On Wed, 20 Mar 2002, Steve Kargl wrote: > I re-read the audit trail of the PR. You list two items: > gamma() should become tgamma(); and, (lack of) the use > of __pure2. I was planning to compare our msun against > NetBSD and merge any appropriate changes (if any exists). > Do you have any patches for msun that you might commit > in the future?
I created tgamma() from the BSD gamma() and will commit after a repo-copy. The changes are simple, and clean enough except gamma.c needs parts of exp.c and log.c. I forgot about the missing __pure2 in <math.h>. (It prevents gcc doing optimizations like moving sqrt(2) out of loops.) There is another thread on freebsd-standards about _MULTI_LIBM support. I want the errno support completely removed so that we have a chance of declaring math functions as __pure2 unconditionally. But maybe we can't do this anyway, because math functions normally have the side effect of setting IEEE exception flags. Can we do things like #ifpragma STDC FENV_ACCESS ON double sqrt(double); #else double sqrt(double) __pure2; #endif ? > Also, are functions missing in libm with respect to the > C99 standard? I would be willing to work on implementing > these functions. Most are missing, if you count long double and complex support. Only a few are, for double support. I noticed some easy ones like isnormal() when I scanned the C99 draft standard today to check the status if infnan.3. Bruce To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
