Harmony: move math features to es-staging.

test/mjsunit/harmony/math-expm1.js

-// Copyright 2014 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --harmony-maths --no-fast-math
-
-assertTrue(isNaN(Math.expm1(NaN)));
-assertTrue(isNaN(Math.expm1(function() {})));
-assertTrue(isNaN(Math.expm1({ toString: function() { return NaN; } })));
-assertTrue(isNaN(Math.expm1({ valueOf: function() { return "abc"; } })));
-assertEquals("Infinity", String(1/Math.expm1(0)));
-assertEquals("-Infinity", String(1/Math.expm1(-0)));
-assertEquals("Infinity", String(Math.expm1(Infinity)));
-assertEquals(-1, Math.expm1(-Infinity));
-
-for (var x = 0.1; x < 700; x += 0.1) {
-  var expected = Math.exp(x) - 1;
-  assertEqualsDelta(expected, Math.expm1(x), expected * 1E-14);
-  expected = Math.exp(-x) - 1;
-  assertEqualsDelta(expected, Math.expm1(-x), -expected * 1E-14);
-}
-
-// Values close to 0:
-// Use six terms of Taylor expansion at 0 for exp(x) as test expectation:
-// exp(x) - 1 == exp(0) + exp(0) * x + x * x / 2 + ... - 1
-//            == x + x * x / 2 + x * x * x / 6 + ...
-function expm1(x) {
-  return x * (1 + x * (1/2 + x * (
-              1/6 + x * (1/24 + x * (
-              1/120 + x * (1/720 + x * (
-              1/5040 + x * (1/40320 + x*(
-              1/362880 + x * (1/3628800))))))))));
-}
-
-for (var x = 1E-1; x > 1E-300; x *= 0.8) {
-  var expected = expm1(x);
-  assertEqualsDelta(expected, Math.expm1(x), expected * 1E-14);
-}