main
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Last change
on this file was 79a0317, checked in by stefan toskovski <stefantoska84@…>, 3 days ago |
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F4 Finalna Verzija
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File size:
771 bytes
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| 1 | 'use strict';
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| 2 | var $ = require('../internals/export');
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| 3 | var log1p = require('../internals/math-log1p');
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| 4 |
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| 5 | // eslint-disable-next-line es/no-math-acosh -- required for testing
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| 6 | var $acosh = Math.acosh;
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| 7 | var log = Math.log;
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| 8 | var sqrt = Math.sqrt;
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| 9 | var LN2 = Math.LN2;
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| 10 |
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| 11 | var FORCED = !$acosh
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| 12 | // V8 bug: https://code.google.com/p/v8/issues/detail?id=3509
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| 13 | || Math.floor($acosh(Number.MAX_VALUE)) !== 710
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| 14 | // Tor Browser bug: Math.acosh(Infinity) -> NaN
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| 15 | || $acosh(Infinity) !== Infinity;
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| 16 |
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| 17 | // `Math.acosh` method
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| 18 | // https://tc39.es/ecma262/#sec-math.acosh
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| 19 | $({ target: 'Math', stat: true, forced: FORCED }, {
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| 20 | acosh: function acosh(x) {
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| 21 | var n = +x;
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| 22 | return n < 1 ? NaN : n > 94906265.62425156
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| 23 | ? log(n) + LN2
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| 24 | : log1p(n - 1 + sqrt(n - 1) * sqrt(n + 1));
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| 25 | }
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| 26 | });
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