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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems, Inc.
*
* 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; version 2 of the License.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef DRIZZLED_KORR_H
#define DRIZZLED_KORR_H
/*
* Define-functions for reading and storing in machine independent format
* (low byte first)
*
* No one seems to know what "korr" means in this context. A global search
* and replace would be fine if someone can come up with a better description
*/
/* Optimized store functions for Intel x86 */
#if defined(__i386__)
#define sint2korr(A) (*((int16_t *) (A)))
#define sint3korr(A) ((int32_t) ((((unsigned char) (A)[2]) & 128) ? \
(((uint32_t) 255L << 24) | \
(((uint32_t) (unsigned char) (A)[2]) << 16) | \
(((uint32_t) (unsigned char) (A)[1]) << 8) | \
((uint32_t) (unsigned char) (A)[0])) : \
(((uint32_t) (unsigned char) (A)[2]) << 16) | \
(((uint32_t) (unsigned char) (A)[1]) << 8) | \
((uint32_t) (unsigned char) (A)[0])))
#define sint4korr(A) (*((long *) (A)))
#define uint2korr(A) (*((uint16_t *) (A)))
#if defined(HAVE_VALGRIND)
#define uint3korr(A) (uint32_t) (((uint32_t) ((unsigned char) (A)[0])) +\
(((uint32_t) ((unsigned char) (A)[1])) << 8) +\
(((uint32_t) ((unsigned char) (A)[2])) << 16))
#else
/*
ATTENTION !
Please, note, uint3korr reads 4 bytes (not 3) !
It means, that you have to provide enough allocated space !
*/
#define uint3korr(A) (long) (*((unsigned int *) (A)) & 0xFFFFFF)
#endif /* HAVE_VALGRIND */
#define uint4korr(A) (*((uint32_t *) (A)))
#define uint8korr(A) (*((uint64_t *) (A)))
#define sint8korr(A) (*((int64_t *) (A)))
#define int2store(T,A) *((uint16_t*) (T))= (uint16_t) (A)
#define int3store(T,A) do { *(T)= (unsigned char) ((A));\
*(T+1)=(unsigned char) (((uint32_t) (A) >> 8));\
*(T+2)=(unsigned char) (((A) >> 16)); } while (0)
#define int4store(T,A) *((long *) (T))= (long) (A)
#define int8store(T,A) *((uint64_t *) (T))= (uint64_t) (A)
typedef union {
double v;
long m[2];
} doubleget_union;
#define doubleget(V,M) \
do { doubleget_union _tmp; \
_tmp.m[0] = *((long*)(M)); \
_tmp.m[1] = *(((long*) (M))+1); \
(V) = _tmp.v; } while(0)
#define doublestore(T,V) do { *((long *) T) = ((doubleget_union *)&V)->m[0]; \
*(((long *) T)+1) = ((doubleget_union *)&V)->m[1]; \
} while (0)
#define float4get(V,M) do { *((float *) &(V)) = *((float*) (M)); } while(0)
#define float8get(V,M) doubleget((V),(M))
#define floatstore(T,V) memcpy((T), (&V), sizeof(float))
#define float8store(V,M) doublestore((V),(M))
#else
/*
We're here if it's not a IA-32 architecture (Win32 and UNIX IA-32 defines
were done before)
*/
#define sint2korr(A) (int16_t) (((int16_t) ((unsigned char) (A)[0])) +\
((int16_t) ((int16_t) (A)[1]) << 8))
#define sint3korr(A) ((int32_t) ((((unsigned char) (A)[2]) & 128) ? \
(((uint32_t) 255L << 24) | \
(((uint32_t) (unsigned char) (A)[2]) << 16) |\
(((uint32_t) (unsigned char) (A)[1]) << 8) | \
((uint32_t) (unsigned char) (A)[0])) : \
(((uint32_t) (unsigned char) (A)[2]) << 16) |\
