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ur: refactors scalar/direct-atom measurement macros

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This commit is contained in:
Joe Bryan 2020-09-15 14:01:34 -07:00
parent 39a82fe66d
commit 76f1b78218
1 changed files with 10 additions and 11 deletions
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21
pkg/urbit/include/ur/defs.h
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@ -30,6 +30,13 @@ typedef uint8_t ur_bool_t;
#define ur_mask_31(a) (a & 0x7fffffff)
#define ur_mask_62(a) (a & 0x3fffffffffffffffULL)
/*
** bloq (binary exponent) conversions
*/
#define ur_bloq_up1(a) ( (a + 0x1) >> 1 )
#define ur_bloq_up2(a) ( (a + 0x3) >> 2 )
#define ur_bloq_up3(a) ( (a + 0x7) >> 3 )
/*
** atom measurement
*/
@ -70,16 +77,8 @@ ur_met0_bytes_unsafe(uint64_t len, uint8_t *byt)
return (last << 3) + ur_met0_8(byt[last]);
}
#define ur_met3_8(a) \
({ uint8_t _a = ur_met0_8(a); \
( (_a >> 3) + !!ur_mask_3(_a) ); })
#define ur_met3_32(a) \
({ uint8_t _a = ur_met0_32(a); \
( (_a >> 3) + !!ur_mask_3(_a) ); })
#define ur_met3_64(a) \
({ uint8_t _a = ur_met0_64(a); \
( (_a >> 3) + !!ur_mask_3(_a) ); })
#define ur_met3_8(a) ur_bloq_up3(ur_met0_8(a))
#define ur_met3_32(a) ur_bloq_up3(ur_met0_32(a))
#define ur_met3_64(a) ur_bloq_up3(ur_met0_64(a))
#endif