56 lines
1.6 KiB
JavaScript
56 lines
1.6 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 { unaryMinusNumber } from '../../plain/number/index.js';
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var name = 'unaryMinus';
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var dependencies = ['typed'];
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export var createUnaryMinus = /* #__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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* Inverse the sign of a value, apply a unary minus operation.
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*
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* For matrices, the function is evaluated element wise. Boolean values and
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* strings will be converted to a number. For complex numbers, both real and
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* complex value are inverted.
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*
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* Syntax:
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*
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* math.unaryMinus(x)
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*
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* Examples:
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*
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* math.unaryMinus(3.5) // returns -3.5
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* math.unaryMinus(-4.2) // returns 4.2
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*
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* See also:
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*
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* add, subtract, unaryPlus
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*
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* @param {number | BigNumber | Fraction | Complex | Unit | Array | Matrix} x Number to be inverted.
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* @return {number | BigNumber | Fraction | Complex | Unit | Array | Matrix} Returns the value with inverted sign.
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*/
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return typed(name, {
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number: unaryMinusNumber,
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Complex: function Complex(x) {
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return x.neg();
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},
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BigNumber: function BigNumber(x) {
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return x.neg();
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},
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Fraction: function Fraction(x) {
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return x.neg();
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},
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Unit: function Unit(x) {
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var res = x.clone();
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res.value = this(x.value);
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return res;
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},
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'Array | Matrix': function ArrayMatrix(x) {
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// deep map collection, skip zeros since unaryMinus(0) = 0
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return deepMap(x, this, true);
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} // TODO: add support for string
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});
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});
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