Make truncl work on OSF/1 4.0.

[pspp] / lib / math.in.h

diff --git a/lib/math.in.h b/lib/math.in.h
index c2b8b81071c59656706b44667619522eec7477ba..f500824813247866904a9a003cdde31e02889390 100644 (file)
--- a/lib/math.in.h
+++ b/lib/math.in.h
@@ -351,7 +351,8 @@ extern double trunc (double x);
 #endif
 
 #if @GNULIB_TRUNCL@
-# if !@HAVE_DECL_TRUNCL@
+# if @REPLACE_TRUNCL@
+#  undef truncl
 #  define truncl rpl_truncl
 extern long double truncl (long double x);
 # endif