prevPow10

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

• prevpow(): jlHub