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Detect missing lround function.

This commit is contained in:
steve 2006-04-27 05:04:59 +00:00
parent 36039e13ec
commit fd94268315
3 changed files with 36 additions and 2 deletions
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14
vvp/config.h.in
View File

@ -19,7 +19,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CVS_IDENT
#ident "$Id: config.h.in,v 1.21 2006/04/25 22:41:10 steve Exp $"
#ident "$Id: config.h.in,v 1.22 2006/04/27 05:04:59 steve Exp $"
#endif
#if defined(__cplusplus)
@ -49,6 +49,7 @@
# undef HAVE_READLINE_READLINE_H
# undef HAVE_READLINE_HISTORY_H
# undef HAVE_STDINT_H
# undef HAVE_LROUND
/* Figure if I can use readline. */
#undef USE_READLINE
@ -89,6 +90,14 @@ typedef unsigned long vvp_time64_t;
# undef HAVE_SYS_RESOURCE_H
# undef LINUX
#if !defined(HAVE_LROUND)
#if defined(__cplusplus)
extern "C" long lround(double x);
#else
extern long lround(double x);
#endif
#endif
/*
* When doing dynamic linking, we need a uniform way to identify the
@ -110,6 +119,9 @@ typedef unsigned long vvp_time64_t;
/*
* $Log: config.h.in,v $
* Revision 1.22 2006/04/27 05:04:59 steve
* Detect missing lround function.
*
* Revision 1.21 2006/04/25 22:41:10 steve
* Detect the presence of stdint.h
*

4
vvp/configure.in
View File

@ -73,6 +73,10 @@ case "${host}" in
;;
esac
# Check that these functions exist. They are mostly C99
# functions that older compilers may not yet support.
AC_CHECK_FUNCS(lround)
# see how we can give some resource usage stats with -v
# Linux does not provide mem stats in rusage, use /proc/self/statm.

20
vvp/main.cc
View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CVS_IDENT
#ident "$Id: main.cc,v 1.40 2005/01/29 06:28:19 steve Exp $"
#ident "$Id: main.cc,v 1.41 2006/04/27 05:04:59 steve Exp $"
#endif
# include "config.h"
@ -53,6 +53,21 @@ extern "C" int optind;
extern "C" const char*optarg;
#endif
#if !defined(HAVE_LROUND)
/*
* If the system doesn't provide the lround function, then we provide
* it ourselves here. It is simply the nearest integer, rounded away
* from zero.
*/
extern "C" long int lround(float x)
{
if (x >= 0.0)
return floor(x+0.5);
else
return ceil(x-0.5);
}
#endif
bool verbose_flag = false;
static char log_buffer[4096];
@ -281,6 +296,9 @@ int main(int argc, char*argv[])
/*
* $Log: main.cc,v $
* Revision 1.41 2006/04/27 05:04:59 steve
* Detect missing lround function.
*
* Revision 1.40 2005/01/29 06:28:19 steve
* Add the -s flag to start up interactive.
*