prevPow10 - nodef/extra-bigint GitHub Wiki
Find largest power-of-10 less than or equal to given bigint.
Similar: prevPow2, prevPow10.
Similar: isPow10, prevPow10, nextPow10.
function prevPow10(x)
// x: a bigint
const xbigint = require('extra-bigint');
xbigint.prevPow10(10n);
// → 10n
xbigint.prevPow10(999n);
// → 100n
References