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15 lines
428 B
15 lines
428 B
var $ = require('../internals/export'); |
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var expm1 = require('../internals/math-expm1'); |
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var nativeCosh = Math.cosh; |
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var abs = Math.abs; |
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var E = Math.E; |
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// `Math.cosh` method |
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// https://tc39.github.io/ecma262/#sec-math.cosh |
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$({ target: 'Math', stat: true, forced: !nativeCosh || nativeCosh(710) === Infinity }, { |
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cosh: function cosh(x) { |
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var t = expm1(abs(x) - 1) + 1; |
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return (t + 1 / (t * E * E)) * (E / 2); |
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} |
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});
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