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SAA: optimize all power-of-two lengths

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We can actually use the shift optimization whenever blk_len ==
SAA_BLKLEN, which will be true for all powers of two.
This commit is contained in:
H. Peter Anvin 2008-06-10 09:31:31 -07:00
parent 1cff81e356
commit 8cc5aa7829
1 changed files with 2 additions and 3 deletions
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5
saa.c
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@ -211,7 +211,7 @@ void saa_fread(struct SAA *s, size_t posn, void *data, size_t len)
return;
}
if (s->elem_len == 1) {
if (s->blk_len == SAA_BLKLEN) {
ix = posn >> SAA_BLKSHIFT;
s->rpos = posn & (SAA_BLKLEN-1);
} else {
@ -234,9 +234,8 @@ void saa_fwrite(struct SAA *s, size_t posn, const void *data, size_t len)
nasm_malloc_error(ERR_PANIC|ERR_NOFILE, "overrun in saa_fwrite");
return;
}
if (s->elem_len == 1) {
if (s->blk_len == SAA_BLKLEN) {
ix = posn >> SAA_BLKSHIFT;
s->wpos = posn & (SAA_BLKLEN-1);
} else {