diff options
Diffstat (limited to 'include/my_compare.h')
| -rw-r--r-- | include/my_compare.h | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/include/my_compare.h b/include/my_compare.h index 0db22b593f4..87f0aa8f3ca 100644 --- a/include/my_compare.h +++ b/include/my_compare.h @@ -91,17 +91,19 @@ typedef struct st_HA_KEYSEG /* Key-portion */ #define size_to_store_key_length(length) ((length) < 255 ? 1 : 3) -#define get_rec_bits(bit_ptr, bit_ofs, bit_len) \ - (((((uint16) (bit_ptr)[1] << 8) | (uint16) (bit_ptr)[0]) >> (bit_ofs)) & \ - ((1 << (bit_len)) - 1)) - -#define set_rec_bits(bits, bit_ptr, bit_ofs, bit_len) \ -{ \ - (bit_ptr)[0]= ((bit_ptr)[0] & ~(((1 << (bit_len)) - 1) << (bit_ofs))) | \ - ((bits) << (bit_ofs)); \ - if ((bit_ofs) + (bit_len) > 8) \ - (bit_ptr)[1]= ((bit_ptr)[1] & ~((1 << ((bit_len) - 8 + (bit_ofs))) - 1)) | \ - ((bits) >> (8 - (bit_ofs))); \ +static inline uint16 get_rec_bits(const uchar *ptr, uchar ofs, uint len) +{ + uint16 val= ptr[0]; + if (ofs + len > 8) + val|= (uint16)(ptr[1]) << 8; + return (val >> ofs) & ((1 << len) - 1); +} + +static inline void set_rec_bits(uint16 bits, uchar *ptr, uchar ofs, uint len) +{ + ptr[0]= (ptr[0] & ~(((1 << len) - 1) << ofs)) | (bits << ofs); + if (ofs + len > 8) + ptr[1]= (ptr[1] & ~((1 << (len - 8 + ofs)) - 1)) | (bits >> (8 - ofs)); } #define clr_rec_bits(bit_ptr, bit_ofs, bit_len) \ |