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| author | Peter Maydell <peter.maydell@linaro.org> | 2011-01-14 20:39:18 +0100 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2011-01-14 20:39:18 +0100 |
| commit | 6f3300ad2b5a1e7090720993d9fcb9f550259e12 (patch) | |
| tree | 722a152d19451b6280bdd05cb3309284ababf6f8 | |
| parent | 3bd4be3ada596bbed81fe955c963bb6a64335011 (diff) | |
softfloat: Add float32_is_zero_or_denormal() function
Add a utility function to softfloat to test whether a float32
is zero or denormal.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
| -rw-r--r-- | fpu/softfloat.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fpu/softfloat.h b/fpu/softfloat.h index a6d0f16b42..4a5345ceca 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) |