Math

Champions: (?)
Details: full proposal
Wiki: More Math Functions Candidate Library Extensions Spec

Adds a few new functions to the Math object.

log10

Returns the approximate base 10 logarithm of the first parameter.

log2

Returns the approximate base 2 logarithm of the first parameter.

log1p

expm1

cosh

sinh

tanh

acosh

asinh

atanh

hypot

trunc

sign

This function returns the sign of the first parameter, specifiying wether the value is positive, negative or zero.

Math.sign(-5) // -1
Math.sign(5) // +1
Math.sign(0) // +0
Math.sign(-) // -0
Math.sign(NaN) // NaN

Polyfill for Math.sign

(function (global) {
  var isNaN = Number.isNaN;

  Object.defineProperty(Math, 'sign', {
    value: function sign(value) {
      var n = +value;
      if (isNaN(n))
        return n /* NaN */;

      if (n === 0)
        return n; // Keep the sign of the zero.

      return (n < 0) ? -1 : 1;
    },
    configurable: true,
    enumerable: false,
    writable: true
  });
})(this);