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bitscan.h
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bitscan.h
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/****************************************************************************
*
* bitscan.h Portable BitScan implementation (MSC, ICL, GNUC, etc.
* for WIN32/IA32/Intel64/ARM only)
*
*****************************************************************************
* Copyright (c) 2019 by Alexander M. Albertian <assa@4ip.ru>.
* All rights reserved.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
****************************************************************************/
#ifndef _ASSA_BITSCAN_H_INCLUDED
#define _ASSA_BITSCAN_H_INCLUDED
/*
* Detecting C++ version and whether exceptions are enabled
*/
#ifdef _IS_CPP98
# undef _IS_CPP98
#endif
#ifdef _IS_CPP03
# undef _IS_CPP03
#endif
#ifdef _IS_CPP11
# undef _IS_CPP11
#endif
#ifdef _IS_CPP14
# undef _IS_CPP14
#endif
#ifdef _IS_CPP17
# undef _IS_CPP17
#endif
#ifdef _IS_NOTHROW
# undef _IS_NOTHROW
#endif
#ifdef _IS_NOTHROWC
# undef _IS_NOTHROWC
#endif
#if defined( __cplusplus__ ) && !defined( __cplusplus )
# define __cplusplus __cplusplus__
#elif !defined( __cplusplus__ ) && defined( __cplusplus )
# define __cplusplus__ __cplusplus
#endif
#ifdef __cplusplus
# if __cplusplus >= 199711L
# define _IS_CPP98 1
# define _IS_CPP03 1
# endif
# if __cplusplus >= 201103L ||\
defined( __cpp_constexpr ) && defined( __cpp_decltype ) &&\
defined( __cpp_rvalue_references ) && defined( __cpp_variadic_templates ) &&\
defined( __cpp_lambdas ) && defined( __cpp_unicode_characters ) ||\
defined( _MSC_VER ) && _MSC_VER >= 1900
# define _IS_CPP11 1
# endif
# if __cplusplus >= 201402L
# define _IS_CPP14 1
# endif
# if __cplusplus >= 201703L
# define _IS_CPP17 1
# endif
# if defined( __CPPUNWIND ) && !defined( _CPPUNWIND )
# define _CPPUNWIND __CPPUNWIND
# elif !defined( __CPPUNWIND ) && defined( _CPPUNWIND )
# define __CPPUNWIND _CPPUNWIND
# endif
# if defined( _CPPUNWIND ) && !defined( __EXCEPTIONS )
# define __EXCEPTIONS _CPPUNWIND
# endif
# if defined( __cpp_exceptions ) && !defined( __EXCEPTIONS )
# define __EXCEPTIONS __cpp_exceptions
# endif
# if defined( __EXCEPTIONS ) && !defined( _EXCEPTIONS )
# define _EXCEPTIONS __EXCEPTIONS
# elif !defined( __EXCEPTIONS ) && defined( _EXCEPTIONS )
# define __EXCEPTIONS _EXCEPTIONS
# endif
# if defined( _IS_CPP11 ) && defined( __EXCEPTIONS )
# define _IS_NOTHROW noexcept
# define _IS_NOTHROWC( ... ) noexcept( __VA_ARGS__ )
# elif defined( __EXCEPTIONS )
# define _IS_NOTHROW throw( )
# define _IS_NOTHROWC( __e )
# else
# define _IS_NOTHROW
# define _IS_NOTHROWC( __e )
# endif
#else /* !__cplusplus */
# define _IS_NOTHROW
# define _IS_NOTHROWC( __e )
#endif /* __cplusplus */
/*
* C99 or OpenWatcom 1.5 (long long support, ... (1.2), new headers, inline
* keyword, ... (1.3), Exit( ), new printf format specifiers, ... (1.5))
*/
#ifdef _IS_C99
# undef _IS_C99
#endif
#ifdef _IS_C10
# undef _IS_C10
#endif
#ifdef _IS_C11
# undef _IS_C11
#endif
#if defined( __STDC_VERSION__ ) && __STDC_VERSION__ >= 199901L ||\
