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Last change
on this file since d565449 was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago |
Update repo after prototype presentation
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100644
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File size:
1.2 KB
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[d565449] | 1 | 'use strict';
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| 2 |
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| 3 | var $TypeError = require('es-errors/type');
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| 4 |
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| 5 | var isNaN = require('../../helpers/isNaN');
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| 6 | var isFinite = require('../../helpers/isFinite');
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| 7 |
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| 8 | var truncate = require('../truncate');
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| 9 |
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| 10 | // https://262.ecma-international.org/14.0/#sec-numeric-types-number-remainder
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| 11 |
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| 12 | module.exports = function NumberRemainder(n, d) {
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| 13 | if (typeof n !== 'number' || typeof d !== 'number') {
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| 14 | throw new $TypeError('Assertion failed: `n` and `d` arguments must be Numbers');
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| 15 | }
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| 16 |
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| 17 | // If either operand is NaN, the result is NaN.
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| 18 | // If the dividend is an infinity, or the divisor is a zero, or both, the result is NaN.
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| 19 | if (isNaN(n) || isNaN(d) || !isFinite(n) || d === 0) {
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| 20 | return NaN;
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| 21 | }
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| 22 |
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| 23 | // If the dividend is finite and the divisor is an infinity, the result equals the dividend.
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| 24 | // 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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| 25 | if (!isFinite(d) || n === 0) {
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| 26 | return n;
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| 27 | }
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| 28 |
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| 29 | if (!isFinite(n) || !isFinite(d) || n === 0 || d === 0) {
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| 30 | throw new $TypeError('Assertion failed: `n` and `d` arguments must be finite and nonzero');
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| 31 | }
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| 32 | var quotient = n / d;
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| 33 | var q = truncate(quotient);
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| 34 | var r = n - (d * q);
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| 35 | if (r === 0 && n < 0) {
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| 36 | return -0;
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| 37 | }
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| 38 | return r;
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| 39 | };
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