| // 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: --allow-natives-syntax |
| |
| function assertDoubleBits(hi, lo, x) { |
| hi = hi | 0; |
| lo = lo | 0; |
| assertEquals(x, %_ConstructDouble(hi, lo)); |
| assertEquals(hi, %_DoubleHi(x)); |
| assertEquals(lo, %_DoubleLo(x)); |
| assertEquals(x, %_ConstructDouble(%_DoubleHi(x), %_DoubleLo(x))); |
| } |
| |
| |
| var tests = [0x7ff00000, 0x00000000, Infinity, |
| 0xfff00000, 0x00000000, -Infinity, |
| 0x80000000, 0x00000000, -0, |
| 0x400921fb, 0x54442d18, Math.PI, |
| 0xc00921fb, 0x54442d18, -Math.PI, |
| 0x4005bf0a, 0x8b145769, Math.E, |
| 0xc005bf0a, 0x8b145769, -Math.E, |
| 0xbfe80000, 0x00000000, -0.75]; |
| |
| |
| for (var i = 0; i < tests.length; i += 3) { |
| assertDoubleBits(tests[i], tests[i + 1], tests[i + 2]); |
| } |
| |
| %OptimizeFunctionOnNextCall(assertDoubleBits); |
| |
| for (var i = 0; i < tests.length; i += 3) { |
| assertDoubleBits(tests[i], tests[i + 1], tests[i + 2]); |
| assertOptimized(assertDoubleBits); |
| } |