projects / audio-libsamplerate.git / blame
| Commit | Line | Data |
|---|---|---|
| 8529da43 MG |
1 | dnl @synopsis AC_C99_FUNC_LRINTF |
| 2 | dnl | |
| 3 | dnl Check whether C99's lrintf function is available. | |
| 4 | dnl @version 1.3 Feb 12 2002 | |
| 5 | dnl @author Erik de Castro Lopo <erikd AT mega-nerd DOT com> | |
| 6 | dnl | |
| 7 | dnl Permission to use, copy, modify, distribute, and sell this file for any | |
| 8 | dnl purpose is hereby granted without fee, provided that the above copyright | |
| 9 | dnl and this permission notice appear in all copies. No representations are | |
| 10 | dnl made about the suitability of this software for any purpose. It is | |
| 11 | dnl provided "as is" without express or implied warranty. | |
| 12 | dnl | |
| 13 | AC_DEFUN([AC_C99_FUNC_LRINTF], | |
| 14 | [AC_CACHE_CHECK(for lrintf, | |
| 15 | ac_cv_c99_lrintf, | |
| 16 | [ | |
| 17 | lrintf_save_CFLAGS=$CFLAGS | |
| 18 | CFLAGS="-lm" | |
| 19 | AC_TRY_LINK([ | |
| 20 | #define _ISOC9X_SOURCE 1 | |
| 21 | #define _ISOC99_SOURCE 1 | |
| 22 | #define __USE_ISOC99 1 | |
| 23 | #define __USE_ISOC9X 1 | |
| 24 | ||
| 25 | #include <math.h> | |
| 26 | ], if (!lrintf(3.14159)) lrintf(2.7183);, ac_cv_c99_lrintf=yes, ac_cv_c99_lrintf=no) | |
| 27 | ||
| 28 | CFLAGS=$lrintf_save_CFLAGS | |
| 29 | ||
| 30 | ]) | |
| 31 | ||
| 32 | if test "$ac_cv_c99_lrintf" = yes; then | |
| 33 | AC_DEFINE(HAVE_LRINTF, 1, | |
| 34 | [Define if you have C99's lrintf function.]) | |
| 35 | fi | |
| 36 | ])# AC_C99_FUNC_LRINTF | |
| 37 |