1 files changed, 50 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/dfp/signbit-1.c b/gcc/testsuite/gcc.dg/dfp/signbit-1.c
new file mode 100644
index 00000000000..cde28f9ba84
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/dfp/signbit-1.c
@@ -0,0 +1,50 @@
+/* { dg-options "-O0 -std=gnu99" } */
+
+/* Decimal float versions of __builtin_signbit.  */
+
+extern void abort (void);
+int failures;
+
+#ifdef DBG
+extern int printf (const char *, ...);
+#define FAILURE { printf ("failed at line %d\n", __LINE__); failures++; }
+#else
+#define FAILURE abort ();
+#endif
+
+#define CHECK32(D,I) \
+  if ((__builtin_signbitd32 (D) != 0) != I) FAILURE
+
+#define CHECK64(D,I) \
+  if ((__builtin_signbitd64 (D) != 0) != I) FAILURE
+
+#define CHECK128(D,I) \
+  if ((__builtin_signbitd128 (D) != 0) != I) FAILURE
+
+/* Prevent the compiler from folding the calls at compile time.  */
+volatile _Decimal32 sd;
+volatile _Decimal64 dd;
+volatile _Decimal128 td;
+
+int
+main ()
+{
+  sd = 1.9df;  CHECK32 (sd, 0)
+  sd = -5.3df; CHECK32 (sd, 1)
+  sd = 0.0df;  CHECK32 (sd, 0)
+  sd = -0.0df; CHECK32 (sd, 1)
+
+  dd = 1.9dd;  CHECK64 (dd, 0)
+  dd = -5.3dd; CHECK64 (dd, 1)
+  dd = 0.0dd;  CHECK64 (dd, 0)
+  dd = -0.0dd; CHECK64 (dd, 1)
+
+  td = 1.9dl;  CHECK128 (td, 0)
+  td = -5.3dl; CHECK128 (td, 1)
+  td = 0.0dl;  CHECK128 (td, 0)
+  td = -0.0dl; CHECK128 (td, 1)
+
+  if (failures != 0)
+    abort ();
+  return 0;
+}