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-rw-r--r--src/libstddjb/bitarray_clearsetn.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libstddjb/bitarray_clearsetn.c b/src/libstddjb/bitarray_clearsetn.c
index b3f46f1..d14d6e4 100644
--- a/src/libstddjb/bitarray_clearsetn.c
+++ b/src/libstddjb/bitarray_clearsetn.c
@@ -8,7 +8,7 @@ void bitarray_clearsetn (register unsigned char *s, register unsigned int a, reg
b += a ;
if ((a >> 3) == ((b-1) >> 3))
{
- register unsigned char mask = ((1 << (a & 7)) - 1) ^ ((1 << (b & 7)) - 1) ;
+ register unsigned char mask = (1 << (a & 7)) - 1 ^ (1 << 1 + (b-1 & 7)) - 1 ;
if (h) s[a>>3] |= mask ; else s[a>>3] &= ~mask ;
}
else