Re: floating point accuracy???

Thread View: gnu.gcc.bug

1 messages

[T] Back to Threads [V] Tree View [G] Group Articles

1 total messages Started by Mike Stump Tue, 15 Sep 1992 08:13

#1148

Author: Mike Stump
Date: Tue, 15 Sep 1992 08:13

36 lines
1311 bytes

This is a problem with the backend I believe.  If it is not, then the
problem in the front-end has been fixed.

On a sun4 I now get:

pow (4,6)= 4096.000000
pow (4,6)= 4096

> Message-Id: <m0mUHwh-000AWzC@sophists.com>
> Date: Mon, 14 Sep 92 11:02 EDT
> From: lewis@sophists.com (Lewis G. Pringle)
> To: bug-gcc@prep.ai.mit.edu
> Reply-To: lewis@sophists.com

> /*
>  * I'm not sure if this is a bug, a feature, or a configuration
>  * problem, but the results of these math calls were a bit
>  * surprising to me.
>  *
>  * This code we compiled with:
>  *	gcc -o fred x.cc -lm
>  * on a 68k box running a sysVr2.2 variant using gcc 2.2.1.
>  *
>  * The output was:
>  *	pow (4,6)= 4096.000000
>  *	pow (4,6)= 4095
>  */

> #include <math.h>
> #include <stdio.h>

> main ()
> {
>  printf ("pow (4,6)= %f\n", pow (4,6));
>  printf ("pow (4,6)= %d\n", ((unsigned) pow (4,6)));
> }

Thread Navigation

This is a paginated view of messages in the thread with full content displayed inline.

Messages are displayed in chronological order, with the original post highlighted in green.

Use pagination controls to navigate through all messages in large threads.

Back to All Threads