!defined( __cplusplus ) && defined( __WATCOMC__ ) && __WATCOMC__ >= 1250
# define _IS_C99 1
# ifndef __STDC_WANT_LIB_EXT1__
# define __STDC_WANT_LIB_EXT1__ 1
# endif
#endif
#if defined( __STDC_VERSION__ ) && __STDC_VERSION__ >= 201000L
# define _IS_C10 1
#endif
#if defined( __STDC_VERSION__ ) && __STDC_VERSION__ >= 201112L
# define _IS_C11 1
#endif
/*
* Normalization of predefined macros
*/
/* _WIN64 */
#ifndef _WIN64
# ifdef WIN64
# define _WIN64 WIN64
# elif defined( __WIN64 )
# define _WIN64 __WIN64
# elif defined( __WIN64__ )
# define _WIN64 __WIN64__
# elif defined( __MINGW64__ )
# define _WIN64 __MINGW64__
# endif
#endif
#if defined( _WIN64 ) && !defined( WIN64 )
# define WIN64 _WIN64
#endif
/* Intel compiler definitions */
#ifndef __INTEL_COMPILER
# ifdef __ICL
# define __INTEL_COMPILER __ICL
# elif defined( __ICL__ )
# define __INTEL_COMPILER __ICL__
# elif defined( __ICC )
# define __INTEL_COMPILER __ICC
# endif
#endif
#if defined( __INTEL_COMPILER ) && !defined( __ICL )
# define __ICL __INTEL_COMPILER
#endif
#if defined( __INTEL_COMPILER ) && !defined( __ICL__ )
# define __ICL__ __INTEL_COMPILER
#endif
#if defined( __INTEL_COMPILER ) && !defined( __ICC )
# define __ICC __INTEL_COMPILER
#endif
#if defined( __CYGWIN64__ ) && !defined( __CYGWIN__ )
# define __CYGWIN__ __CYGWIN64__
#endif
#if defined( __CYGWIN32__ ) && !defined( __CYGWIN__ )
# define __CYGWIN__ __CYGWIN32__
#endif
#if defined( __MINGW64__ ) && !defined( __MINGW__ )
# define __MINGW__ __MINGW64__
#endif
#if defined( __MINGW32__ ) && !defined( __MINGW__ )
# define __MINGW__ __MINGW32__
#endif
#if ( defined( __powerpc__ ) || defined( __powerpc ) || defined( __POWERPC__ ) ||\
defined( __ppc ) || defined( __PPC__ ) || defined( __PPC ) || defined( __ppc__ ) ||\
defined( _MPPC_ ) || defined( _M_MPPC ) || defined( _ARCH_PPC ) ) && !defined( _M_PPC )
# define _M_PPC 1
#endif
#if ( defined( __PPC64__ ) || defined( __ppc64 ) || defined( _M_PPC64 ) ) && !defined( __ppc64__ )
# define __ppc64__ 1
#endif
#if defined( __ppc64__ ) && !defined( _M_PPC64 )
# define _M_PPC64 __ppc64__
#endif
#if ( defined( __alpha ) || defined( __ALPHA__ ) || defined( __alpha__ ) ||\
defined( __axp ) || defined( __axp__ ) || defined( __AXP__ ) ) &&\
!defined( _M_ALPHA )
# define _M_ALPHA 1
#endif
#if ( defined( __m68k__ ) || defined( __m68000__ ) || defined( __mc68000__ ) ||\
defined( __mc68010__ ) || defined( __mc68020__ ) || defined( __mc68030__ ) ||\
defined( __mc68040__ ) || defined( __mc68060__ ) || defined( _68K_ ) ||\
defined( M68000 ) ) && !defined( _M_M68K )
# define _M_M68K 1
#endif
#if defined( _M_M68K ) && !defined( _68K_ )
# define _68K_ _M_M68K
#endif
#if ( defined( __itanium__ ) || defined( __ia64__ ) || defined( __ia64 ) || defined( _IA64 ) ||\
defined( __IA64__ ) ) && !defined( _M_IA64 )
# define _M_IA64 1
#endif
#if ( defined( __amd64__ ) || defined( __amd64 ) || defined( __x86_64__ ) || defined( __x86_64 ) ||\
defined( _AMD64_ ) || defined( _M_AMD64 ) || defined( M_X64 ) ) && !defined( _M_X64 )
# ifdef _M_AMD64
# define _M_X64 _M_AMD64
# elif defined( M_X64 )
# define _M_X64 M_X64
# else
# define _M_X64 100
# endif
#endif
#if defined( _M_X64 ) && !defined( _M_AMD64 )
