new file mode 100644
@@ -0,0 +1,14 @@
+/* { dg-do run } */
+/* { dg-options "-O -mfp16-format=ieee" } */
+
+/* Conversion of infinity to __fp16 and back again should preserve the
+ value. */
+volatile float f = __builtin_inf ();
+
+int main ()
+{
+ __fp16 h = f;
+ if (h != __builtin_inf ())
+ __builtin_abort ();
+ return 0;
+}
@@ -35,9 +35,12 @@ __gnu_f2h_internal(unsigned int a, int ieee)
{
if (!ieee)
return sign;
+ if (mantissa == 0)
+ return sign | 0x7c00; /* Infinity. */
+ /* Remaining cases are NaNs. Convert SNaN to QNaN. */
return sign | 0x7e00 | (mantissa >> 13);
}
-
+
if (aexp == 0 && mantissa == 0)
return sign;
@@ -49,7 +52,7 @@ __gnu_f2h_internal(unsigned int a, int ieee)
{
mask = 0x00ffffff;
if (aexp >= -25)
- mask >>= 25 + aexp;
+ mask >>= 25 + aexp;
}
else
mask = 0x00001fff;