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20 lines
580 B
20 lines
580 B
var $ = require('../internals/export'); |
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var fails = require('../internals/fails'); |
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var expm1 = require('../internals/math-expm1'); |
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var abs = Math.abs; |
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var exp = Math.exp; |
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var E = Math.E; |
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var FORCED = fails(function () { |
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return Math.sinh(-2e-17) != -2e-17; |
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}); |
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// `Math.sinh` method |
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// https://tc39.github.io/ecma262/#sec-math.sinh |
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// V8 near Chromium 38 has a problem with very small numbers |
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$({ target: 'Math', stat: true, forced: FORCED }, { |
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sinh: function sinh(x) { |
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return abs(x = +x) < 1 ? (expm1(x) - expm1(-x)) / 2 : (exp(x - 1) - exp(-x - 1)) * (E / 2); |
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} |
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});
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