Date: Wed, 17 Mar 1999 13:11:09 +0000 From: spinner.rflab@t-online.de (Steffen Hein) To: freebsd-questions@freebsd.org Subject: gnu C compiler Message-ID: <36EFA9ED.5126E95C@t-online.de>
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Dear Friends,
How can you explain me that the same gnu C compiler ( release 2.7.2.1 )
in FreeBSD apparently does not handle the long double format correctly
while in Linux it does ?
Compiling the following program 'proto.c' in FreeBSD and in Linux as
# cc -ansi proto.c -o proto.a
and running proto.a in the two systems yields the displayed outputs
/***********************************************************************
C program proto.c
***********************************************************************/
# define _POSIX_SOURCE
# include <stdio.h>
# include <stdlib.h>
# include <stddef.h>
# include <stdarg.h>
# include <float.h>
# include <math.h>
# include <string.h>
# include <ctype.h>
# include <locale.h>
# include <unistd.h>
main( )
{
printf( "\n\n Ranges : " );
printf( "\n\n FLT_MIN = % le ", FLT_MIN);
printf( "\n FLT_MAX = % le ", FLT_MAX );
printf( "\n DBL_MIN = % le ", DBL_MIN );
printf( "\n DBL_MAX = % le ", DBL_MAX );
printf( "\n LDBL_MIN = % Le ", LDBL_MIN );
printf( "\n LDBL_MAX = % Le ", LDBL_MAX );
printf( "\n\n Epsilon : " );
printf( "\n\n FLT_EPSILON = % le ", FLT_EPSILON );
printf( "\n DBL_EPSILON = % le ", DBL_EPSILON );
printf( "\n LDBL_EPSILON = % Le ", LDBL_EPSILON );
printf( "\n\n Precision : " );
printf( "\n\n FLT_DIG = % d ", FLT_DIG );
printf( "\n DBL_DIG = % d ", DBL_DIG );
printf( "\n LDBL_DIG = % d ", LDBL_DIG );
printf( "\n\n End " );
exit(NULL);
}
========================================================================
FreeBSD output:
Linux
output:
Ranges
:
FLT_MIN =
1.175494e-38
FLT_MAX =
3.402823e+38
DBL_MIN =
2.225074e-308
DBL_MAX =
1.797693e+308
LDBL_MIN =
3.362103e-4932
LDBL_MAX =
1.189731e+4932
Epsilon
:
FLT_EPSILON =
1.192093e-07
DBL_EPSILON =
2.220446e-16
LDBL_EPSILON =
1.084202e-19
Precision
:
FLT_DIG =
6
DBL_DIG =
15
LDBL_DIG =
18
End
#
Ranges :
FLT_MIN = 1.175494e-38
FLT_MAX = 3.402823e+38
DBL_MIN = 2.225074e-308
DBL_MAX = 1.797693e+308 Floating point exception - core dumped
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