Another test case

[hjl at lucon dot org (H.J. Lu)]

Hi,

Here is another new test case for alpha. I'd like to see it in
1.0.2.

Thanks.


-- 
H.J. Lu (hjl@gnu.org)
----
Tue Feb 17 08:17:42 1998  H.J. Lu  (hjl@gnu.org)

	* gcc.dg/980217-1.c: New to test IEEE float on alpha.

--- /dev/null	Wed Dec 31 16:00:00 1969
+++ gcc.dg/980217-1.c	Tue Feb 17 13:17:25 1998
@@ -0,0 +1,36 @@
+/* Test float on alpha. */
+
+/* { dg-do run { target alpha*-*-* } } */
+/* { dg-options "-mieee -O2" } */
+
+typedef int int32_t __attribute__ ((__mode__ (  __SI__ ))) ;
+typedef union
+{
+  float value;
+  int32_t word;
+} ieee_float_shape_type;
+
+int isinff(float x)
+{
+  int32_t ix,t;
+  ieee_float_shape_type gf_u;
+  gf_u.value = x;
+  ix = gf_u.word;
+  printf ("%x\n", ix);
+  t = ix & 0x7fffffff;
+  t ^= 0x7f800000;
+  t |= -t;
+  return ~(t >> 31) & (1 - ((ix & 0x80000000) >> 30));
+}
+
+main ()
+{
+  float x = 1.0 / 0.0;
+  int i = isinff (x);
+
+  if (i == 0)
+    abort ();
+
+  printf ("%d\n", i);
+  return 0;
+}