(((uint32_t) (unsigned char) (A)[1]) << 8) | \
((uint32_t) (unsigned char) (A)[0])))
#define sint4korr(A) (int32_t) (((int32_t) ((unsigned char) (A)[0])) +\
(((int32_t) ((unsigned char) (A)[1]) << 8)) +\
(((int32_t) ((unsigned char) (A)[2]) << 16)) +\
(((int32_t) ((int16_t) (A)[3]) << 24)))
#define sint8korr(A) (int64_t) uint8korr(A)
#define uint2korr(A) (uint16_t) (((uint16_t) ((unsigned char) (A)[0])) +\
((uint16_t) ((unsigned char) (A)[1]) << 8))
#define uint3korr(A) (uint32_t) (((uint32_t) ((unsigned char) (A)[0])) +\
(((uint32_t) ((unsigned char) (A)[1])) << 8) +\
(((uint32_t) ((unsigned char) (A)[2])) << 16))
#define uint4korr(A) (uint32_t) (((uint32_t) ((unsigned char) (A)[0])) +\
(((uint32_t) ((unsigned char) (A)[1])) << 8) +\
(((uint32_t) ((unsigned char) (A)[2])) << 16) +\
(((uint32_t) ((unsigned char) (A)[3])) << 24))
#define uint8korr(A) ((uint64_t)(((uint32_t) ((unsigned char) (A)[0])) +\
(((uint32_t) ((unsigned char) (A)[1])) << 8) +\
(((uint32_t) ((unsigned char) (A)[2])) << 16) +\
(((uint32_t) ((unsigned char) (A)[3])) << 24)) +\
(((uint64_t) (((uint32_t) ((unsigned char) (A)[4])) +\
(((uint32_t) ((unsigned char) (A)[5])) << 8) +\
(((uint32_t) ((unsigned char) (A)[6])) << 16) +\
(((uint32_t) ((unsigned char) (A)[7])) << 24))) <<\
32))
#define int2store(T,A) do { uint32_t def_temp= (uint32_t) (A) ;\
*((unsigned char*) (T))= (unsigned char)(def_temp); \
*((unsigned char*) (T)+1)=(unsigned char)((def_temp >> 8)); \
} while(0)
#define int3store(T,A) do { /*lint -save -e734 */\
*((unsigned char*)(T))=(unsigned char) ((A));\
*((unsigned char*) (T)+1)=(unsigned char) (((A) >> 8));\
*((unsigned char*)(T)+2)=(unsigned char) (((A) >> 16)); \
/*lint -restore */} while(0)
#define int4store(T,A) do { *((char *)(T))=(char) ((A));\
*(((char *)(T))+1)=(char) (((A) >> 8));\
*(((char *)(T))+2)=(char) (((A) >> 16));\
*(((char *)(T))+3)=(char) (((A) >> 24)); } while(0)
#define int8store(T,A) do { uint32_t def_temp= (uint32_t) (A), def_temp2= (uint32_t) ((A) >> 32); \
int4store((T),def_temp); \
int4store((T+4),def_temp2); } while(0)
#ifdef WORDS_BIGENDIAN
#define float4get(V,M) do { float def_temp;\
((unsigned char*) &def_temp)[0]=(M)[3];\
((unsigned char*) &def_temp)[1]=(M)[2];\
((unsigned char*) &def_temp)[2]=(M)[1];\
((unsigned char*) &def_temp)[3]=(M)[0];\
(V)=def_temp; } while(0)
#define float8store(T,V) do { *(T)= ((unsigned char *) &V)[7];\
*((T)+1)=(char) ((unsigned char *) &V)[6];\
*((T)+2)=(char) ((unsigned char *) &V)[5];\
*((T)+3)=(char) ((unsigned char *) &V)[4];\
*((T)+4)=(char) ((unsigned char *) &V)[3];\
*((T)+5)=(char) ((unsigned char *) &V)[2];\
*((T)+6)=(char) ((unsigned char *) &V)[1];\
*((T)+7)=(char) ((unsigned char *) &V)[0]; } while(0)
#define float8get(V,M) do { double def_temp;\
((unsigned char*) &def_temp)[0]=(M)[7];\
((unsigned char*) &def_temp)[1]=(M)[6];\
((unsigned char*) &def_temp)[2]=(M)[5];\
((unsigned char*) &def_temp)[3]=(M)[4];\
((unsigned char*) &def_temp)[4]=(M)[3];\
((unsigned char*) &def_temp)[5]=(M)[2];\
((unsigned char*) &def_temp)[6]=(M)[1];\
