Torque2D/engine/source/platformiOS/iOSMath.mm

//-----------------------------------------------------------------------------
// Copyright (c) 2013 GarageGames, LLC
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//-----------------------------------------------------------------------------

#include "platformiOS/platformiOS.h"
#include "platform/platform.h"
#include "console/console.h"
#include "math/mMath.h"

extern void mInstallLibrary_C();
extern void mInstallLibrary_Vec();


//--------------------------------------
ConsoleFunction( MathInit, void, 1, 10, "(DETECT|C|VEC)")
{
   U32 properties = CPU_PROP_C;  // C entensions are always used
   
   if (argc == 1)
   {
         Math::init(0);
         return;
   }
   for (argc--, argv++; argc; argc--, argv++)
   {
      if (dStricmp(*argv, "DETECT") == 0) { 
         Math::init(0);
         return;
      }
      if (dStricmp(*argv, "C") == 0) { 
         properties |= CPU_PROP_C; 
         continue; 
      }
      if (dStricmp(*argv, "VEC") == 0) { 
         properties |= CPU_PROP_ALTIVEC; 
         continue; 
      }
      Con::printf("Error: MathInit(): ignoring unknown math extension '%s'", *argv);
   }
   Math::init(properties);
}



//------------------------------------------------------------------------------
void Math::init(U32 properties)
{
   if (!properties)
      // detect what's available
      properties = PlatformSystemInfo.processor.properties;  
   else
      // Make sure we're not asking for anything that's not supported
      properties &= PlatformSystemInfo.processor.properties;  

   Con::printf("Math Init:");
   Con::printf("   Installing Standard C extensions");
   mInstallLibrary_C();
   
   #if defined(__VEC__)
   if (properties & CPU_PROP_ALTIVEC)
   {
      Con::printf("   Installing Altivec extensions");
      mInstallLibrary_Vec();
   }
   #endif
   Con::printf(" ");
}   

//------------------------------------------------------------------------------
F32 Platform::getRandom()
{
   return platState.platRandom.randF();
}