Restrict to linux and gnu targets as not all math.h implementations support the issignaling macro.

Restrict to linux and gnu targets as not all math.h implementations support the
issignaling macro. Use -fexcess-precision=standard for compiler options. Use fabs()
only when  __FLT_EVAL_METHOD__ == 0.

gcc/testsuite/
	* gcc.dg/pr61441.c: Restrict to linux and gnu targets.
	Use -fexcess-precision=standard for compiler options.
	Use fabs() only when  __FLT_EVAL_METHOD__ == 0.

From-SVN: r232152

gcc/testsuite/ChangeLog

+2016-01-08  Sujoy Saraswati  <sujoy.saraswati@hpe.com>
+
+	PR tree-optimization/61441
+	* gcc.dg/pr61441.c: Restrict to linux and gnu targets.
+	Use -fexcess-precision=standard for compiler options.
+	Use fabs() only when  __FLT_EVAL_METHOD__ == 0.
+
 2016-01-08  Jakub Jelinek  <jakub@redhat.com>
 
 	PR fortran/69128

gcc/testsuite/gcc.dg/pr61441.c

-/* { dg-do run } */
-/* { dg-options "-O1 -lm" } */
+/* { dg-do run { target { *-*-linux* *-*-gnu* } } } */
+/* { dg-options "-O1 -lm -fexcess-precision=standard" } */
 
 #define _GNU_SOURCE
 #include <stdio.h>
@@ -56,6 +56,8 @@ int main (void)
   operation(Add);
   operation(Mult);
   operation(Div);
+#if __FLT_EVAL_METHOD__ == 0
   operation(Abs);
+#endif
   return 0;
 }