((unsigned char*) &def_temp)[7]=(M)[0];\
(V) = def_temp; } while(0)
#else
#define float4get(V,M) memcpy(&V, (M), sizeof(float))
#if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
#define doublestore(T,V) do { *(((char*)T)+0)=(char) ((unsigned char *) &V)[4];\
*(((char*)T)+1)=(char) ((unsigned char *) &V)[5];\
*(((char*)T)+2)=(char) ((unsigned char *) &V)[6];\
*(((char*)T)+3)=(char) ((unsigned char *) &V)[7];\
*(((char*)T)+4)=(char) ((unsigned char *) &V)[0];\
*(((char*)T)+5)=(char) ((unsigned char *) &V)[1];\
*(((char*)T)+6)=(char) ((unsigned char *) &V)[2];\
*(((char*)T)+7)=(char) ((unsigned char *) &V)[3]; }\
while(0)
#define doubleget(V,M) do { double def_temp;\
((unsigned char*) &def_temp)[0]=(M)[4];\
((unsigned char*) &def_temp)[1]=(M)[5];\
((unsigned char*) &def_temp)[2]=(M)[6];\
((unsigned char*) &def_temp)[3]=(M)[7];\
((unsigned char*) &def_temp)[4]=(M)[0];\
((unsigned char*) &def_temp)[5]=(M)[1];\
((unsigned char*) &def_temp)[6]=(M)[2];\
((unsigned char*) &def_temp)[7]=(M)[3];\
(V) = def_temp; } while(0)
#endif /* __FLOAT_WORD_ORDER */
#define float8get(V,M) doubleget((V),(M))
#define float8store(V,M) doublestore((V),(M))
#endif /* WORDS_BIGENDIAN */
#endif /* __i386__ */
/*
Define-funktions for reading and storing in machine format from/to
short/long to/from some place in memory V should be a (not
register) variable, M is a pointer to byte
*/
#ifdef WORDS_BIGENDIAN
#define shortget(V,M) do { V = (short) (((short) ((unsigned char) (M)[1]))+\
((short) ((short) (M)[0]) << 8)); } while(0)
#define longget(V,M) do { int32_t def_temp;\
((unsigned char*) &def_temp)[0]=(M)[0];\
((unsigned char*) &def_temp)[1]=(M)[1];\
((unsigned char*) &def_temp)[2]=(M)[2];\
((unsigned char*) &def_temp)[3]=(M)[3];\
(V)=def_temp; } while(0)
#define shortstore(T,A) do { uint32_t def_temp=(uint32_t) (A) ;\
*(((char*)T)+1)=(char)(def_temp); \
*(((char*)T)+0)=(char)(def_temp >> 8); } while(0)
#define longstore(T,A) do { *(((char*)T)+3)=((A));\
*(((char*)T)+2)=(((A) >> 8));\
*(((char*)T)+1)=(((A) >> 16));\
*(((char*)T)+0)=(((A) >> 24)); } while(0)
#define floatstore(T, V) memcpy((T), (&V), sizeof(float))
#define doubleget(V, M) memcpy(&V, (M), sizeof(double))
#define doublestore(T, V) memcpy((T), &V, sizeof(double))
#define int64_tget(V, M) memcpy(&V, (M), sizeof(uint64_t))
#define int64_tstore(T, V) memcpy((T), &V, sizeof(uint64_t))
#else
#define shortget(V,M) do { V = sint2korr(M); } while(0)
#define longget(V,M) do { V = sint4korr(M); } while(0)
#define shortstore(T,V) int2store(T,V)
#define longstore(T,V) int4store(T,V)
#ifndef floatstore
#define floatstore(T,V) memcpy((T), (&V), sizeof(float))
#endif
#ifndef doubleget
#define doubleget(V, M) memcpy(&V, (M), sizeof(double))
#define doublestore(T,V) memcpy((T), &V, sizeof(double))
#endif /* doubleget */
#define int64_tget(V,M) memcpy(&V, (M), sizeof(uint64_t))
#define int64_tstore(T,V) memcpy((T), &V, sizeof(uint64_t))
#endif /* WORDS_BIGENDIAN */
#endif /* DRIZZLED_KORR_H */
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