Add a utility function to softfloat to test whether a float32
is zero or denormal.
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
---
fpu/softfloat.h | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/fpu/softfloat.h b/fpu/softfloat.h
index 15052cc..1acf7af 100644
--- a/fpu/softfloat.h
+++ b/fpu/softfloat.h
@@ -336,6 +336,11 @@ INLINE int float32_is_any_nan(float32 a)
return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL);
}
+INLINE int float32_is_zero_or_denormal(float32 a)
+{
+ return (float32_val(a) & 0x7f800000) == 0;
+}
+
#define float32_zero make_float32(0)
#define float32_one make_float32(0x3f800000)
#define float32_ln2 make_float32(0x3f317218)
--
1.6.3.3
