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/// @file
#ifndef UR_DEFS_H
#define UR_DEFS_H
#include <assert.h>
#include <inttypes.h>
#include <limits.h>
typedef uint8_t ur_bool_t;
#define ur_min(a, b) ( ((a) < (b)) ? (a) : (b) )
#define ur_max(a, b) ( ((a) > (b)) ? (a) : (b) )
/*
** fibonacci constants, for convenient initialization of
** objects intended to be reallocated with fibonacci growth
*/
#define ur_fib10 55
#define ur_fib11 89
#define ur_fib12 144
#define ur_fib27 196418
#define ur_fib28 317811
#define ur_fib33 3524578
#define ur_fib34 5702887
/*
** bit-masking helpers
*/
#define ur_mask_3(a) (a & 0x7)
#define ur_mask_8(a) (a & 0xff)
#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
*/
#if (32 == (CHAR_BIT * __SIZEOF_INT__))
# define ur_lz32 __builtin_clz
# define ur_tz32 __builtin_ctz
#elif (32 == (CHAR_BIT * __SIZEOF_LONG__))
# define ur_lz32 __builtin_clzl
# define ur_tz32 __builtin_ctzl
#else
# error "port me"
#endif
#if (64 == (CHAR_BIT * __SIZEOF_LONG__))
# define ur_lz64 __builtin_clzl
# define ur_tz64 __builtin_ctzl
#elif (64 == (CHAR_BIT * __SIZEOF_LONG_LONG__))
# define ur_lz64 __builtin_clzll
# define ur_tz64 __builtin_ctzll
#else
# error "port me"
#endif
#define ur_lz8(a) ( ur_lz32(a) - 24 )
#define ur_tz8 ur_tz32
#define ur_met0_8(a) ( (a) ? 8 - ur_lz8(a) : 0 )
#define ur_met0_32(a) ( (a) ? 32 - ur_lz32(a) : 0 )
#define ur_met0_64(a) ( (a) ? 64 - ur_lz64(a) : 0 )
/*
** unsafe wrt trailing null bytes, which are invalid
*/
inline uint64_t
ur_met0_bytes_unsafe(uint64_t len, uint8_t *byt)
{
uint64_t last = len - 1;
return (last << 3) + ur_met0_8(byt[last]);
}
#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 /* ifndef UR_DEFS_H */
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