mathjs/lib/esm/function/trigonometry/cosh.js

import { factory } from '../../utils/factory.js';
import { deepMap } from '../../utils/collection.js';
import { cosh as coshNumber } from '../../utils/number.js';
var name = 'cosh';
var dependencies = ['typed'];
export var createCosh = /* #__PURE__ */factory(name, dependencies, (_ref) => {
  var {
    typed
  } = _ref;

  /**
   * Calculate the hyperbolic cosine of a value,
   * defined as `cosh(x) = 1/2 * (exp(x) + exp(-x))`.
   *
   * For matrices, the function is evaluated element wise.
   *
   * Syntax:
   *
   *    math.cosh(x)
   *
   * Examples:
   *
   *    math.cosh(0.5)       // returns number 1.1276259652063807
   *
   * See also:
   *
   *    sinh, tanh
   *
   * @param {number | BigNumber | Complex | Unit | Array | Matrix} x  Function input
   * @return {number | BigNumber | Complex | Array | Matrix} Hyperbolic cosine of x
   */
  return typed(name, {
    number: coshNumber,
    Complex: function Complex(x) {
      return x.cosh();
    },
    BigNumber: function BigNumber(x) {
      return x.cosh();
    },
    Unit: function Unit(x) {
      if (!x.hasBase(x.constructor.BASE_UNITS.ANGLE)) {
        throw new TypeError('Unit in function cosh is no angle');
      }

      return this(x.value);
    },
    'Array | Matrix': function ArrayMatrix(x) {
      return deepMap(x, this);
    }
  });
});