diff options
| -rw-r--r-- | src/H5Fprivate.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/H5Fprivate.h b/src/H5Fprivate.h index ff6717f..4bb6380 100644 --- a/src/H5Fprivate.h +++ b/src/H5Fprivate.h @@ -75,6 +75,18 @@ typedef struct H5F_t H5F_t; *(p) = (uint8_t)(((i) >> 24) & 0xff); (p)++; \ } +/* Encode a 32-bit unsigned integer into a variable-sized buffer */ +/* (Assumes that the high bits of the integer are zero) */ +# define UINT32ENCODE_VAR(p, n, l) { \ + uint32_t _n = (n); \ + size_t _i; \ + uint8_t *_p = (uint8_t*)(p); \ + \ + for(_i = 0; _i < l; _i++, _n >>= 8) \ + *_p++ = (uint8_t)(_n & 0xff); \ + (p) = (uint8_t*)(p) + l; \ +} + # define INT64ENCODE(p, n) { \ int64_t _n = (n); \ size_t _i; \ @@ -143,6 +155,21 @@ typedef struct H5F_t H5F_t; (i) |= ((uint32_t)(*(p) & 0xff) << 24); (p)++; \ } +/* Decode a variable-sized buffer into a 32-bit unsigned integer */ +/* (Assumes that the high bits of the integer will be zero) */ +/* (Note: this is exactly the same code as the 64-bit variable-length decoder + * and bugs/improvements should be make in both places - QAK) + */ +# define UINT32DECODE_VAR(p, n, l) { \ + size_t _i; \ + \ + n = 0; \ + (p) += l; \ + for (_i = 0; _i < l; _i++) \ + n = (n << 8) | *(--p); \ + (p) += l; \ +} + # define INT64DECODE(p, n) { \ /* WE DON'T CHECK FOR OVERFLOW! */ \ size_t _i; \ @@ -165,6 +192,9 @@ typedef struct H5F_t H5F_t; /* Decode a variable-sized buffer into a 64-bit unsigned integer */ /* (Assumes that the high bits of the integer will be zero) */ +/* (Note: this is exactly the same code as the 32-bit variable-length decoder + * and bugs/improvements should be make in both places - QAK) + */ # define UINT64DECODE_VAR(p, n, l) { \ size_t _i; \ \ |