# define _M_AMD64 _M_X64
#endif
#ifndef _M_ARM
# ifdef __ARM_ARCH
# define _M_ARM __ARM_ARCH
# elif defined( __TARGET_ARCH_ARM )
# define _M_ARM __TARGET_ARCH_ARM
# elif defined( __TARGET_ARCH_THUMB ) && __TARGET_ARCH_THUMB >= 4
# define _M_ARM 7
# elif defined( __ARM_ARCH_ISA_THUMB ) && __ARM_ARCH_ISA_THUMB >= 2
# define _M_ARM 7
# elif defined( __thumb2__ ) || defined( __thumb2 ) || defined( thumb2 )
# define _M_ARM 7
# elif defined( __thumb__ ) || defined( __thumb ) || defined( __TARGET_ARCH_THUMB ) ||\
defined( __ARM_ARCH_ISA_THUMB )
# define _M_ARM 1
# elif defined( __arm__ )
# define _M_ARM 1
# elif defined( __arm )
# define _M_ARM 1
# elif defined( arm )
# define _M_ARM 1
# elif defined( _ARM_ )
# define _M_ARM 1
# elif defined( ARM )
# define _M_ARM 1
# endif
#endif
#if defined( __aarch64 ) && !defined( __aarch64__ )
# defined __aarch64__ __aarch64
#endif
#if defined( __aarch64__ ) && !defined( _M_ARM64 )
# define _M_ARM64 __aarch64__
#endif
#if defined( _M_ARM64 ) && !defined( _M_ARM )
# define _M_ARM 8
#endif
#if ( defined( __DJGPP__ ) || defined( __EMX__ ) || defined( __CYGWIN__ ) ||\
defined( __MINGW__ ) ) && !defined( __GNUC__ )
# define __GNUC__ 0
#endif
/****************************************************************************
* Macro definitions for debugging
*/
#if __LINE__ + 0 == 0
# ifndef __LINE__
# define __LINE__ 0
# endif
# ifndef __FILE__
# define __FILE__ ""
# endif
#endif
#ifdef ToStr
# undef ToStr
#endif
#ifdef _ToStr
# undef _ToStr
#endif
#define ToStr( s ) _ToStr( s )
#define _ToStr( s ) #s
#ifndef _IsLocation
# ifdef _tIsLocation
# undef _tIsLocation
# endif
# ifdef IsLocation
# undef IsLocation
# endif
# ifdef tIsLocation
# undef tIsLocation
# endif
# define _IsLocation __FILE__ "(" ToStr( __LINE__ ) "): "
# define _tIsLocation _T( __FILE__ ) _T( "(" ) _T( ToStr( __LINE__ ) ) _T( "): " )
# define IsLocation _IsLocation
# define tIsLocation _tIsLocation
#endif
#ifndef _IS_LOCATION
# ifdef _IS_2STR
# undef _IS_2STR
# endif
# ifdef _IS_2STR_
# undef _IS_2STR_
# endif
# ifdef _IS_LOCATION_
# undef _IS_LOCATION_
# endif
# ifdef _IS_LOCATIONP
# undef _IS_LOCATIONP
# endif
# define _IS_2STR( x ) #x
# define _IS_2STR_( x ) _IS_2STR( x )
# define _IS_LOCATION _IsLocation
# define _IS_LOCATION_ _IsLocation
# define _IS_LOCATIONP _IsLocation
#endif
/*
* _STATIC_ASSERT( ) macro: Static assertion implementation
*/
#ifdef _ASSERT_CONCAT_
# undef _ASSERT_CONCAT_
#endif
#ifdef _ASSERT_CONCAT
# undef _ASSERT_CONCAT
#endif
#define _ASSERT_CONCAT_( __a, __b ) __a##__b
#define _ASSERT_CONCAT( __a, __b ) _ASSERT_CONCAT_( __a, __b )
#ifdef _STATIC_ASSERT
# undef _STATIC_ASSERT
#endif
#ifdef _STATIC_ASSERTE
# undef _STATIC_ASSERTE
#endif
#define _STATIC_ASSERTE( __c, __m ) typedef int __static_assert[ 1 - 2 * !( __c ) ]
#define _STATIC_ASSERT( __c ) _STATIC_ASSERTE( __c, "*** FATAL: ASSERTION FAILED!!!" )
#ifdef _IS_INTEGRAL
# undef _IS_INTEGRAL
#endif
#define _IS_INTEGRAL( __t, __m ) typedef int __is_integral_assert[ ( __t )1 | ( __t )1 ]
/****************************************************************************
* Detecting C compiler capabilities...
