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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gcc.target/alpha/980217-1.c
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Diffstat (limited to 'gcc/testsuite/gcc.target/alpha/980217-1.c')
-rw-r--r--gcc/testsuite/gcc.target/alpha/980217-1.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/alpha/980217-1.c b/gcc/testsuite/gcc.target/alpha/980217-1.c
new file mode 100644
index 000000000..e4ecf69fd
--- /dev/null
+++ b/gcc/testsuite/gcc.target/alpha/980217-1.c
@@ -0,0 +1,39 @@
+/* Test float on alpha. */
+
+/* { dg-do run } */
+/* { dg-options "-mieee -O2" } */
+
+extern void abort(void);
+extern int printf(const char *, ...);
+
+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;
+}