suggested change for cipher/sha1.c's M(i) macro
Werner Koch
wk at gnupg.org
Tue Sep 19 11:51:59 CEST 2000
On Sun, 17 Sep 2000, Jim Meyering wrote:
> Please consider using `rol( tm, 1 )' in place of the functionally
> equivalent `(tm << 1) | (tm >> 31)'.
Okay, I can do so. However, at least gcc 2.95.2 does optimize this
construct to rol() anyway. I benchmarked both versions and there is
no difference.
Werner
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Werner Koch GnuPG key: 621CC013
OpenIT GmbH http://www.OpenIT.de
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