*/
#ifndef _ISOC95_SOURCE
# define _ISOC95_SOURCE 1
#endif
#ifndef _ISOC99_SOURCE
# define _ISOC99_SOURCE 1
#endif
#ifndef _ISOC11_SOURCE
# define _ISOC11_SOURCE 1
#endif
#ifndef _POSIX_SOURCE
# define _POSIX_SOURCE 1
#endif
#ifndef _POSIX_C_SOURCE
# define _POSIX_C_SOURCE 200809L
#endif
#ifndef _GNU_SOURCE
# define _GNU_SOURCE 1
#endif
#ifdef _IS_NEW_HEADERS
# undef _IS_NEW_HEADERS
#endif
#ifdef _IS_STD
# undef _IS_STD
#endif
#ifdef _IS_ERRORLOG_H
# undef _IS_ERRORLOG_H
#endif
#ifdef _IS_STDINT_H
# undef _IS_STDINT_H
#endif
#ifdef _IS_UCHAR_H
# undef _IS_UCHAR_H
#endif
#ifdef _IS_INTPTR
# undef _IS_INTPTR
#endif
#if defined( __cplusplus ) && (\
defined( _IS_CPP98 ) /* C++ standard >= 1998 (doesn't work properly with some MINGW) or */\
&& !defined( __BORLANDC__ ) && !defined( __DMC__ ) /* wtf Borland C++ ???, Digital Mars C++ */\
&& !defined( _MSC_VER ) && !defined( __WATCOMC__ ) /* wtf Borland C++ ???, Digital Mars C++ */\
|| defined( _MSC_VER ) && _MSC_VER >= 1310 /* Visual C++ >= .NET (7.1) or */\
|| defined( __WATCOMC__ ) && __WATCOMC__ >= 1240 /* OpenWatcom >= 1.4 (or 1.3? - w/o new) or */\
)
# define _IS_NEW_HEADERS 1
# define _IS_STD std::
#else
# define _IS_STD
#endif
#if defined( _IS_C99 ) || defined( _IS_CPP98 ) ||\
defined( __WATCOMC__ ) && __WATCOMC__ >= 1230 ||\
defined( _MSC_VER ) && _MSC_VER >= 1600 ||\
defined( __DMC__ )
# ifndef __STDC_LIMIT_MACROS
# define __STDC_LIMIT_MACROS
# endif
# ifndef __STDC_CONSTANT_MACROS
# define __STDC_CONSTANT_MACROS
# endif
# ifdef _IS_C99
# include <stdbool.h>
# endif
# ifdef _IS_NEW_HEADERS
# if defined( _IS_CPP11 ) ||\
defined( __WATCOMC__ ) && __WATCOMC__ >= 1280 ||\
defined( _MSC_VER ) && _MSC_VER >= 1600
# include <cstdint>
# endif
# include <ciso646>
# include <cwctype>
# if defined( _IS_CPP11 ) && !defined( __MIC__ )
# define _IS_UCHAR_H 1
# include <cuchar>
# endif
# else
# include <iso646.h>
# include <wctype.h>
# ifdef _IS_C10
# define _IS_UCHAR_H 1
# include <uchar.h>
# endif
# endif
# define _IS_STDINT_H 1
# include <stdint.h>
# include <inttypes.h>
# if !defined( _IS_NO_INTPTR ) && defined( INTPTR_MAX ) && defined( UINTPTR_MAX )
# if /*defined( __WATCOMC__ ) && */defined( _DEBUG )
# ifdef __GNUC__
# pragma message "*** INFO: Assume that [u]intptr_t types are present"
# else
# pragma message( _IS_LOCATIONP "*** INFO: Assume that [u]intptr_t types are present" )
# endif
# endif
# define _IS_INTPTR 1
# endif
#else
# ifdef __STDC_LIMIT_MACROS
# undef __STDC_LIMIT_MACROS
# endif
#endif
/* get off annoying min/max macros */
#ifdef __cplusplus
# ifdef NOMINMAX
# undef NOMINMAX
# endif
# define NOMINMAX /* for WINDEF.H */
# ifdef min
# undef min
# endif
# ifdef max
# undef max
# endif
#endif
#ifdef EXTERNC
# undef EXTERNC
#endif
#ifdef _IS_EXTERNC_BEGIN
# undef _IS_EXTERNC_BEGIN
#endif
#ifdef _IS_EXTERNC_END
# undef _IS_EXTERNC_END
#endif
#ifdef __cplusplus
# define EXTERNC extern "C"
# define _IS_EXTERNC_BEGIN extern "C" {
# define _IS_EXTERNC_END }
#else
# define EXTERNC
# define _IS_EXTERNC_BEGIN
# define _IS_EXTERNC_END
#endif
#ifndef __STDC_LIMIT_MACROS
# error "*** FATAL: stdint.h/cstdint is required for now!"
#endif
/****************************************************************************
* Detecting target Architecture... (Simplified!!!)
