mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-23 10:11:08 +00:00
Code Issues 1 Projects Releases Wiki Activity

macros to detect fast float to int casting, lrint and lrintf, thanks to Erik de Castro Lopo.

Browse source 
Original commit message from CVS:
macros to detect fast float to int casting, lrint and lrintf, thanks to Erik de Castro Lopo.
This commit is contained in:
Steve Baker 2002-04-25 19:39:14 +00:00
parent 06989d4c52
commit f65891c5cb
2 changed files with 54 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

27
m4/lrint.m4 Normal file
View file

@ -0,0 +1,27 @@
dnl @synopsis AC_C99_FUNC_LRINT
dnl
dnl Check whether C99's lrint function is available.
dnl @version 1.1
dnl @author Erik de Castro Lopo <erikd AT mega-nerd DOT com>
dnl
dnl Permission to use, copy, modify, distribute, and sell this file for any
dnl purpose is hereby granted without fee, provided that the above copyright
dnl and this permission notice appear in all copies. No representations are
dnl made about the suitability of this software for any purpose. It is
dnl provided "as is" without express or implied warranty.
dnl
AC_DEFUN([AC_C99_FUNC_LRINT],
[AC_CACHE_CHECK(for lrint,
ac_cv_c99_lrint,
[AC_TRY_COMPILE([
#define _ISOC9X_SOURCE 1
#define _ISOC99_SOURCE 1
#define __USE_ISOC99 1
#define __USE_ISOC9X 1
#include <math.h>],
[ int value = lrint (0.432) ; ], ac_cv_c99_lrint=yes, ac_cv_c99_lrint=no)])
if test $ac_cv_c99_lrint = yes; then
AC_DEFINE(HAVE_LRINT, 1,
[Define if you have C99's lrint function.])
fi
])# AC_C99_LRINT

27
m4/lrintf.m4 Normal file
View file

@ -0,0 +1,27 @@
dnl @synopsis AC_C99_FUNC_LRINTF
dnl
dnl Check whether C99's lrintf function is available.
dnl @version 1.1
dnl @author Erik de Castro Lopo <erikd AT mega-nerd DOT com>
dnl
dnl Permission to use, copy, modify, distribute, and sell this file for any
dnl purpose is hereby granted without fee, provided that the above copyright
dnl and this permission notice appear in all copies. No representations are
dnl made about the suitability of this software for any purpose. It is
dnl provided "as is" without express or implied warranty.
dnl
AC_DEFUN([AC_C99_FUNC_LRINTF],
[AC_CACHE_CHECK(for lrintf,
ac_cv_c99_lrintf,
[AC_TRY_COMPILE([
#define _ISOC9X_SOURCE 1
#define _ISOC99_SOURCE 1
#define __USE_ISOC99 1
#define __USE_ISOC9X 1
#include <math.h>],
[ int value = lrintf (0.432) ; ], ac_cv_c99_lrintf=yes, ac_cv_c99_lrintf=no)])
if test $ac_cv_c99_lrintf = yes; then
AC_DEFINE(HAVE_LRINTF, 1,
[Define if you have C99's lrintf function.])
fi
])# AC_C99_LRINTF