X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=m4%2Froundl.m4;h=3011c378460d2496f47aa4e1c6a68f0d26147d58;hb=062cad2d07081f9a60adbb90fc1184a435a1a93f;hp=1779a31bde87f5b753a61f785bb97ef7afb5ca03;hpb=21e68e5476fd8481aba587291b7985c2379b9f28;p=gnulib.git

diff --git a/m4/roundl.m4 b/m4/roundl.m4
index 1779a31bd..3011c3784 100644
--- a/m4/roundl.m4
+++ b/m4/roundl.m4
@@ -1,5 +1,5 @@
-# roundl.m4 serial 4
-dnl Copyright (C) 2007 Free Software Foundation, Inc.
+# roundl.m4 serial 6
+dnl Copyright (C) 2007, 2009-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -19,7 +19,25 @@ AC_DEFUN([gl_FUNC_ROUNDL],
     AC_CHECK_DECLS([ceill, floorl], , , [#include <math.h>])
     if test "$ac_cv_have_decl_floorl" = yes \
        && test "$ac_cv_have_decl_ceill" = yes; then
-      gl_CHECK_MATH_LIB([ROUNDL_LIBM], [x = floorl (x) + ceill (x);])
+      gl_FUNC_FLOORL_LIBS
+      gl_FUNC_CEILL_LIBS
+      if test "$FLOORL_LIBM" != '?' && test "$CEILL_LIBM" != '?'; then
+        AC_DEFINE([HAVE_FLOORL_AND_CEILL], [1],
+          [Define if the both the floorl() and ceill() functions exist.])
+        ROUNDL_LIBM=
+        dnl Append $FLOORL_LIBM to ROUNDL_LIBM, avoiding gratuitous duplicates.
+        case " $ROUNDL_LIBM " in
+          *" $FLOORL_LIBM "*) ;;
+          *) ROUNDL_LIBM="$ROUNDL_LIBM $FLOORL_LIBM" ;;
+        esac
+        dnl Append $CEILL_LIBM to ROUNDL_LIBM, avoiding gratuitous duplicates.
+        case " $ROUNDL_LIBM " in
+          *" $CEILL_LIBM "*) ;;
+          *) ROUNDL_LIBM="$ROUNDL_LIBM $CEILL_LIBM" ;;
+        esac
+      else
+        ROUNDL_LIBM=
+      fi
     else
       ROUNDL_LIBM=
     fi