Home | History | Annotate | Download | only in internal 
      1 /*
      2  * WARNING: Do *NOT* ever include this file, only for internal use!
      3  */
      4 #ifndef _NFCT_BITOPS_H_
      5 #define _NFCT_BITOPS_H_
      6 
      7 static inline void set_bit(int nr, uint32_t *addr)
      8 {
      9 	addr[nr >> 5] |= (1UL << (nr & 31));
     10 }
     11 
     12 static inline void unset_bit(int nr, uint32_t *addr)
     13 {
     14 	addr[nr >> 5] &= ~(1UL << (nr & 31));
     15 }
     16 
     17 static inline void set_bit_u16(int nr, uint16_t *addr)
     18 {
     19 	addr[nr >> 4] |= (1UL << (nr & 15));
     20 }
     21 
     22 static inline void unset_bit_u16(int nr, uint16_t *addr)
     23 {
     24 	addr[nr >> 4] &= ~(1UL << (nr & 15));
     25 }
     26 
     27 static inline void
     28 set_bitmask_u32(uint32_t *buf1, const uint32_t *buf2, int len)
     29 {
     30 	int i;
     31 
     32 	for (i=0; i<len; i++)
     33 		buf1[i] |= buf2[i];
     34 }
     35 
     36 static inline void
     37 unset_bitmask_u32(uint32_t *buf1, const uint32_t *buf2, int len)
     38 {
     39 	int i;
     40 
     41 	for (i=0; i<len; i++)
     42 		buf1[i] &= ~buf2[i];
     43 }
     44 
     45 static inline int test_bit(int nr, const uint32_t *addr)
     46 {
     47 	return ((1UL << (nr & 31)) & (addr[nr >> 5])) != 0;
     48 }
     49 
     50 static inline int
     51 test_bitmask_u32(const uint32_t *buf1, const uint32_t *buf2, int len)
     52 {
     53 	int i;
     54 
     55 	for (i=0; i<len; i++) {
     56 		if ((buf1[i] & buf2[i]) != buf2[i]) {
     57 			return 0;
     58 		}
     59 	}
     60 	return 1;
     61 }
     62 
     63 static inline int
     64 test_bitmask_u32_or(const uint32_t *buf1, const uint32_t *buf2, int len)
     65 {
     66 	int i;
     67 
     68 	for (i=0; i<len; i++) {
     69 		if (buf1[i] & buf2[i]) {
     70 			return 1;
     71 		}
     72 	}
     73 	return 0;
     74 }
     75 
     76 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
     77 
     78 #endif
     79