Mail Archives: djgpp/1998/10/01/19:18:56
> From: Nate Eldredge <nate AT cartsys DOT com>
> To: Bradley Walker <bwalker AT boofoo DOT Eng DOT Sun DOT COM>
> CC: djgpp AT delorie DOT com
> Subject: Re: question about libm
> References: <ywjd67e5jmtq DOT fsf AT boofoo DOT Eng DOT Sun DOT COM>
>
> Bradley Walker wrote:
> >
> > When I use the libm.a that is included with djgcc, is this a software
> > implementation of the the transcendental functions or is there any inlining
> > to take advantage of a math coprocessor?
>
> No; libm is probably slower with respect to math functions; it doesn't
> use the coprocessor as much as it might. It is, however, more compliant
> to ANSI in such areas as setting `errno' on errors. But there are some
> functions that only libm provides, like gamma.
> --
>
My application is an extremely heavy user of pow() and log(). What
I'm interested is will the libm use a math coprocessor for these
functions or will it run them in s/w..
Thanks.
-brad w
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