Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2024-11-01 12:26:32 +00:00
Code Issues Packages Projects Releases Wiki Activity
reactos/sdk/lib/crt/stdlib/rot.c

95 lines
2.5 KiB
C
Raw Normal View History

- Cleanup the /lib directory, by putting more 3rd-party libs in /3rdparty, and by creating a new directory called /sdk where libraries which emulate the ones in the WDK are present (Such as uuid, nt, crt, etc). - Removed lib/interlck and lib/string. - Removed math routines from lib/rtl. - Created a new library called libcntpr which is what NT/WDK use when compiling the kernel/system libraries. This is an "NT-Private" version of the CRT which is supposed to contain what we had in lib/string and lib/rtl. svn path=/trunk/; revision=26095
2007-03-14 20:24:57 +00:00
/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS system libraries
[CRT] Improve the FILE header section. Brought to you by Adam Stachowicz. CORE-10114 svn path=/trunk/; revision=69285
2015-09-19 13:50:57 +00:00
* FILE: lib/sdk/crt/stdlib/rot.c
- Cleanup the /lib directory, by putting more 3rd-party libs in /3rdparty, and by creating a new directory called /sdk where libraries which emulate the ones in the WDK are present (Such as uuid, nt, crt, etc). - Removed lib/interlck and lib/string. - Removed math routines from lib/rtl. - Created a new library called libcntpr which is what NT/WDK use when compiling the kernel/system libraries. This is an "NT-Private" version of the CRT which is supposed to contain what we had in lib/string and lib/rtl. svn path=/trunk/; revision=26095
2007-03-14 20:24:57 +00:00
* PURPOSE: Performs a bitwise rotation
* PROGRAMER: Ariadne
* UPDATE HISTORY:
* 03/04/99: Created
*/
#include <stdlib.h>
[CRT] Use alias names for rot functions when compiling with Clang-CL Clang-CL does not support #pragma function like CL. The alternative to this approach is to disable all intrinsics for this single source file, but that is not trivial to do, as it can only be done by removing a compiler switch, which we have no CMake support for. Therefore this solution is simpler and as good.
2019-02-03 22:36:49 +00:00
#ifdef __clang__
[CRT] Fix rot functions aliases in non-x86 clang builds
2021-04-09 12:59:33 +00:00
# define _rotl __function_rotl
# define _rotr __function_rotr
# define _lrotl __function_lrotl
# define _lrotr __function_lrotr
[CRT] Use alias names for rot functions when compiling with Clang-CL Clang-CL does not support #pragma function like CL. The alternative to this approach is to disable all intrinsics for this single source file, but that is not trivial to do, as it can only be done by removing a compiler switch, which we have no CMake support for. Therefore this solution is simpler and as good.
2019-02-03 22:36:49 +00:00
#elif defined(_MSC_VER)
[CRT] Fix rot functions aliases in non-x86 clang builds
2021-04-09 12:59:33 +00:00
# pragma function(_rotr, _rotl, _rotr, _lrotl, _lrotr)
Merge CRT changes from cmake branch (mainly MSVC compilation fixes) svn path=/trunk/; revision=50647
2011-02-10 11:35:05 +00:00
#endif
[CRT] Use ASM aliases for CLang builds
2020-11-09 11:54:06 +00:00
#if defined (__clang__) && !defined(_MSC_VER)
[CRT] Fix rot functions aliases in non-x86 clang builds
2021-04-09 12:59:33 +00:00
# ifdef _M_IX86
unsigned int _rotr( unsigned int value, int shift ) __asm__("__rotr");
unsigned long _lrotr(unsigned long value, int shift) __asm__("__lrotr");
unsigned int _rotl( unsigned int value, int shift ) __asm__("__rotl");
unsigned long _lrotl( unsigned long value, int shift ) __asm__("__lrotl");
# else
unsigned int _rotr( unsigned int value, int shift ) __asm__("_rotr");
unsigned long _lrotr(unsigned long value, int shift) __asm__("_lrotr");
unsigned int _rotl( unsigned int value, int shift ) __asm__("_rotl");
unsigned long _lrotl( unsigned long value, int shift ) __asm__("_lrotl");
# endif
[CRT] Properly declare rot functions in public headers
2021-04-09 13:12:13 +00:00
#else
unsigned int _rotr( unsigned int value, int shift );
unsigned long _lrotr(unsigned long value, int shift);
unsigned int _rotl( unsigned int value, int shift );
unsigned long _lrotl( unsigned long value, int shift );
[CRT] Use ASM aliases for CLang builds
2020-11-09 11:54:06 +00:00
#endif
- Cleanup the /lib directory, by putting more 3rd-party libs in /3rdparty, and by creating a new directory called /sdk where libraries which emulate the ones in the WDK are present (Such as uuid, nt, crt, etc). - Removed lib/interlck and lib/string. - Removed math routines from lib/rtl. - Created a new library called libcntpr which is what NT/WDK use when compiling the kernel/system libraries. This is an "NT-Private" version of the CRT which is supposed to contain what we had in lib/string and lib/rtl. svn path=/trunk/; revision=26095
2007-03-14 20:24:57 +00:00
/*
* @implemented
*/
unsigned int _rotl( unsigned int value, int shift )
{
int max_bits = sizeof(unsigned int)<<3;
if ( shift < 0 )
return _rotr(value,-shift);
if ( shift > max_bits )
shift = shift % max_bits;
return (value << shift) | (value >> (max_bits-shift));
}
/*
* @implemented
*/
unsigned int _rotr( unsigned int value, int shift )
{
int max_bits = sizeof(unsigned int)<<3;
if ( shift < 0 )
return _rotl(value,-shift);
[CRT] fix bug in _rotr implementation
2017-10-28 08:28:27 +00:00
if ( shift > max_bits )
- Cleanup the /lib directory, by putting more 3rd-party libs in /3rdparty, and by creating a new directory called /sdk where libraries which emulate the ones in the WDK are present (Such as uuid, nt, crt, etc). - Removed lib/interlck and lib/string. - Removed math routines from lib/rtl. - Created a new library called libcntpr which is what NT/WDK use when compiling the kernel/system libraries. This is an "NT-Private" version of the CRT which is supposed to contain what we had in lib/string and lib/rtl. svn path=/trunk/; revision=26095
2007-03-14 20:24:57 +00:00
shift = shift % max_bits;
return (value >> shift) | (value << (max_bits-shift));
}
/*
* @implemented
*/
unsigned long _lrotl( unsigned long value, int shift )
{
int max_bits = sizeof(unsigned long)<<3;
if ( shift < 0 )
return _lrotr(value,-shift);
if ( shift > max_bits )
shift = shift % max_bits;
return (value << shift) | (value >> (max_bits-shift));
}
/*
* @implemented
*/
unsigned long _lrotr( unsigned long value, int shift )
{
int max_bits = sizeof(unsigned long)<<3;
if ( shift < 0 )
return _lrotl(value,-shift);
if ( shift > max_bits )
shift = shift % max_bits;
return (value >> shift) | (value << (max_bits-shift));
}
Reference in a new issue Copy permalink