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Diffstat (limited to 'sizes.h')
| -rw-r--r-- | sizes.h | 38 |
1 files changed, 38 insertions, 0 deletions
@@ -0,0 +1,38 @@ +/* + * Very simple but very effective user-space memory tester. + * Originally by Simon Kirby <sim@stormix.com> <sim@neato.org> + * Version 2 by Charles Cazabon <charlesc-memtester@pyropus.ca> + * Version 3 not publicly released. + * Version 4 rewrite: + * Copyright (C) 2004-2010 Charles Cazabon <charlesc-memtester@pyropus.ca> + * Licensed under the terms of the GNU General Public License version 2 (only). + * See the file COPYING for details. + * + * This file contains some macro definitions for handling 32/64 bit platforms. + * + */ + +#include <limits.h> + +#define rand32() ((unsigned int) rand() | ( (unsigned int) rand() << 16)) + +#if (ULONG_MAX == 4294967295UL) + #define rand_ul() rand32() + #define UL_ONEBITS 0xffffffff + #define UL_LEN 32 + #define CHECKERBOARD1 0x55555555 + #define CHECKERBOARD2 0xaaaaaaaa + #define UL_BYTE(x) ((x | x << 8 | x << 16 | x << 24)) +#elif (ULONG_MAX == 18446744073709551615ULL) + #define rand64() (((ul) rand32()) << 32 | ((ul) rand32())) + #define rand_ul() rand64() + #define UL_ONEBITS 0xffffffffffffffffUL + #define UL_LEN 64 + #define CHECKERBOARD1 0x5555555555555555 + #define CHECKERBOARD2 0xaaaaaaaaaaaaaaaa + #define UL_BYTE(x) (((ul)x | (ul)x<<8 | (ul)x<<16 | (ul)x<<24 | (ul)x<<32 | (ul)x<<40 | (ul)x<<48 | (ul)x<<56)) +#else + #error long on this platform is not 32 or 64 bits +#endif + + |