179 lines
2.7 KiB
C
179 lines
2.7 KiB
C
/* minix/u64.h Author: Kees J. Bot
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* 7 Dec 1995
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* Functions to manipulate 64 bit disk addresses.
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*/
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#ifndef _MINIX__U64_H
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#define _MINIX__U64_H
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#include <sys/types.h>
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#include <limits.h>
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#define is_zero64(i) ((i) == 0)
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#define make_zero64(i) ((i) = 0)
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#define neg64(i) ((i) = -(i))
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static inline u64_t add64(u64_t i, u64_t j)
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{
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return i + j;
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}
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static inline u64_t add64u(u64_t i, unsigned j)
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{
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return i + j;
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}
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static inline u64_t add64ul(u64_t i, unsigned long j)
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{
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return i + j;
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}
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static inline int bsr64(u64_t i)
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{
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int index;
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u64_t mask;
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for (index = 63, mask = 1ULL << 63; index >= 0; --index, mask >>= 1) {
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if (i & mask)
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return index;
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}
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return -1;
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}
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static inline int cmp64(u64_t i, u64_t j)
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{
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if (i > j)
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return 1;
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else if (i < j)
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return -1;
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else /* (i == j) */
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return 0;
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}
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static inline int cmp64u(u64_t i, unsigned j)
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{
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if (i > j)
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return 1;
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else if (i < j)
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return -1;
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else /* (i == j) */
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return 0;
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}
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static inline int cmp64ul(u64_t i, unsigned long j)
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{
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if (i > j)
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return 1;
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else if (i < j)
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return -1;
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else /* (i == j) */
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return 0;
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}
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static inline unsigned cv64u(u64_t i)
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{
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/* return ULONG_MAX if really big */
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if (i>>32)
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return ULONG_MAX;
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return (unsigned)i;
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}
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static inline unsigned long cv64ul(u64_t i)
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{
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/* return ULONG_MAX if really big */
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if (i>>32)
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return ULONG_MAX;
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return (unsigned long)i;
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}
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static inline u64_t cvu64(unsigned i)
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{
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return i;
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}
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static inline u64_t cvul64(unsigned long i)
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{
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return i;
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}
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static inline unsigned diff64(u64_t i, u64_t j)
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{
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return (unsigned)(i - j);
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}
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static inline u64_t div64(u64_t i, u64_t j)
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{
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return i / j;
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}
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static inline u64_t rem64(u64_t i, u64_t j)
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{
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return i % j;
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}
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static inline unsigned long div64u(u64_t i, unsigned j)
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{
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return (unsigned long)(i / j);
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}
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static inline u64_t div64u64(u64_t i, unsigned j)
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{
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return i / j;
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}
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static inline unsigned rem64u(u64_t i, unsigned j)
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{
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return (unsigned)(i % j);
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}
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static inline unsigned long ex64lo(u64_t i)
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{
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return (unsigned long)i;
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}
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static inline unsigned long ex64hi(u64_t i)
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{
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return (unsigned long)(i>>32);
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}
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static inline u64_t make64(unsigned long lo, unsigned long hi)
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{
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return ((u64_t)hi << 32) | (u64_t)lo;
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}
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static inline u64_t mul64(u64_t i, u64_t j)
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{
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return i * j;
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}
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static inline u64_t mul64u(unsigned long i, unsigned j)
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{
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return (u64_t)i * j;
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}
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static inline u64_t sub64(u64_t i, u64_t j)
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{
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return i - j;
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}
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static inline u64_t sub64u(u64_t i, unsigned j)
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{
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return i - j;
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}
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static inline u64_t sub64ul(u64_t i, unsigned long j)
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{
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return i - j;
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}
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u64_t rrotate64(u64_t x, unsigned short b);
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u64_t rshift64(u64_t x, unsigned short b);
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u64_t xor64(u64_t a, u64_t b);
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u64_t and64(u64_t a, u64_t b);
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u64_t not64(u64_t a);
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#endif /* _MINIX__U64_H */
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