diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.target/alpha/980217-1.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.target/alpha/980217-1.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.target/alpha/980217-1.c b/gcc-4.9/gcc/testsuite/gcc.target/alpha/980217-1.c new file mode 100644 index 000000000..e4ecf69fd --- /dev/null +++ b/gcc-4.9/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; +} |