[Qemu-devel] [PATCH 1/4] softfloat: Add float32_is_zero_or_denormal() function

[Peter Maydell <peter.maydell@linaro.org>]

Add a utility function to softfloat to test whether a float32
is zero or denormal.

Signed-off-by: Peter Maydell <peter.maydell@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