softfloat: Add float16_is_normal

This float16 predicate was missing from the normal set.

Signed-off-by: Stephen Long <steplong@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h
index 0a5a5e5..863dfc6 100644 (file)
--- a/include/fpu/softfloat.h
+++ b/include/fpu/softfloat.h
@@ -272,6 +272,11 @@ static inline bool float16_is_zero_or_denormal(float16 a)
     return (float16_val(a) & 0x7c00) == 0;
 }
 
+static inline bool float16_is_normal(float16 a)
+{
+    return (((float16_val(a) >> 10) + 1) & 0x1f) >= 2;
+}
+
 static inline float16 float16_abs(float16 a)
 {
     /* Note that abs does *not* handle NaN specially, nor does