Fast algorithm for double->string conversion.

src/globals.h

 // Copyright 2006-2009 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 80 matching lines @@
 #define V8_PTR_PREFIX "ll"
 #else  // _MSC_VER
 #define V8_UINT64_C(x)  (x ## UL)
 #define V8_INT64_C(x)   (x ## L)
 #define V8_PTR_PREFIX "l"
 #endif  // _MSC_VER
 #else  // V8_HOST_ARCH_64_BIT
 #define V8_PTR_PREFIX ""
 #endif  // V8_HOST_ARCH_64_BIT
 
+// The following macro works on both 32 and 64-bit platforms.
+// Usage: instead of writing 0x1234567890123456
+//      write GRISU_UINT64_C(0x12345678,90123456);

[Lasse Reichstein, 2010/02/22 11:31:36]

GRISU -> V8_2PART

[Florian Loitsch, 2010/02/22 15:52:53]

Done.

[floitsch, 2012/04/10 15:54:34]

Done.

+#define V8_2PART_UINT64_C(a, b)  (((static_cast<uint64_t>(a) << 32) + 0x ## b))

[Lasse Reichstein, 2010/02/22 11:31:36]

Put a "## u" after the b to make it an unsigned constant. Just to be safe.

[Florian Loitsch, 2010/02/22 15:52:53]

Done.

[floitsch, 2012/04/10 15:54:34]

Done.

+
 #define V8PRIxPTR V8_PTR_PREFIX "x"
 #define V8PRIdPTR V8_PTR_PREFIX "d"
 
 // Fix for Mac OS X defining uintptr_t as "unsigned long":
 #if defined(__APPLE__) && defined(__MACH__)
 #undef V8PRIxPTR
 #define V8PRIxPTR "lx"
 #endif
 
 #if defined(__APPLE__) && defined(__MACH__)
@@ skipping 500 matching lines @@
                   CMOV = 15,   // x86
                   RDTSC = 4,   // x86
                   CPUID = 10,  // x86
                   VFP3 = 1,    // ARM
                   ARMv7 = 2,   // ARM
                   SAHF = 0};   // x86
 
 } }  // namespace v8::internal
 
 #endif  // V8_GLOBALS_H_