ninja win: Add msvs emulation for FloatingPointModel

pylib/gyp/msvs_emulation.py

 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """
 This module helps emulate Visual Studio 2008 behavior on top of other
 build systems, primarily ninja.
 """
 
 import os
@@ skipping 414 matching lines @@
                           'VCCLCompilerTool', append=cflags)
     cl('Optimization',
        map={'0': 'd', '1': '1', '2': '2', '3': 'x'}, prefix='/O', default='2')
     cl('InlineFunctionExpansion', prefix='/Ob')
     cl('DisableSpecificWarnings', prefix='/wd')
     cl('StringPooling', map={'true': '/GF'})
     cl('EnableFiberSafeOptimizations', map={'true': '/GT'})
     cl('OmitFramePointers', map={'false': '-', 'true': ''}, prefix='/Oy')
     cl('EnableIntrinsicFunctions', map={'false': '-', 'true': ''}, prefix='/Oi')
     cl('FavorSizeOrSpeed', map={'1': 't', '2': 's'}, prefix='/O')
+    cl('FloatingPointModel',
+        map={'0': 'precise', '1': 'strict', '2': 'fast'}, prefix='/fp:',
+        default='0')
     cl('WholeProgramOptimization', map={'true': '/GL'})
     cl('WarningLevel', prefix='/W')
     cl('WarnAsError', map={'true': '/WX'})
     cl('CallingConvention',
         map={'0': 'd', '1': 'r', '2': 'z'}, prefix='/G')
     cl('DebugInformationFormat',
         map={'1': '7', '3': 'i', '4': 'I'}, prefix='/Z')
     cl('RuntimeTypeInfo', map={'true': '/GR', 'false': '/GR-'})
     cl('EnableFunctionLevelLinking', map={'true': '/Gy', 'false': '/Gy-'})
     cl('MinimalRebuild', map={'true': '/Gm'})
@@ skipping 605 matching lines @@
 
   # To determine processor word size on Windows, in addition to checking
   # PROCESSOR_ARCHITECTURE (which reflects the word size of the current
   # process), it is also necessary to check PROCESSOR_ARCHITEW6432 (which
   # contains the actual word size of the system when running thru WOW64).
   if ('64' in os.environ.get('PROCESSOR_ARCHITECTURE', '') or
       '64' in os.environ.get('PROCESSOR_ARCHITEW6432', '')):
     default_variables['MSVS_OS_BITS'] = 64
   else:
     default_variables['MSVS_OS_BITS'] = 32