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Add support for MSVC

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Tested with MSVC 8 32 and 64 bits.
This commit is contained in:
Mike Hommey 2012-04-30 12:38:31 +02:00 • committed by Jason Evans
parent b45c57ecaf
commit fd97b1dfc7
11 changed files with 177 additions and 15 deletions
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23
include/msvc_compat/strings.h Normal file
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@ -0,0 +1,23 @@
#ifndef strings_h
#define strings_h
/* MSVC doesn't define ffs/ffsl. This dummy strings.h header is provided
* for both */
#include <intrin.h>
#pragma intrinsic(_BitScanForward)
static __forceinline int ffsl(long x)
{
unsigned long i;
if (_BitScanForward(&i, x))
return (i + 1);
return (0);
}
static __forceinline int ffs(int x)
{
return (ffsl(x));
}
#endif