mathjs/es/function/logical/not.js

import { deepMap } from '../../utils/collection';
import { factory } from '../../utils/factory';
import { notNumber } from '../../plain/number';
var name = 'not';
var dependencies = ['typed'];
export var createNot =
/* #__PURE__ */
factory(name, dependencies, function (_ref) {
  var typed = _ref.typed;

  /**
   * Logical `not`. Flips boolean value of a given parameter.
   * For matrices, the function is evaluated element wise.
   *
   * Syntax:
   *
   *    math.not(x)
   *
   * Examples:
   *
   *    math.not(2)      // returns false
   *    math.not(0)      // returns true
   *    math.not(true)   // returns false
   *
   *    a = [2, -7, 0]
   *    math.not(a)      // returns [false, false, true]
   *
   * See also:
   *
   *    and, or, xor
   *
   * @param  {number | BigNumber | Complex | Unit | Array | Matrix} x First value to check
   * @return {boolean | Array | Matrix}
   *            Returns true when input is a zero or empty value.
   */
  var not = typed(name, {
    number: notNumber,
    Complex: function Complex(x) {
      return x.re === 0 && x.im === 0;
    },
    BigNumber: function BigNumber(x) {
      return x.isZero() || x.isNaN();
    },
    Unit: function Unit(x) {
      return x.value !== null ? not(x.value) : true;
    },
    'Array | Matrix': function ArrayMatrix(x) {
      return deepMap(x, not);
    }
  });
  return not;
});