LIBS="-lm $all_libraries"

AC_CHECK_DECL(lrint,
          AC_DEFINE(HAVE_LRINT,1,[Define if lrint is supported]),
          AC_DEFINE(HAVE_LRINT,0,[Define if lrint is not supported]),
          [#include <math.h>]
)

AC_CHECK_DECL(lrintf,
          AC_DEFINE(HAVE_LRINTF,1,[Define if lrintf is supported]),
          AC_DEFINE(HAVE_LRINTF,0,[Define if lrintf is not supported]),
          [#include <math.h>]
)