Other Alias
bitmaskSYNOPSIS
#include <bitmask.h>
cc ... -lbitmask
Allocate and free `struct bitmask *`:
struct bitmask *bitmask_alloc(unsigned int nbits); void bitmask_free(struct bitmask *bmp);
Display and parse ascii string representations:
int bitmask_displayhex(char *buf, int len, const struct bitmask *bmp); int bitmask_displaylist(char *buf, int len, const struct bitmask *bmp); int bitmask_parsehex(const char *buf, struct bitmask *bmp); int bitmask_parselist(const char *buf, struct bitmask *bmp);
Basic initialization operations:
struct bitmask *bitmask_copy(struct bitmask *bmp1, const bitmask *bmp2); struct bitmask *bitmask_setall(struct bitmask *bmp); struct bitmask *bitmask_clearall(struct bitmask *bmp);
Interface to kernel sched_{set,get}affinity system calls:
unsigned int bitmask_nbytes(struct bitmask *bmp); unsigned long *bitmask_mask(struct bitmask *bmp);
Unary numeric queries:
unsigned int bitmask_nbits(const struct bitmask *bmp); unsigned int bitmask_weight(const struct bitmask *bmp);
Unary Boolean queries:
int bitmask_isbitset(const struct bitmask *bmp, unsigned int i); int bitmask_isbitclear(const struct bitmask *bmp, unsigned int i); int bitmask_isallset(const struct bitmask *bmp); int bitmask_isallclear(const struct bitmask *bmp);
Single bit operations:
struct bitmask *bitmask_setbit(struct bitmask *bmp, unsigned int i); struct bitmask *bitmask_clearbit(struct bitmask *bmp, unsigned int i);
Binary Boolean operations: bmp1 op? bmp2:
int bitmask_equal(const struct bitmask *bmp1, const bitmask *bmp2); int bitmask_subset(const struct bitmask *bmp1, const bitmask *bmp2); int bitmask_disjoint(const struct bitmask *bmp1, const bitmask *bmp2); int bitmask_intersects(const struct bitmask *bmp1, const bitmask *bmp2);
Range operations:
struct bitmask *bitmask_setrange(struct bitmask *bmp, unsigned int i, unsigned int j); struct bitmask *bitmask_clearrange(struct bitmask *bmp, unsigned int i, unsigned int j); struct bitmask *bitmask_keeprange(struct bitmask *bmp, unsigned int i, unsigned int j);
Unary operations:
struct bitmask *bitmask_complement(struct bitmask *bmp1, const bitmask *bmp2); struct bitmask *bitmask_shiftright(struct bitmask *bmp1, const bitmask *bmp2, unsigned int n); struct bitmask *bitmask_shiftleft(struct bitmask *bmp1, const bitmask *bmp2, unsigned int n);
Binary operations:
struct bitmask *bitmask_and(struct bitmask *bmp1, const bitmask *bmp2, const bitmask *bmp3); struct bitmask *bitmask_andnot(struct bitmask *bmp1, const bitmask *bmp2, const bitmask *bmp3); struct bitmask *bitmask_or(struct bitmask *bmp1, const bitmask *bmp2, const bitmask *bmp3); struct bitmask *bitmask_eor(struct bitmask *bmp1, const bitmask *bmp2, const bitmask *bmp3);
Iteration operators:
int bitmask_first(const struct bitmask *bmp); unsigned int bitmask_next(const struct bitmask *bmp, unsigned int i); unsigned int bitmask_rel_to_abs_pos(const struct bitmask *bmp, unsigned int n); unsigned int bitmask_abs_to_rel_pos(const struct bitmask *bmp, unsigned int n); unsigned int bitmask_last(const struct bitmask *bmp);