'use strict';

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

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

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

var _number = require("../../plain/number");

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

  /**
   * Calculate the hyperbolic arcsecant of a value,
   * defined as `asech(x) = acosh(1/x) = ln(sqrt(1/x^2 - 1) + 1/x)`.
   *
   * For matrices, the function is evaluated element wise.
   *
   * Syntax:
   *
   *    math.asech(x)
   *
   * Examples:
   *
   *    math.asech(0.5)       // returns 1.3169578969248166
   *
   * See also:
   *
   *    acsch, acoth
   *
   * @param {number | Complex | Array | Matrix} x  Function input
   * @return {number | Complex | Array | Matrix} Hyperbolic arcsecant of x
   */
  var asech = typed(name, {
    'number': function number(x) {
      if (x <= 1 && x >= -1 || config.predictable) {
        var xInv = 1 / x;

        if (xInv > 0 || config.predictable) {
          return (0, _number.asechNumber)(x);
        }

        var ret = Math.sqrt(xInv * xInv - 1);
        return new Complex(Math.log(ret - xInv), Math.PI);
      }

      return new Complex(x, 0).asech();
    },
    'Complex': function Complex(x) {
      return x.asech();
    },
    'BigNumber': function BigNumber(x) {
      return new _BigNumber(1).div(x).acosh();
    },
    'Array | Matrix': function ArrayMatrix(x) {
      return (0, _collection.deepMap)(x, asech);
    }
  });
  return asech;
});
exports.createAsech = createAsech;