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authorPeter Maydell <peter.maydell@linaro.org>2010-12-07 15:37:34 +0000
committerPeter Maydell <peter.maydell@linaro.org>2010-12-07 15:37:34 +0000
commit21d6ebde76e9e7a89f5d2100816aac920cae109c (patch)
treef1b45eed25f9bc0b9ba2d9026eea7d14bc85eeee
parentd3587ef81db34885189178d53f99831aea95c702 (diff)
downloadqemu-arm-21d6ebde76e9e7a89f5d2100816aac920cae109c.tar.gz
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>
-rw-r--r--fpu/softfloat.h10
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)