diff options
Diffstat (limited to 'src/H5Fprivate.h')
| -rw-r--r-- | src/H5Fprivate.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/H5Fprivate.h b/src/H5Fprivate.h index 3c64956..2401228 100644 --- a/src/H5Fprivate.h +++ b/src/H5Fprivate.h @@ -261,6 +261,23 @@ typedef struct H5F_t H5F_t; case 2: UINT16DECODE(p,l); break; \ } +/* + * Macros that check for overflows. These are somewhat dangerous to fiddle + * with. + */ +#if (H5_SIZEOF_SIZE_T >= H5_SIZEOF_OFF_T) +# define H5F_OVERFLOW_SIZET2OFFT(X) \ + ((size_t)(X)>=(size_t)((size_t)1<<(8*sizeof(off_t)-1))) +#else +# define H5F_OVERFLOW_SIZET2OFFT(X) 0 +#endif +#if (H5_SIZEOF_HSIZE_T >= H5_SIZEOF_OFF_T) +# define H5F_OVERFLOW_HSIZET2OFFT(X) \ + ((hsize_t)(X)>=(hsize_t)((hsize_t)1<<(8*sizeof(off_t)-1))) +#else +# define H5F_OVERFLOW_HSIZET2OFFT(X) 0 +#endif + /* ========= File Creation properties ============ */ /* Definitions for the size of the file user block in bytes */ #define H5F_CRT_USER_BLOCK_NAME "block_size" |