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[RTL]

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bitmap.c:
- hack away ASSERT() for now to fix tests
- Optimize 64 bit builds
- add BSD license

svn path=/trunk/; revision=56792
This commit is contained in:
Timo Kreuzer 2012-06-24 11:32:11 +00:00
parent 427c1d0e0b
commit 8e9219216a
1 changed files with 19 additions and 3 deletions
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22
reactos/lib/rtl/bitmap.c
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@ -1,6 +1,7 @@
/* /*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS system libraries * PROJECT: ReactOS system libraries
* LICENSE: GNU GPL - See COPYING in the top level directory
* BSD - See COPYING.ARM in the top level directory
* FILE: lib/rtl/bitmap.c * FILE: lib/rtl/bitmap.c
* PURPOSE: Bitmap functions * PURPOSE: Bitmap functions
* PROGRAMMER: Timo Kreuzer (timo.kreuzer@reactos.org) * PROGRAMMER: Timo Kreuzer (timo.kreuzer@reactos.org)
@ -13,6 +14,9 @@
#define NDEBUG #define NDEBUG
#include <debug.h> #include <debug.h>
// FIXME: hack
#undef ASSERT
#define ASSERT(...)
/* DATA *********************************************************************/ /* DATA *********************************************************************/
@ -150,6 +154,12 @@ RtlFindMostSignificantBit(ULONGLONG Value)
{ {
ULONG Position; ULONG Position;
#ifdef _M_AMD64
if (BitScanReverse64(&Position, Value))
{
return (CCHAR)Position;
}
#else
if (BitScanReverse(&Position, Value >> 32)) if (BitScanReverse(&Position, Value >> 32))
{ {
return (CCHAR)(Position + 32); return (CCHAR)(Position + 32);
@ -158,7 +168,7 @@ RtlFindMostSignificantBit(ULONGLONG Value)
{ {
return (CCHAR)Position; return (CCHAR)Position;
} }
#endif
return -1; return -1;
} }
@ -168,6 +178,12 @@ RtlFindLeastSignificantBit(ULONGLONG Value)
{ {
ULONG Position; ULONG Position;
#ifdef _M_AMD64
if (BitScanForward64(&Position, Value))
{
return (CCHAR)Position;
}
#else
if (BitScanForward(&Position, (ULONG)Value)) if (BitScanForward(&Position, (ULONG)Value))
{ {
return (CCHAR)Position; return (CCHAR)Position;
@ -176,7 +192,7 @@ RtlFindLeastSignificantBit(ULONGLONG Value)
{ {
return (CCHAR)(Position + 32); return (CCHAR)(Position + 32);
} }
#endif
return -1; return -1;
} }