ysjj-system/node_modules/mathjs/lib/esm/function/arithmetic/unaryMinus.js

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

    // TODO: add support for string
  });
});