*/
#ifdef _IS_386
# undef _IS_386
#endif
#ifdef _IS_X64
# undef _IS_X64
#endif
#ifdef _IS_ARM64
# undef _IS_ARM64
#endif
#ifdef _IS_ARM
# undef _IS_ARM
#endif
#ifdef _IS_THUMB
# undef _IS_THUMB
#endif
#ifdef _IS_IN_THUMB
# undef _IS_IN_THUMB
#endif
#ifdef _IS_NEON
# undef _IS_NEON
#endif
#ifdef _M_X64
# define _IS_X64 1
# ifdef _IS_X86
# undef _IS_X86
# endif
# ifdef M_IX86
# undef M_IX86
# endif
# ifdef _M_IX86
# undef _M_IX86
# endif
# ifndef M_X64
# define M_X64 _M_X64
# endif
# ifndef _M_X64
# define _M_X64 M_X64
# endif
#elif defined( __386__ ) || defined( _I386 ) || defined( __i386__ ) || defined( __i386 ) || \
defined( _M_I386 ) || defined( M_I386 ) || defined( DOS386 ) || \
defined( __i486__ ) || defined( __i586__ ) || defined( __i686__ ) || \
defined( __FLAT__ ) || ( defined( _M_IX86 ) && _M_IX86 >= 300 ) || \
( defined( __I86__ ) && __I86__ >= 3 )
# define _IS_386 1
# ifndef _IS_X86
# define _IS_X86 1
# endif
# ifndef M_IX86
# ifdef _M_IX86
# define M_IX86 _M_IX86
# else
/*# define M_IX86 300*/
# define M_IX86 600
# endif
# endif
# ifndef _M_IX86
# define _M_IX86 M_IX86
# endif
#else
# if defined( _M_ARMT ) || defined( __thumb__ ) || defined( __thumb ) \
|| defined( __thumb2__ ) || defined( __thumb2 ) || defined( thumb2 )
# define _IS_IN_THUMB 1
# endif
# ifdef _M_ARM64
# define _IS_ARM64 1
# endif
# if defined( __ARM_ARCH_8M__ ) \
|| defined( __ARM_ARCH_8M_BASE__ ) \
|| defined( __ARM_ARCH_8M_MAIN__ ) \
|| defined( __ARM_ARCH_8M ) \
|| defined( __ARM_ARCH_8M_BASE ) \
|| defined( __ARM_ARCH_8M_MAIN ) \
|| defined( __ARM_ARCH_7M__ ) \
|| defined( __ARM_ARCH_7EM__ ) \
|| defined( __ARM_ARCH_6M__ ) \
|| defined( __ARM_ARCH_6SM__ )
# define _IS_ARM 0
# elif defined( __ARM_ARCH_8__ ) \
|| defined( __ARM_ARCH_8A__ ) \
|| defined( __ARM_ARCH_8R__ ) \
|| defined( __ARM_ARCH_8 ) \
|| defined( __ARM_ARCH_8A ) \
|| defined( __ARM_ARCH_8R ) \
|| defined( __ARMV8__ )
# define _IS_ARM 8
# elif defined( __ARM_ARCH_7__ ) \
|| defined( __ARM_ARCH_7A__ ) \
|| defined( __ARM_ARCH_7R__ ) \
|| defined( __ARM_ARCH_7S__ ) \
|| defined( __ARMV7__ )
# define _IS_ARM 7
# elif defined( __ARM_ARCH_6__ ) \
|| defined( __ARM_ARCH_6J__ ) \
|| defined( __ARM_ARCH_6K__ ) \
|| defined( __ARM_ARCH_6Z__ ) \
|| defined( __ARM_ARCH_6ZK__ ) \
|| defined( __ARM_ARCH_6T2__ ) \
|| defined( __ARMV6__ )
# define _IS_ARM 6
# elif defined( __ARM_ARCH_5__ ) \
|| defined( __ARM_ARCH_5E__ ) \
|| defined( __ARM_ARCH_5T__ ) \
|| defined( __ARM_ARCH_5TE__ ) \
|| defined( __ARM_ARCH_5TEJ__ ) \
|| defined( __ARMV5__ ) \
|| defined( __MARM_ARMV5__ )
# define _IS_ARM 5
# elif defined( __ARM_ARCH_4__ ) \
|| defined( __ARM_ARCH_4T__ ) \
|| defined( __ARMV4__ ) \
|| defined( __MARM_ARMV4__ ) \
|| defined( __MARM_ARM4__ ) \
|| defined( __TARGET_ARM_4T__ )
