54 lines
1.4 KiB
JavaScript
54 lines
1.4 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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var name = 're';
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var dependencies = ['typed'];
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export var createRe = /* #__PURE__ */factory(name, dependencies, _ref => {
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var {
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typed
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} = _ref;
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/**
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* Get the real part of a complex number.
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* For a complex number `a + bi`, the function returns `a`.
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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.re(x)
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*
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* Examples:
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*
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* const a = math.complex(2, 3)
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* math.re(a) // returns number 2
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* math.im(a) // returns number 3
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*
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* math.re(math.complex('-5.2i')) // returns number 0
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* math.re(math.complex(2.4)) // returns number 2.4
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*
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* See also:
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*
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* im, conj, abs, arg
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*
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* @param {number | BigNumber | Complex | Array | Matrix} x
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* A complex number or array with complex numbers
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* @return {number | BigNumber | Array | Matrix} The real part 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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return x;
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},
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BigNumber: function BigNumber(x) {
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return x;
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},
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Fraction: function Fraction(x) {
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return x;
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},
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Complex: function Complex(x) {
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return x.re;
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},
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'Array | Matrix': function ArrayMatrix(x) {
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return deepMap(x, this);
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}
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});
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});
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