diff options
Diffstat (limited to 'sysdeps/generic/memchr.c')
| -rw-r--r-- | sysdeps/generic/memchr.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/sysdeps/generic/memchr.c b/sysdeps/generic/memchr.c index ba2738c069..0eb65d12a6 100644 --- a/sysdeps/generic/memchr.c +++ b/sysdeps/generic/memchr.c @@ -78,9 +78,9 @@ memchr (s, c, n) /* Bits 31, 24, 16, and 8 of this number are zero. Call these bits the "holes." Note that there is a hole just to the left of each byte, with an extra at the end: - + bits: 01111110 11111110 11111110 11111111 - bytes: AAAAAAAA BBBBBBBB CCCCCCCC DDDDDDDD + bytes: AAAAAAAA BBBBBBBB CCCCCCCC DDDDDDDD The 1-bits make sure that carries propagate to the next 0-bit. The 0-bits provide holes for carries to fall into. */ @@ -144,10 +144,10 @@ memchr (s, c, n) /* Add MAGIC_BITS to LONGWORD. */ if ((((longword + magic_bits) - + /* Set those bits that were unchanged by the addition. */ ^ ~longword) - + /* Look at only the hole bits. If any of the hole bits are unchanged, most likely one of the bytes was a zero. */ |