Nodejs Number Sign sign(x)

Here you can find the source of sign(x)

Method Source Code

Math.sign = function(x) {
  if (x > 0) {
    return 1/*from   w w  w  .ja v  a 2s . c  om*/
  } else if (x < 0) {
    return -1
  } else {
    return 0
  }
}

Related

  1. sign()
    Math.sign = function(x) {
      if (x > 0) {
        return 1
      } else if (x < 0) {
        return -1
      } else {
        return 0
    
  2. sign(d)
    Math.prototype.sign = function(d) {
      return d<0 ? -1 : 1;
    };
    
  3. sign(x)
    Math.sign = function(x) {
      x = +x;
      if (x === 0 || isNaN(x))
        return x;
      return x > 0 ? 1 : -1;
    
  4. sign(x)
    Math.sign = Math.sign || function (x) {
        return x === 0 ? 0 : x / Math.abs(x);
    };
    
  5. sign()
    Number.prototype.sign = function() {
      if(this > 0) {
        return 1;
      } else if (this < 0) {
        return -1;
      } else {
        return 0;
    
  6. sign()
    Number.prototype.sign = function() {
        return (this>0) - (this<0);
    };
    
  7. signed()
    'use strict';
    Number.prototype.signed = function () {
        return this & 0x80 ? -((0xff & ~this) + 1) : this;
    };