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