Harmony: move implementation of Math.log1p and Math.expm1 to Javascript.

src/runtime.h

 // Copyright 2012 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
@@ skipping 161 matching lines @@
   F(NumberCompare, 3, 1) \
   F(SmiLexicographicCompare, 2, 1) \
   F(StringCompare, 2, 1) \
   \
   /* Math */ \
   F(Math_acos, 1, 1) \
   F(Math_asin, 1, 1) \
   F(Math_atan, 1, 1) \
   F(Math_log, 1, 1) \
   F(Math_cbrt, 1, 1) \
-  F(Math_log1p, 1, 1) \
-  F(Math_expm1, 1, 1) \
   F(Math_sqrt, 1, 1) \
   F(Math_exp, 1, 1) \
   F(Math_floor, 1, 1) \
   F(Math_pow, 2, 1) \
   F(Math_pow_cfunction, 2, 1) \
   F(Math_atan2, 2, 1) \
   F(RoundNumber, 1, 1) \
   F(Math_fround, 1, 1) \
   \
   /* Regular expressions */ \
@@ skipping 679 matching lines @@
 class AllocateDoubleAlignFlag:    public BitField<bool,            0, 1> {};
 class AllocateTargetSpace:        public BitField<AllocationSpace, 1, 3> {};
 
 class DeclareGlobalsEvalFlag:     public BitField<bool,         0, 1> {};
 class DeclareGlobalsNativeFlag:   public BitField<bool,         1, 1> {};
 class DeclareGlobalsLanguageMode: public BitField<LanguageMode, 2, 2> {};
 
 } }  // namespace v8::internal
 
 #endif  // V8_RUNTIME_H_