40 lines
1.2 KiB
JavaScript
40 lines
1.2 KiB
JavaScript
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'use strict';
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var $TypeError = require('es-errors/type');
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var isNaN = require('../../helpers/isNaN');
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var isFinite = require('../../helpers/isFinite');
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var truncate = require('../truncate');
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// https://262.ecma-international.org/14.0/#sec-numeric-types-number-remainder
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module.exports = function NumberRemainder(n, d) {
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if (typeof n !== 'number' || typeof d !== 'number') {
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throw new $TypeError('Assertion failed: `n` and `d` arguments must be Numbers');
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}
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// If either operand is NaN, the result is NaN.
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// If the dividend is an infinity, or the divisor is a zero, or both, the result is NaN.
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if (isNaN(n) || isNaN(d) || !isFinite(n) || d === 0) {
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return NaN;
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}
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// If the dividend is finite and the divisor is an infinity, the result equals the dividend.
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// If the dividend is a zero and the divisor is nonzero and finite, the result is the same as the dividend.
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if (!isFinite(d) || n === 0) {
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return n;
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}
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if (!isFinite(n) || !isFinite(d) || n === 0 || d === 0) {
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throw new $TypeError('Assertion failed: `n` and `d` arguments must be finite and nonzero');
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}
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var quotient = n / d;
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var q = truncate(quotient);
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var r = n - (d * q);
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if (r === 0 && n < 0) {
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return -0;
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}
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return r;
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};
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