          <code>plus</code><br />
          <code>multipliedBy</code>
        </td>
        <td>Base not a primitive number</td>
      </tr>
      <tr>
        <td>Base not an integer</td>
      </tr>
      <tr>
        <td>Base out of range</td>
      </tr>
       <tr>
        <td>Number primitive has more than 15 significant digits<sup>*</sup></td>
      </tr>
      <tr>
        <td>Not a base... number<sup>*</sup></td>
      </tr>
      <tr>
        <td>Not a number<sup>*</sup></td>
      </tr>
      <tr>
        <td><code>clone</code></td>
        <td>Object expected</td>
      </tr>
      <tr>
        <td rowspan=24><code>config</code></td>
        <td>Object expected</td>
      </tr>
      <tr>
        <td><code>DECIMAL_PLACES</code> not a primitive number</td>
      </tr>
      <tr>
        <td><code>DECIMAL_PLACES</code> not an integer</td>
      </tr>
      <tr>
        <td><code>DECIMAL_PLACES</code> out of range</td>
      </tr>
      <tr>
        <td><code>ROUNDING_MODE</code> not a primitive number</td>
      </tr>
      <tr>
        <td><code>ROUNDING_MODE</code> not an integer</td>
      </tr>
      <tr>
        <td><code>ROUNDING_MODE</code> out of range</td>
      </tr>
      <tr>
        <td><code>EXPONENTIAL_AT</code> not a primitive number</td>
      </tr>
      <tr>
        <td><code>EXPONENTIAL_AT</code> not an integer</td>
      </tr>
      <tr>
        <td><code>EXPONENTIAL_AT</code> out of range</td>
      </tr>
      <tr>
        <td><code>RANGE</code> not a primitive number</td>
      </tr>
      <tr>
        <td><code>RANGE</code> not an integer</td>
      </tr>
      <tr>
        <td><code>RANGE</code> cannot be zero</td>
      </tr>
      <tr>
        <td><code>RANGE</code> cannot be zero</td>
      </tr>
      <tr>
        <td><code>CRYPTO</code> not true or false</td>
      </tr>
      <tr>
        <td><code>crypto</code> unavailable</td>
      </tr>
      <tr>
        <td><code>MODULO_MODE</code> not a primitive number</td>
      </tr>
      <tr>
        <td><code>MODULO_MODE</code> not an integer</td>
      </tr>
      <tr>
        <td><code>MODULO_MODE</code> out of range</td>
      </tr>
      <tr>
        <td><code>POW_PRECISION</code> not a primitive number</td>
      </tr>
      <tr>
        <td><code>POW_PRECISION</code> not an integer</td>
      </tr>
      <tr>
        <td><code>POW_PRECISION</code> out of range</td>
      </tr>
      <tr>
        <td><code>FORMAT</code> not an object</td>
      </tr>
      <tr>
        <td><code>ALPHABET</code> invalid</td>
      </tr>
      <tr>
        <td rowspan=3>
          <code>decimalPlaces</code><br />
          <code>precision</code><br />
          <code>random</code><br />
          <code>shiftedBy</code><br />
          <code>toExponential</code><br />
          <code>toFixed</code><br />
          <code>toFormat</code><br />
          <code>toPrecision</code>
        </td>
        <td>Argument not a primitive number</td>
      </tr>
      <tr>
        <td>Argument not an integer</td>
      </tr>
      <tr>
        <td>Argument out of range</td>
      </tr>
      <tr>
        <td>
          <code>decimalPlaces</code><br />
          <code>precision</code>
        </td>
        <td>Argument not true or false</td>
      </tr>
      <tr>
        <td><code>exponentiatedBy</code></td>
        <td>Argument not an integer</td>
      </tr>
      <tr>
        <td><code>isBigNumber</code></td>
        <td>Invalid BigNumber<sup>*</sup></td>
      </tr>
      <tr>
        <td>
          <code>minimum</code><br />
          <code>maximum</code>
        </td>
        <td>Not a number<sup>*</sup></td>
      </tr>
      <tr>
        <td>
          <code>random</code>
        </td>
        <td>crypto unavailable</td>
      </tr>
      <tr>
        <td>
          <code>toFormat</code>
        </td>
        <td>Argument not an object</td>
      </tr>
      <tr>
        <td rowspan=2><code>toFraction</code></td>
        <td>Argument not an integer</td>
      </tr>
      <tr>
        <td>Argument out of range</td>
      </tr>
      <tr>
        <td rowspan=3><code>toString</code></td>
        <td>Base not a primitive number</td>
      </tr>
      <tr>
        <td>Base not an integer</td>
      </tr>
      <tr>
        <td>Base out of range</td>
      </tr>
    </table>
    <p><sup>*</sup>Only thrown if <code>BigNumber.DEBUG</code> is <code>true</code>.</p>
    <p>To determine if an exception is a BigNumber Error:</p>
    <pre>
try {
  // ...
} catch (e) {
  if (e instanceof Error && e.message.indexOf('[BigNumber Error]') === 0) {
      // ...
  }
}</pre>



