Move generated math methods from platform to codegen

src/platform-posix.cc

Index: src/platform-posix.cc
diff --git a/src/platform-posix.cc b/src/platform-posix.cc
index 6375fddc8e4e881b070ac86d4f52ef800ebf2095..143bf3ca105c2a32ac7d340a24192d6525ca82d2 100644
--- a/src/platform-posix.cc
+++ b/src/platform-posix.cc
@@ -43,7 +43,6 @@
 
 #include "v8.h"
 
-#include "codegen.h"
 #include "isolate-inl.h"
 #include "platform.h"
 
@@ -285,33 +284,6 @@ void OS::DebugBreak() {
 // ----------------------------------------------------------------------------
 // Math functions
 
-double modulo(double x, double y) {
-  return std::fmod(x, y);
-}
-
-
-#define UNARY_MATH_FUNCTION(name, generator)             \
-static UnaryMathFunction fast_##name##_function = NULL;  \
-void init_fast_##name##_function() {                     \
-  fast_##name##_function = generator;                    \
-}                                                        \
-double fast_##name(double x) {                           \
-  return (*fast_##name##_function)(x);                   \
-}
-
-UNARY_MATH_FUNCTION(exp, CreateExpFunction())
-UNARY_MATH_FUNCTION(sqrt, CreateSqrtFunction())
-
-#undef UNARY_MATH_FUNCTION
-
-
-void lazily_initialize_fast_exp() {
-  if (fast_exp_function == NULL) {
-    init_fast_exp_function();
-  }
-}
-
-
 double OS::nan_value() {
   // NAN from math.h is defined in C99 and not in POSIX.
   return NAN;
@@ -541,8 +513,6 @@ void OS::PostSetUp() {
   OS::memcopy_uint8_function =
       CreateMemCopyUint8Function(&OS::MemCopyUint8Wrapper);
 #endif
-  // fast_exp is initialized lazily.
-  init_fast_sqrt_function();
 }