diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2010-12-07 15:37:34 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2010-12-07 15:37:34 +0000 |
| commit | 21d6ebde76e9e7a89f5d2100816aac920cae109c (patch) | |
| tree | f1b45eed25f9bc0b9ba2d9026eea7d14bc85eeee /fpu | |
| parent | d3587ef81db34885189178d53f99831aea95c702 (diff) | |
softfloat: Add float*_is_any_nan() functions
Add float*_is_any_nan() functions which return true if the argument
is a NaN of any kind (quiet or signalling).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Nathan Froyd <froydnj@codesourcery.com>
Diffstat (limited to 'fpu')
| -rw-r--r-- | fpu/softfloat.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fpu/softfloat.h b/fpu/softfloat.h index 9528825522..9bece80d4d 100644 --- a/fpu/softfloat.h +++ b/fpu/softfloat.h @@ -314,6 +314,11 @@ INLINE int float32_is_zero(float32 a) return (float32_val(a) & 0x7fffffff) == 0; } +INLINE int float32_is_any_nan(float32 a) +{ + return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL); +} + #define float32_zero make_float32(0) #define float32_one make_float32(0x3f800000) #define float32_ln2 make_float32(0x3f317218) @@ -386,6 +391,11 @@ INLINE int float64_is_zero(float64 a) return (float64_val(a) & 0x7fffffffffffffffLL) == 0; } +INLINE int float64_is_any_nan(float64 a) +{ + return ((float64_val(a) & ~(1ULL << 63)) > 0x7ff0000000000000ULL); +} + #define float64_zero make_float64(0) #define float64_one make_float64(0x3ff0000000000000LL) #define float64_ln2 make_float64(0x3fe62e42fefa39efLL) |