# define _IS_ARM 4
# elif defined( __ARM_ARCH_3__ ) \
|| defined( __ARM_ARCH_3M__ ) \
|| defined( __ARMV3__ )
# define _IS_ARM 3
# elif defined( __ARM_ARCH_2__ ) \
|| defined( __ARMV2__ )
# define _IS_ARM 2
# elif defined( _M_ARM )
# define _IS_ARM _M_ARM
# endif
# if ( defined( __ARM_ARCH_8M__ ) \
|| defined( __ARM_ARCH_8M_BASE__ ) \
|| defined( __ARM_ARCH_8M ) \
|| defined( __ARM_ARCH_8M_BASE ) \
|| defined( __ARM_ARCH_6__ ) \
|| defined( __ARM_ARCH_6J__ ) \
|| defined( __ARM_ARCH_6K__ ) \
|| defined( __ARM_ARCH_6Z__ ) \
|| defined( __ARM_ARCH_6ZK__ ) \
|| defined( __ARM_ARCH_6M__ ) \
|| defined( __ARM_ARCH_6SM__ ) \
|| defined( __ARMV6__ ) ) \
&& !defined( __ARM_ARCH_6T2__ )
# define _IS_THUMB 3
# elif defined( __ARM_ARCH_8__ ) \
|| defined( __ARM_ARCH_8A__ ) \
|| defined( __ARM_ARCH_8R__ ) \
|| defined( __ARM_ARCH_8 ) \
|| defined( __ARM_ARCH_8A ) \
|| defined( __ARM_ARCH_8R ) \
|| defined( __ARM_ARCH_8M_MAIN__ ) \
|| defined( __ARMV8__ ) \
|| defined( __ARM_ARCH_7__ ) \
|| defined( __ARM_ARCH_7A__ ) \
|| defined( __ARM_ARCH_7M__ ) \
|| defined( __ARM_ARCH_7EM__ ) \
|| defined( __ARM_ARCH_7R__ ) \
|| defined( __ARM_ARCH_7S__ ) \
|| defined( __ARMV7__ ) \
|| defined( __ARM_ARCH_6T2__ )
# define _IS_THUMB 4
# elif defined( __ARM_ARCH_5__ ) \
|| defined( __ARM_ARCH_5E__ ) \
|| defined( __ARM_ARCH_5T__ ) \
|| defined( __ARM_ARCH_5TE__ ) \
|| defined( __ARM_ARCH_5TEJ__ ) \
|| defined( __ARMV5__ ) \
|| defined( __MARM_ARMV5__ )
# define _IS_THUMB 2
# elif defined( __ARM_ARCH_4T__ ) \
|| defined( __TARGET_ARM_4T__ )
# define _IS_THUMB 1
# elif defined( __TARGET_ARCH_THUMB )
# define _IS_THUMB __TARGET_ARCH_THUMB
# elif defined( __ARM_ARCH_ISA_THUMB ) && __ARM_ARCH_ISA_THUMB >= 2
# define _IS_THUMB 4
# elif defined( _IS_ARM ) && _IS_ARM >= 7
# define _IS_THUMB _IS_ARM
# elif defined( __ARM_ARCH_ISA_THUMB )
# define _IS_THUMB 1
# elif defined( _IS_IN_THUMB )
# if defined( __thumb2__ ) || defined( __thumb2 ) || defined( thumb2 )
# define _IS_THUMB 4
# else
# define _IS_THUMB 1
# endif
# endif
# if defined( _IS_THUMB ) && !defined( _IS_ARM )
# if _IS_THUMB >= 4
# define _IS_ARM 7
# elif _IS_THUMB >= 3
# define _IS_ARM 6
# elif _IS_THUMB >= 2
# define _IS_ARM 5
# else
# define _IS_ARM 4
# endif
# endif
# if ( defined( __ARM_NEON__ ) || defined( __ARM_NEON ) ) \
&& ( !defined( __GNUC__ ) || __GNUC__ > 4 || __GNUC__ == 4 \
&& defined( __GNUC_MINOR__ ) && __GNUC_MINOR__ >= 7 )
# define _IS_NEON 1
# endif
#endif
/*
* Inline macros
*/
#ifdef _ALWAYS_INLINE
# undef _ALWAYS_INLINE
#endif
#ifdef _IS_NOINLINE
# undef _IS_NOINLINE
#endif
#ifdef _STATIC_INLINE
# undef _STATIC_INLINE
#endif
#ifdef _STATIC_ALWAYS_INLINE
# undef _STATIC_ALWAYS_INLINE
#endif
#ifdef _STATIC_NOINLINE
# undef _STATIC_NOINLINE
#endif
#ifdef _INLINE_ASM
