| import {formatDecimalParts} from "./formatDecimal.js"; |
|
|
| export var prefixExponent; |
|
|
| export default function(x, p) { |
| var d = formatDecimalParts(x, p); |
| if (!d) return prefixExponent = undefined, x.toPrecision(p); |
| var coefficient = d[0], |
| exponent = d[1], |
| i = exponent - (prefixExponent = Math.max(-8, Math.min(8, Math.floor(exponent / 3))) * 3) + 1, |
| n = coefficient.length; |
| return i === n ? coefficient |
| : i > n ? coefficient + new Array(i - n + 1).join("0") |
| : i > 0 ? coefficient.slice(0, i) + "." + coefficient.slice(i) |
| : "0." + new Array(1 - i).join("0") + formatDecimalParts(x, Math.max(0, p + i - 1))[0]; |
| } |
|
|
