ysjj-system/node_modules/mathjs/lib/esm/function/trigonometry/sech.js

import { factory } from '../../utils/factory.js';
import { sechNumber } from '../../plain/number/index.js';
var name = 'sech';
var dependencies = ['typed', 'BigNumber'];
export var createSech = /* #__PURE__ */factory(name, dependencies, _ref => {
  var {
    typed,
    BigNumber: _BigNumber
  } = _ref;
  /**
   * Calculate the hyperbolic secant of a value,
   * defined as `sech(x) = 1 / cosh(x)`.
   *
   * To avoid confusion with the matrix hyperbolic secant, this function does
   * not apply to matrices.
   *
   * Syntax:
   *
   *    math.sech(x)
   *
   * Examples:
   *
   *    // sech(x) = 1/ cosh(x)
   *    math.sech(0.5)       // returns 0.886818883970074
   *    1 / math.cosh(0.5)   // returns 0.886818883970074
   *
   * See also:
   *
   *    cosh, csch, coth
   *
   * @param {number | BigNumber | Complex} x  Function input
   * @return {number | BigNumber | Complex} Hyperbolic secant of x
   */
  return typed(name, {
    number: sechNumber,
    Complex: x => x.sech(),
    BigNumber: x => new _BigNumber(1).div(x.cosh())
  });
});