# undef _INLINE_ASM
#endif
#if !defined( __cplusplus ) && !defined( _IS_C99 ) && ( !defined( __WATCOMC__ ) || __WATCOMC__ < 1230 )
# ifdef __GNUC__
# define inline __inline__
# elif defined( _MSC_VER ) || defined( __WATCOMC__ ) || defined( __BORLANDC__ ) ||\
defined( __ICL ) || defined( __DECC ) || defined( __DMC__ )
# define inline __inline
# else
# pragma message( _IS_LOCATIONP "*** WARNING: inline keyword will be suppressed" )
# define inline
# endif
#endif
#if defined( _MSC_VER )/* || defined( __ICL )*/
# define _ALWAYS_INLINE __forceinline
# define _IS_NOINLINE __declspec( noinline )
#elif defined( __GNUC__ )
# define _ALWAYS_INLINE __inline__ __attribute__ ((__always_inline__/*, __nodebug__*/))
# define _IS_NOINLINE __attribute__ ((noinline))
#else
# define _ALWAYS_INLINE inline
# define _IS_NOINLINE
#endif
#define _STATIC_ALWAYS_INLINE static _ALWAYS_INLINE
#define _STATIC_INLINE static inline
/*#define _STATIC_INLINE _STATIC_ALWAYS_INLINE*/
#define _STATIC_NOINLINE static _IS_NOINLINE
/*
* Various BitScan implemenations
*/
#ifdef _IS_BITSCAN64
# undef _IS_BITSCAN64
#endif
#ifdef _IS_BITSCAN32
# undef _IS_BITSCAN32
#endif
#ifdef _IS_BITSCANF32
# undef _IS_BITSCANF32
#endif
#ifdef _IS_BITSCANR32
# undef _IS_BITSCANR32
#endif
#ifdef _BSF32
# undef _BSF32
#endif
#ifdef _BSR32
# undef _BSR32
#endif
#ifdef _BSF64
# undef _BSF64
#endif
#ifdef _BSR64
# undef _BSR64
#endif
typedef unsigned int bsint_t;
#if defined( _M_ALPHA ) || defined( _M_IA64 ) || defined( _M_X64 ) || defined( _M_ARM64 ) \
|| defined( _M_PPC64 ) || defined( _WIN64 ) || defined( __MINGW64__ )
# ifndef WORDSIZE
# define WORDSIZE 64
# endif
# ifndef __WORDSIZE
# define __WORDSIZE WORDSIZE
# endif
# if __WORDSIZE != WORDSIZE
# undef WORDSIZE
# define WORDSIZE __WORDSIZE
# endif
#endif
#if defined( _MSC_VER ) && _MSC_VER >= 1400
/* Intrinsic versions */
# include <intrin.h>
/* Prototypes: */
/* unsigned char _BitScanForward( unsigned long *_Index, unsigned long _Mask ); */
/* unsigned char _BitScanReverse( unsigned long *_Index, unsigned long _Mask ); */
# define _BSF32( __i, __m ) _BitScanForward( ( __i ), ( __m ) )
# define _BSR32( __i, __m ) _BitScanReverse( ( __i ), ( __m ) )
# define _IS_BITSCANF32 1
# define _IS_BITSCANR32 1
# pragma intrinsic( _BitScanForward )
# pragma intrinsic( _BitScanReverse )
# ifdef __cplusplus
_STATIC_ALWAYS_INLINE
unsigned char _BitScanForward( bsint_t *i, uint32_t m ) _IS_NOTHROW
{
register unsigned long r;
register const unsigned char s = _BSF32( &r, m );
return *i = static_cast< bsint_t >( r ), s;
}
_STATIC_ALWAYS_INLINE
unsigned char _BitScanReverse( bsint_t *i, uint32_t m ) _IS_NOTHROW
{
register unsigned long r;
register const unsigned char s = _BSR32( &r, m );
return *i = static_cast< bsint_t >( r ), s;
}
