diff options
Diffstat (limited to 'deps/v8/src/a64/utils-a64.h')
-rw-r--r-- | deps/v8/src/a64/utils-a64.h | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/deps/v8/src/a64/utils-a64.h b/deps/v8/src/a64/utils-a64.h deleted file mode 100644 index 16c51a9c8b..0000000000 --- a/deps/v8/src/a64/utils-a64.h +++ /dev/null @@ -1,109 +0,0 @@ -// Copyright 2013 the V8 project authors. All rights reserved. -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following -// disclaimer in the documentation and/or other materials provided -// with the distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived -// from this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -#ifndef V8_A64_UTILS_A64_H_ -#define V8_A64_UTILS_A64_H_ - -#include <cmath> -#include "v8.h" -#include "a64/constants-a64.h" - -#define REGISTER_CODE_LIST(R) \ -R(0) R(1) R(2) R(3) R(4) R(5) R(6) R(7) \ -R(8) R(9) R(10) R(11) R(12) R(13) R(14) R(15) \ -R(16) R(17) R(18) R(19) R(20) R(21) R(22) R(23) \ -R(24) R(25) R(26) R(27) R(28) R(29) R(30) R(31) - -namespace v8 { -namespace internal { - -// Floating point representation. -static inline uint32_t float_to_rawbits(float value) { - uint32_t bits = 0; - memcpy(&bits, &value, 4); - return bits; -} - - -static inline uint64_t double_to_rawbits(double value) { - uint64_t bits = 0; - memcpy(&bits, &value, 8); - return bits; -} - - -static inline float rawbits_to_float(uint32_t bits) { - float value = 0.0; - memcpy(&value, &bits, 4); - return value; -} - - -static inline double rawbits_to_double(uint64_t bits) { - double value = 0.0; - memcpy(&value, &bits, 8); - return value; -} - - -// Bits counting. -int CountLeadingZeros(uint64_t value, int width); -int CountLeadingSignBits(int64_t value, int width); -int CountTrailingZeros(uint64_t value, int width); -int CountSetBits(uint64_t value, int width); -int MaskToBit(uint64_t mask); - - -// NaN tests. -inline bool IsSignallingNaN(double num) { - const uint64_t kFP64QuietNaNMask = 0x0008000000000000UL; - uint64_t raw = double_to_rawbits(num); - if (std::isnan(num) && ((raw & kFP64QuietNaNMask) == 0)) { - return true; - } - return false; -} - - -inline bool IsSignallingNaN(float num) { - const uint64_t kFP32QuietNaNMask = 0x00400000UL; - uint32_t raw = float_to_rawbits(num); - if (std::isnan(num) && ((raw & kFP32QuietNaNMask) == 0)) { - return true; - } - return false; -} - - -template <typename T> -inline bool IsQuietNaN(T num) { - return std::isnan(num) && !IsSignallingNaN(num); -} - -} } // namespace v8::internal - -#endif // V8_A64_UTILS_A64_H_ |