'use strict';

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

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

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

var name = 'tan';
var dependencies = ['typed'];
var createTan =
/* #__PURE__ */
(0, _factory.factory)(name, dependencies, function (_ref) {
  var typed = _ref.typed;

  /**
   * Calculate the tangent of a value. `tan(x)` is equal to `sin(x) / cos(x)`.
   *
   * For matrices, the function is evaluated element wise.
   *
   * Syntax:
   *
   *    math.tan(x)
   *
   * Examples:
   *
   *    math.tan(0.5)                    // returns number 0.5463024898437905
   *    math.sin(0.5) / math.cos(0.5)    // returns number 0.5463024898437905
   *    math.tan(math.pi / 4)            // returns number 1
   *    math.tan(math.unit(45, 'deg'))   // returns number 1
   *
   * See also:
   *
   *    atan, sin, cos
   *
   * @param {number | BigNumber | Complex | Unit | Array | Matrix} x  Function input
   * @return {number | BigNumber | Complex | Array | Matrix} Tangent of x
   */
  var tan = typed(name, {
    'number': Math.tan,
    'Complex': function Complex(x) {
      return x.tan();
    },
    'BigNumber': function BigNumber(x) {
      return x.tan();
    },
    'Unit': function Unit(x) {
      if (!x.hasBase(x.constructor.BASE_UNITS.ANGLE)) {
        throw new TypeError('Unit in function tan is no angle');
      }

      return tan(x.value);
    },
    'Array | Matrix': function ArrayMatrix(x) {
      // deep map collection, skip zeros since tan(0) = 0
      return (0, _collection.deepMap)(x, tan, true);
    }
  });
  return tan;
});
exports.createTan = createTan;