@@ -816,11 +816,11 @@
 esac
 
 AC_CHECK_LIB(m, fmod, LIBS="$LIBS -lm")
 AC_CHECK_LIB(complex, creal, TESTS_LIBS="$TESTS_LIBS -lcomplex")
 
-AC_CHECK_FUNCS(strtof)
+AC_CHECK_FUNCS(strtof truncf)
 
 AC_CHECK_FUNC(asprintf, [
 	case "$host" in
 	*-*-mingw*)
 		dnl asprintf from MinGW is broken on older Windows versions