mathjs/es/function/arithmetic/fix.js

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with dif

import { factory } from '../../utils/factory';
import { deepMap } from '../../utils/collection';
var name = 'fix';
var dependencies = ['typed', 'Complex', 'ceil', 'floor'];
export var createFix =
/* #__PURE__ */
factory(name, dependencies, function (_ref) {
  var typed = _ref.typed,
      _Complex = _ref.Complex,
      ceil = _ref.ceil,
      floor = _ref.floor;

  /**
   * Round a value towards zero.
   * For matrices, the function is evaluated element wise.
   *
   * Syntax:
   *
   *    math.fix(x)
   *
   * Examples:
   *
   *    math.fix(3.2)                // returns number 3
   *    math.fix(3.8)                // returns number 3
   *    math.fix(-4.2)               // returns number -4
   *    math.fix(-4.7)               // returns number -4
   *
   *    const c = math.complex(3.2, -2.7)
   *    math.fix(c)                  // returns Complex 3 - 2i
   *
   *    math.fix([3.2, 3.8, -4.7])   // returns Array [3, 3, -4]
   *
   * See also:
   *
   *    ceil, floor, round
   *
   * @param {number | BigNumber | Fraction | Complex | Array | Matrix} x Number to be rounded
   * @return {number | BigNumber | Fraction | Complex | Array | Matrix}            Rounded value
   */
  var fix = typed('fix', {
    number: function number(x) {
      return x > 0 ? floor(x) : ceil(x);
    },
    Complex: function Complex(x) {
      return new _Complex(x.re > 0 ? Math.floor(x.re) : Math.ceil(x.re), x.im > 0 ? Math.floor(x.im) : Math.ceil(x.im));
    },
    BigNumber: function BigNumber(x) {
      return x.isNegative() ? ceil(x) : floor(x);
    },
    Fraction: function Fraction(x) {
      return x.s < 0 ? x.ceil() : x.floor();
    },
    'Array | Matrix': function ArrayMatrix(x) {
      // deep map collection, skip zeros since fix(0) = 0
      return deepMap(x, fix, true);
    }
  });
  return fix;
});