| 1 | var $ = require('../internals/export');
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| 2 | var fails = require('../internals/fails');
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| 3 | var expm1 = require('../internals/math-expm1');
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| 4 |
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| 5 | var abs = Math.abs;
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| 6 | var exp = Math.exp;
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| 7 | var E = Math.E;
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| 8 |
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| 9 | var FORCED = fails(function () {
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| 10 | return Math.sinh(-2e-17) != -2e-17;
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| 11 | });
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| 12 |
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| 13 | // `Math.sinh` method
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| 14 | // https://tc39.github.io/ecma262/#sec-math.sinh
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| 15 | // V8 near Chromium 38 has a problem with very small numbers
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| 16 | $({ target: 'Math', stat: true, forced: FORCED }, {
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| 17 | sinh: function sinh(x) {
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| 18 | return abs(x = +x) < 1 ? (expm1(x) - expm1(-x)) / 2 : (exp(x - 1) - exp(-x - 1)) * (E / 2);
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| 19 | }
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| 20 | });
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