diff options
Diffstat (limited to 'src/bitmap.c')
| -rw-r--r-- | src/bitmap.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/src/bitmap.c b/src/bitmap.c index b1e6627..ac0f3b3 100644 --- a/src/bitmap.c +++ b/src/bitmap.c @@ -74,15 +74,11 @@ bitmap_init(bitmap_t *bitmap, const bitmap_info_t *binfo) void bitmap_info_init(bitmap_info_t *binfo, size_t nbits) { - size_t i; assert(nbits > 0); assert(nbits <= (ZU(1) << LG_BITMAP_MAXBITS)); - i = nbits >> LG_BITMAP_GROUP_NBITS; - if (nbits % BITMAP_GROUP_NBITS != 0) - i++; - binfo->ngroups = i; + binfo->ngroups = BITMAP_BITS2GROUPS(nbits); binfo->nbits = nbits; } @@ -99,9 +95,10 @@ bitmap_init(bitmap_t *bitmap, const bitmap_info_t *binfo) size_t extra; memset(bitmap, 0xffU, bitmap_size(binfo)); - extra = (binfo->nbits % (binfo->ngroups * BITMAP_GROUP_NBITS)); + extra = (BITMAP_GROUP_NBITS - (binfo->nbits & BITMAP_GROUP_NBITS_MASK)) + & BITMAP_GROUP_NBITS_MASK; if (extra != 0) - bitmap[binfo->ngroups - 1] >>= (BITMAP_GROUP_NBITS - extra); + bitmap[binfo->ngroups - 1] >>= extra; } #endif /* USE_TREE */ |