James Hirschorn writes:
> I guess "fold" means do the computation at compile time?
Yes.
> No, it is being called with a variable. That is interesting that libc has a
> gamma function. I will have to track down the implementation ...
I believe it is here:
http://sourceware.org/git/?p=glibc.git
On 11/15/2011 06:07 AM, James Hirschorn wrote:
> I have noticed that the builtin gamma function is very accurate and
> extremely fast. Can someone tell me where to find the source code for the
> implementation?
Probably sysdeps/ieee754/dbl-64/e_lgamma_r.c
> gdb skips over the call to
nce Taylor [mailto:i...@google.com]
Sent: Tuesday, November 15, 2011 1:58 AM
To: James Hirschorn
Cc: gcc@gcc.gnu.org; james.hirsch...@gmail.com
Subject: Re: builtin gamma function
James Hirschorn writes:
I have noticed that the builtin gamma function is very accurate and
extremely fast. Can so
t: Tuesday, November 15, 2011 1:58 AM
To: James Hirschorn
Cc: gcc@gcc.gnu.org; james.hirsch...@gmail.com
Subject: Re: builtin gamma function
James Hirschorn writes:
> I have noticed that the builtin gamma function is very accurate and
> extremely fast. Can someone tell me where to find the sou
James Hirschorn writes:
> I have noticed that the builtin gamma function is very accurate and
> extremely fast. Can someone tell me where to find the source code for the
> implementation?
Are you calling it on a constant? Because gcc will fold gamma applied
to a constant which meet
I have noticed that the builtin gamma function is very accurate and
extremely fast. Can someone tell me where to find the source code for the
implementation?
gdb skips over the call to the builtin gamma. I assume it is not implemented
by the simple Lanczos algorithm in tr1/gamma.tcc because I
