mathjs/lib/utils/bignumber/constants.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.createBigNumberTau = exports.createBigNumberPi = exports.createBigNumberPhi = exports.createBigNumberE = void 0;

var _function = require("../function");

/**
 * Calculate BigNumber e
 * @param {function} BigNumber   BigNumber constructor
 * @returns {BigNumber} Returns e
 */
var createBigNumberE = (0, _function.memoize)(function (BigNumber) {
  return new BigNumber(1).exp();
}, hasher);
/**
 * Calculate BigNumber golden ratio, phi = (1+sqrt(5))/2
 * @param {function} BigNumber   BigNumber constructor
 * @returns {BigNumber} Returns phi
 */

exports.createBigNumberE = createBigNumberE;
var createBigNumberPhi = (0, _function.memoize)(function (BigNumber) {
  return new BigNumber(1).plus(new BigNumber(5).sqrt()).div(2);
}, hasher);
/**
 * Calculate BigNumber pi.
 * @param {function} BigNumber   BigNumber constructor
 * @returns {BigNumber} Returns pi
 */

exports.createBigNumberPhi = createBigNumberPhi;
var createBigNumberPi = (0, _function.memoize)(function (BigNumber) {
  return BigNumber.acos(-1);
}, hasher);
/**
 * Calculate BigNumber tau, tau = 2 * pi
 * @param {function} BigNumber   BigNumber constructor
 * @returns {BigNumber} Returns tau
 */

exports.createBigNumberPi = createBigNumberPi;
var createBigNumberTau = (0, _function.memoize)(function (BigNumber) {
  return createBigNumberPi(BigNumber).times(2);
}, hasher);
/**
 * Create a hash for a BigNumber constructor function. The created has is
 * the configured precision
 * @param {Array} args         Supposed to contain a single entry with
 *                             a BigNumber constructor
 * @return {number} precision
 * @private
 */

exports.createBigNumberTau = createBigNumberTau;

function hasher(args) {
  return args[0].precision;
}