elementary_instr.c File Reference

Additional low-level functions. More...

Functions
int	spr_fmsnzb32 (uint32_t val)
int	spr_fmsnzb32x0 (uint32_t val)
int	spr_fmsnzb64 (uint64_t val)
int	spr_fmsnzb64x0 (uint64_t val)
int	spr_flsnzb32 (uint32_t val)
int	spr_flsnzb32x0 (uint32_t val)
int	spr_flsnzb64 (uint64_t val)
int	spr_flsnzb64x0 (uint64_t val)
int	spr_popcount16 (uint16_t val)
	Return the number of 1 bits in val. More...
int	spr_popcount32 (uint32_t val)
	Return the number of 1 bits in val. More...
int	spr_popcount64 (uint64_t val)
	Return the number of 1 bits in val. More...
uint32_t	spr_rotl32 (uint32_t val, unsigned int ndx)
	Rotate the value val ndx bits to the left. More...
uint32_t	spr_rotr32 (uint32_t val, unsigned int ndx)
	Rotate the value val ndx bits to the right. More...
uint64_t	spr_rotl64 (uint64_t val, unsigned int ndx)
	Rotate the value val ndx bits to the left. More...
uint64_t	spr_rotr64 (uint64_t val, unsigned int ndx)
	Rotate the value val ndx bits to the right. More...
uint64_t	spr_wide_umul32 (uint32_t val1, uint32_t val2)
	Double wide unsigned multiplication. More...
uint32_t	spr_wide_umul32hi (uint32_t val1, uint32_t val2)
int64_t	spr_wide_smul32 (int32_t val1, int32_t val2)
	Double wide signed multiplication. More...
int32_t	spr_wide_smul32hi (int32_t val1, int32_t val2)
int	spr_bittest (const unsigned int *bitarray, int ndx)
void	spr_bitset (unsigned int *bitarray, int ndx)
	Set the value of bit ndx in bit array bitarray to 1. More...
void	spr_bitclr (unsigned int *bitarray, int ndx)
	Set the value of bit ndx in bit array bitarray to 0. More...
uint16_t	spr_bswap16 (uint16_t val)
uint32_t	spr_bswap32 (uint32_t val)
uint64_t	spr_bswap64 (uint64_t val)

Detailed Description

Additional low-level functions.

Provide a list of low-level functions (i.e. functions that are typically close to assembler code) that cannot be efficiently coded in C.

Note

Most (if not all) of these functions are only available to the developers of SPRAAK; the public interfaces typically do not need these low-level functions.

Author

Kris Demuynck

Date

12/09/2007