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  • uspace/lib/c/include/bitops.h

    r64e6945d r63f8966  
    3838#include <sys/types.h>
    3939
    40 /** Mask with bit @a n set. */
    41 #define BIT_V(type, n) \
    42     ((type)1 << ((n) - 1))
    43 
    44 /** Mask with rightmost @a n bits set. */
    45 #define BIT_RRANGE(type, n) \
    46     (BIT_V(type, (n) + 1) - 1)
    47 
    48 /** Mask with bits @a hi .. @a lo set. @a hi >= @a lo. */
    49 #define BIT_RANGE(type, hi, lo) \
    50     (BIT_RRANGE(type, (hi) - (lo) + 1) << (lo))
    51 
    52 /** Extract range of bits @a hi .. @a lo from @a value. */
    53 #define BIT_RANGE_EXTRACT(type, hi, lo, value) \
    54     (((value) >> (lo)) & BIT_RRANGE(type, (hi) - (lo) + 1))
    5540
    5641/** Return position of first non-zero bit from left (i.e. [log_2(arg)]).
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