Date: Thu, 1 Oct 1998 16:18:18 -0700 (PDT)
From: Bradley Walker <Brad DOT Walker AT Eng DOT Sun DOT COM>
Message-Id: <199810012318.QAA09752@boofoo.Eng>
To: nate AT cartsys DOT com
Subject: Re: question about libm
Cc: djgpp AT delorie DOT com
X-Sun-Charset: US-ASCII

> 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