mathjs/lib/function/trigonometry/csc.js

"use strict";

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

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

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

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

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

  /**
   * Calculate the cosecant of a value, defined as `csc(x) = 1/sin(x)`.
   *
   * For matrices, the function is evaluated element wise.
   *
   * Syntax:
   *
   *    math.csc(x)
   *
   * Examples:
   *
   *    math.csc(2)      // returns number 1.099750170294617
   *    1 / math.sin(2)  // returns number 1.099750170294617
   *
   * See also:
   *
   *    sin, sec, cot
   *
   * @param {number | Complex | Unit | Array | Matrix} x  Function input
   * @return {number | Complex | Array | Matrix} Cosecant of x
   */
  var csc = typed(name, {
    number: _number.cscNumber,
    Complex: function Complex(x) {
      return x.csc();
    },
    BigNumber: function BigNumber(x) {
      return new _BigNumber(1).div(x.sin());
    },
    Unit: function Unit(x) {
      if (!x.hasBase(x.constructor.BASE_UNITS.ANGLE)) {
        throw new TypeError('Unit in function csc is no angle');
      }

      return csc(x.value);
    },
    'Array | Matrix': function ArrayMatrix(x) {
      return (0, _collection.deepMap)(x, csc);
    }
  });
  return csc;
});
exports.createCsc = createCsc;