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Additional `FT_MSB` macro definitions. 

Better macros for Windoes CE and ARM in general, based on !109
from metarutaiga.

* include/freetype/internal/ftcalc.h [_MSC_VER] (FT_MSB): Updated.
This commit is contained in:
Alexei Podtelezhnikov 2021-11-09 22:47:26 -05:00
parent 05089e8a07
commit 188c7d6670
1 changed files with 17 additions and 3 deletions
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20
include/freetype/internal/ftcalc.h
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@ -372,9 +372,23 @@ FT_BEGIN_HEADER
#endif
#elif defined( _MSC_VER ) && ( _MSC_VER >= 1400 )
#elif defined( _MSC_VER ) && _MSC_VER >= 1400
#if FT_SIZEOF_INT == 4
#if defined( _WIN32_WCE )
#include <cmnintrin.h>
#pragma intrinsic( _CountLeadingZeros )
#define FT_MSB( x ) ( 31 - _CountLeadingZeros( x ) )
#elif defined( _M_ARM64 ) || defined( _M_ARM )
#include <intrin.h>
#pragma intrinsic( _CountLeadingZeros )
#define FT_MSB( x ) ( 31 - _CountLeadingZeros( x ) )
#elif defined( _M_IX86 ) || defined( _M_AMD64 ) || defined( _M_IA64 )
#include <intrin.h>
#pragma intrinsic( _BitScanReverse )
@ -390,7 +404,7 @@ FT_BEGIN_HEADER
return (FT_Int32)where;
}
#define FT_MSB( x ) ( FT_MSB_i386( x ) )
#define FT_MSB( x ) FT_MSB_i386( x )
#endif