    <h4 id="type-coercion">Type coercion</h4>
    <p>
      To prevent the accidental use of a BigNumber in primitive number operations, or the
      accidental addition of a BigNumber to a string, the <code>valueOf</code> method can be safely
      overwritten as shown below.
    </p>
    <p>
      The <a href='#valueOf'><code>valueOf</code></a> method is the same as the
      <a href='#toJSON'><code>toJSON</code></a> method, and both are the same as the
      <a href='#toS'><code>toString</code></a> method except they do not take a <code>base</code>
      argument and they include the minus sign for negative zero.
    </p>
    <pre>
BigNumber.prototype.valueOf = function () {
  throw Error('valueOf called!')
}

x = new BigNumber(1)
x / 2                    // '[BigNumber Error] valueOf called!'
x + 'abc'                // '[BigNumber Error] valueOf called!'
</pre>



    <h4 id='faq'>FAQ</h4>

    <h6>Why are trailing fractional zeros removed from BigNumbers?</h6>
    <p>
      Some arbitrary-precision libraries retain trailing fractional zeros as they can indicate the
      precision of a value. This can be useful but the results of arithmetic operations can be
      misleading.
    </p>
    <pre>
x = new BigDecimal("1.0")
y = new BigDecimal("1.1000")
z = x.add(y)                      // 2.1000

x = new BigDecimal("1.20")
y = new BigDecimal("3.45000")
z = x.multiply(y)                 // 4.1400000</pre>
    <p>
      To specify the precision of a value is to specify that the value lies
      within a certain range.
    </p>
    <p>
      In the first example, <code>x</code> has a value of <code>1.0</code>. The trailing zero shows
      the precision of the value, implying that it is in the range <code>0.95</code> to
      <code>1.05</code>. Similarly, the precision indicated by the trailing zeros of <code>y</code>
      indicates that the value is in the range <code>1.09995</code> to <code>1.10005</code>.
    </p>
    <p>
      If we  add the two lowest values in the ranges we have, <code>0.95 + 1.09995 = 2.04995</code>,
      and if we add the two highest values we have, <code>1.05 + 1.10005 = 2.15005</code>, so the
      range of the result of the addition implied by the precision of its operands is
      <code>2.04995</code> to <code>2.15005</code>.
    </p>
    <p>
      The result given by BigDecimal of <code>2.1000</code> however, indicates that the value is in
      the range <code>2.09995</code> to <code>2.10005</code> and therefore the precision implied by
      its trailing zeros may be misleading.
    </p>
    <p>
      In the second example, the true range is <code>4.122744</code> to <code>4.157256</code> yet
      the BigDecimal answer of <code>4.1400000</code> indicates a range of <code>4.13999995</code>
      to  <code>4.14000005</code>. Again, the precision implied by the trailing zeros may be
      misleading.
    </p>
    <p>
      This library, like binary floating point and most calculators, does not retain trailing
      fractional zeros. Instead, the <code>toExponential</code>, <code>toFixed</code> and
      <code>toPrecision</code> methods enable trailing zeros to be added if and when required.<br />
    </p>
  </div>

</body>
</html>