Fast algorithm for double->string conversion.

test/cctest/SConscript

 # Copyright 2008 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 24 matching lines @@
 SOURCES = {
   'all': [
     'test-accessors.cc',
     'test-alloc.cc',
     'test-api.cc',
     'test-ast.cc',
     'test-compiler.cc',
     'test-conversions.cc',
     'test-debug.cc',
     'test-decls.cc',
+    'test-diy_fp.cc',
+    'test-double.cc',
     'test-flags.cc',
     'test-func-name-inference.cc',
+    'test-grisu3.cc',
     'test-hashmap.cc',
     'test-heap.cc',
     'test-heap-profiler.cc',
     'test-list.cc',
     'test-lock.cc',
     'test-log.cc',
     'test-log-utils.cc',
     'test-mark-compact.cc',
     'test-parsing.cc',
     'test-regexp.cc',
@@ skipping 33 matching lines @@
   context.ApplyEnvOverrides(env)
   # There seems to be a glitch in the way scons decides where to put
   # PDB files when compiling using MSVC so we specify it manually.
   # This should not affect any other platforms.
   return env.Program('cctest', ['cctest.cc', cctest_files, object_files],
       PDB='cctest.exe.pdb')
 
 
 program = Build()
 Return('program')