# endif /* __cplusplus */
# if defined( __WORDSIZE ) && __WORDSIZE > 32
/* Prototypes: */
/* unsigned char _BitScanForward64( unsigned long *_Index, unsigned __int64 _Mask ); */
/* unsigned char _BitScanReverse64( unsigned long *_Index, unsigned __int64 _Mask ); */
# define _BSF64( __i, __m ) _BitScanForward64( ( __i ), ( __m ) )
# define _BSR64( __i, __m ) _BitScanReverse64( ( __i ), ( __m ) )
# define _IS_BITSCAN64 1
# pragma intrinsic( _BitScanForward64 )
# pragma intrinsic( _BitScanReverse64 )
# ifdef __cplusplus
_STATIC_ALWAYS_INLINE
unsigned char _BitScanForward64( bsint_t *i, uint64_t m ) _IS_NOTHROW
{
register unsigned long r;
register const unsigned char s = _BSF64( &r, m );
return *i = static_cast< bsint_t >( r ), s;
}
_STATIC_ALWAYS_INLINE
unsigned char _BitScanReverse64( bsint_t *i, uint64_t m ) _IS_NOTHROW
{
register unsigned long r;
register const unsigned char s = _BSR64( &r, m );
return *i = static_cast< bsint_t >( r ), s;
}
# endif /* __cplusplus */
# else /* !__WORDSIZE || __WORDSIZE <= 32 */
# ifndef WORDSIZE
# define WORDSIZE 32
# endif
# endif /* __WORDSIZE && __WORDSIZE > 32 */
# ifndef __WORDSIZE
# define __WORDSIZE WORDSIZE
# endif
# if __WORDSIZE != WORDSIZE
# undef WORDSIZE
# define WORDSIZE __WORDSIZE
# endif
#elif defined( __GNUC__ ) || defined( __INTEL_COMPILER )
# ifdef _IS_X64
_STATIC_ALWAYS_INLINE
unsigned char _BitScanForward( bsint_t *i, uint32_t m ) _IS_NOTHROW
{
register uint32_t tmp;
register uint8_t nzf;
__asm__ (
# ifdef INTEL_SYNTAX
# ifdef __INTEL_COMPILER
"bsf %1,%2\n\t"
"setnz %0"
# else
"bsfl %1,%2\n\t"
"setnz %0"
# endif
# else
"bsfl %2,%1\n\t"
"setnz %0"
# endif
: "=r" ( nzf ), "=r" ( tmp )
: "rm" ( m )
:
);
*i = tmp;
return nzf;
}
_STATIC_ALWAYS_INLINE
unsigned char _BitScanForward64( bsint_t *i, uint64_t m ) _IS_NOTHROW
{
register uint64_t tmp;
register uint8_t nzf;
__asm__ (
# ifdef INTEL_SYNTAX
"bsfq %1,%2\n\t"
"setnz %0"
# else
"bsfq %2,%1\n\t"
"setnz %0"
# endif
: "=r" ( nzf ), "=r" ( tmp )
: "rm" ( m )
:
);
*i = ( unsigned )tmp;
return nzf;
}
_STATIC_ALWAYS_INLINE
unsigned char _BitScanReverse( bsint_t *i, uint32_t m ) _IS_NOTHROW
{
register uint32_t tmp;
register uint8_t nzf;
__asm__ (
# ifdef INTEL_SYNTAX
# ifdef __INTEL_COMPILER
"bsr %1,%2\n\t"
"setnz %0"
# else
"bsrl %1,%2\n\t"
"setnz %0"
# endif
# else
"bsrl %2,%1\n\t"
"setnz %0"
# endif
: "=r" ( nzf ), "=r" ( tmp )
: "rm" ( m )
:
);
*i = tmp;
return nzf;
}
_STATIC_ALWAYS_INLINE
unsigned char _BitScanReverse64( bsint_t *i, uint64_t m ) _IS_NOTHROW
{
register uint64_t tmp;
register uint8_t nzf;
__asm__ (
# ifdef INTEL_SYNTAX
"bsrq %1,%2\n\t"
"setnz %0"
# else
"bsrq %2,%1\n\t"
"setnz %0"
# endif
: "=r" ( nzf ), "=r" ( tmp )
: "rm" ( m )
:
);
*i = ( unsigned )tmp;
return nzf;
}
# define _IS_BITSCANF32 1
# define _IS_BITSCANR32 1