diff options
Diffstat (limited to 'src/H5I.c')
| -rw-r--r-- | src/H5I.c | 8 |
1 files changed, 6 insertions, 2 deletions
@@ -88,7 +88,7 @@ static herr_t H5I_init_interface(void); * than the ID_MASK constant). */ # define H5I_LOC(a,s) ((hid_t)((size_t)(a)&((s)-1))) -# define POWER_OF_TWO(n) ((((n) - 1) & (n)) == 0 && (n) > 1) +# define POWER_OF_TWO(n) ((((n) - 1) & (n)) == 0 && (n) > 0) #else /* * Map an ID to a hash location. @@ -225,6 +225,10 @@ H5I_term_interface(void) * two, I placed it in a macro POWER_OF_TWO which uses the fact * that a number that is a power of two has only 1 bit set. * + * Bill Wendling, 2000-05-09 + * Changed POWER_OF_TWO macro to allow 1 as a valid power of two. + * Changed test below accordingly. + * *------------------------------------------------------------------------- */ intn @@ -241,7 +245,7 @@ H5I_init_group(H5I_type_t grp, size_t hash_size, uintn reserved, HGOTO_DONE(FAIL); } #ifdef HASH_SIZE_POWER_2 - if (!POWER_OF_TWO(hash_size)) + if (!POWER_OF_TWO(hash_size) || hash_size == 1) HGOTO_DONE(FAIL); #endif /* HASH_SIZE_POWER_2 */ |