'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.createAcos = void 0;

var _factory = require("../../utils/factory");

var _collection = require("../../utils/collection");

var name = 'acos';
var dependencies = ['typed', 'config', 'Complex'];
var createAcos =
/* #__PURE__ */
(0, _factory.factory)(name, dependencies, function (_ref) {
  var typed = _ref.typed,
      config = _ref.config,
      Complex = _ref.Complex;

  /**
   * Calculate the inverse cosine of a value.
   *
   * For matrices, the function is evaluated element wise.
   *
   * Syntax:
   *
   *    math.acos(x)
   *
   * Examples:
   *
   *    math.acos(0.5)           // returns number 1.0471975511965979
   *    math.acos(math.cos(1.5)) // returns number 1.5
   *
   *    math.acos(2)             // returns Complex 0 + 1.3169578969248166 i
   *
   * See also:
   *
   *    cos, atan, asin
   *
   * @param {number | BigNumber | Complex | Array | Matrix} x  Function input
   * @return {number | BigNumber | Complex | Array | Matrix} The arc cosine of x
   */
  var acos = typed(name, {
    'number': function number(x) {
      if (x >= -1 && x <= 1 || config.predictable) {
        return Math.acos(x);
      } else {
        return new Complex(x, 0).acos();
      }
    },
    'Complex': function Complex(x) {
      return x.acos();
    },
    'BigNumber': function BigNumber(x) {
      return x.acos();
    },
    'Array | Matrix': function ArrayMatrix(x) {
      return (0, _collection.deepMap)(x, acos);
    }
  });
  return acos;
});
exports.createAcos = createAcos;