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Issue 9583037: Reland r10908 (Ensure consistent result of transcendental function0.) (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 8 years, 9 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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46 46
47 #undef MAP_TYPE 47 #undef MAP_TYPE
48 48
49 #if defined(ANDROID) && !defined(V8_ANDROID_LOG_STDOUT) 49 #if defined(ANDROID) && !defined(V8_ANDROID_LOG_STDOUT)
50 #define LOG_TAG "v8" 50 #define LOG_TAG "v8"
51 #include <android/log.h> 51 #include <android/log.h>
52 #endif 52 #endif
53 53
54 #include "v8.h" 54 #include "v8.h"
55 55
56 #include "codegen.h"
56 #include "platform.h" 57 #include "platform.h"
57 58
58 namespace v8 { 59 namespace v8 {
59 namespace internal { 60 namespace internal {
60 61
61 62
62 // Maximum size of the virtual memory. 0 means there is no artificial 63 // Maximum size of the virtual memory. 0 means there is no artificial
63 // limit. 64 // limit.
64 65
65 intptr_t OS::MaxVirtualMemory() { 66 intptr_t OS::MaxVirtualMemory() {
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119 120
120 121
121 // ---------------------------------------------------------------------------- 122 // ----------------------------------------------------------------------------
122 // Math functions 123 // Math functions
123 124
124 double modulo(double x, double y) { 125 double modulo(double x, double y) {
125 return fmod(x, y); 126 return fmod(x, y);
126 } 127 }
127 128
128 129
130 static Mutex* transcendental_function_mutex = OS::CreateMutex();
131
132 #define TRANSCENDENTAL_FUNCTION(name, type) \
133 static TranscendentalFunction fast_##name##_function = NULL; \
134 double fast_##name(double x) { \
135 if (fast_##name##_function == NULL) { \
136 ScopedLock lock(transcendental_function_mutex); \
137 TranscendentalFunction temp = \
138 CreateTranscendentalFunction(type); \
139 MemoryBarrier(); \
140 fast_##name##_function = temp; \
141 } \
142 return (*fast_##name##_function)(x); \
143 }
144
145 TRANSCENDENTAL_FUNCTION(sin, TranscendentalCache::SIN)
146 TRANSCENDENTAL_FUNCTION(cos, TranscendentalCache::COS)
147 TRANSCENDENTAL_FUNCTION(tan, TranscendentalCache::TAN)
148 TRANSCENDENTAL_FUNCTION(log, TranscendentalCache::LOG)
149
150 #undef TRANSCENDENTAL_FUNCTION
151
152
129 double OS::nan_value() { 153 double OS::nan_value() {
130 // NAN from math.h is defined in C99 and not in POSIX. 154 // NAN from math.h is defined in C99 and not in POSIX.
131 return NAN; 155 return NAN;
132 } 156 }
133 157
134 158
135 // ---------------------------------------------------------------------------- 159 // ----------------------------------------------------------------------------
136 // POSIX date/time support. 160 // POSIX date/time support.
137 // 161 //
138 162
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491 return ntohl(value); 515 return ntohl(value);
492 } 516 }
493 517
494 518
495 Socket* OS::CreateSocket() { 519 Socket* OS::CreateSocket() {
496 return new POSIXSocket(); 520 return new POSIXSocket();
497 } 521 }
498 522
499 523
500 } } // namespace v8::internal 524 } } // namespace v8::internal
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