Hello all,
I have successfully built SH4-Linux toolchain based on
(binutils-2.17, gcc-4.2-20061205, glibc-2.5) for Renesas SH target.
I am facing problem while executing the following C++ program.
------------------------------------------------------------------
#include <stdio.h>
#include <cmath>
#include <cerrno>
double value;
int main( void )
{
value = sqrt(-1.2);
if (errno != EDOM) {
printf("sqrt: GOT %f\n", value);
}
}
------------------------------------------------------------------
The above program compiles successfully with the sh4-linux toolchain.
While executing on target platform "sqrt" function is returning "nan" but
"errno" variable is not set to "EDOM".
Command: sh4-linux-gcc <name> {here default target is m4}
Observations:
1. When the above program is compiled with "-m4-nofpu" target option or with
any other FPU less target option program executes successfully and the
"errno" variable is set to "EDOM".
Command: sh4-linux-gcc -m4-nofpu <name>
Is there any relation with the target processor (i.e. floating point unit
processor or non - floating point unit processor)? Because the only difference
between success and failure condition in our case is the target switch we are
specifying (m4-nofpu or m4 respectively ).
Any help on this will be appreciated.
Regards,
Ashay Jaiswal
KPIT Cummins Infosystems Ltd,
Pune (INDIA)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Free download of GNU based SH-Linux toolchains for Renesas' SH Series.
The following site also offers free technical support to its users.
Visit http://www.kpitgnutools.com for details.
Latest versions of KPIT GNU SH-Linux tools were released on April 5, 2007.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
Summary: SH- Mathematical Error handling is no working for valid
code
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: Ashay dot Jaiswal at kpitcummins dot com
GCC build triplet: i686-pc-linux
GCC host triplet: sh4-unknown-linux
GCC target triplet: sh4-unknown-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31948
