53 lines
1.3 KiB
JavaScript
53 lines
1.3 KiB
JavaScript
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import { factory } from '../../utils/factory.js';
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import { deepMap } from '../../utils/collection.js';
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import { atanhNumber } from '../../plain/number/index.js';
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var name = 'atanh';
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var dependencies = ['typed', 'config', 'Complex'];
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export var createAtanh = /* #__PURE__ */factory(name, dependencies, _ref => {
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var {
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typed,
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config,
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Complex
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} = _ref;
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/**
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* Calculate the hyperbolic arctangent of a value,
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* defined as `atanh(x) = ln((1 + x)/(1 - x)) / 2`.
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*
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* For matrices, the function is evaluated element wise.
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*
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* Syntax:
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*
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* math.atanh(x)
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*
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* Examples:
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*
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* math.atanh(0.5) // returns 0.5493061443340549
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*
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* See also:
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*
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* acosh, asinh
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*
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* @param {number | Complex | Array | Matrix} x Function input
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* @return {number | Complex | Array | Matrix} Hyperbolic arctangent of x
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*/
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return typed(name, {
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number: function number(x) {
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if (x <= 1 && x >= -1 || config.predictable) {
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return atanhNumber(x);
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}
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return new Complex(x, 0).atanh();
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},
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Complex: function Complex(x) {
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return x.atanh();
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},
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BigNumber: function BigNumber(x) {
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return x.atanh();
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},
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'Array | Matrix': function ArrayMatrix(x) {
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// deep map collection, skip zeros since atanh(0) = 0
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return deepMap(x, this, true);
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}
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});
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});
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