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authorPeter Maydell <peter.maydell@linaro.org>2011-01-06 18:34:43 +0000
committerRiku Voipio <riku.voipio@iki.fi>2011-01-07 17:35:48 +0200
commit2bed652fc596dee09f27dd7ab20528cf5eaf9203 (patch)
treea86728ad4abbf27f35b5be18ebd3794105efc5fa
parent285da2b9a83353703d07e141fdb447e82944146c (diff)
softfloat: Implement floatx80_is_any_nan() and float128_is_any_nan()
Implement versions of float*_is_any_nan() for the floatx80 and float128 types. Acked-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
-rw-r--r--fpu/softfloat.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/fpu/softfloat.h b/fpu/softfloat.h
index 15052cc47..a6d0f16b4 100644
--- a/fpu/softfloat.h
+++ b/fpu/softfloat.h
@@ -489,6 +489,11 @@ INLINE int floatx80_is_zero(floatx80 a)
return (a.high & 0x7fff) == 0 && a.low == 0;
}
+INLINE int floatx80_is_any_nan(floatx80 a)
+{
+ return ((a.high & 0x7fff) == 0x7fff) && (a.low<<1);
+}
+
#endif
#ifdef FLOAT128
@@ -556,6 +561,12 @@ INLINE int float128_is_zero(float128 a)
return (a.high & 0x7fffffffffffffffLL) == 0 && a.low == 0;
}
+INLINE int float128_is_any_nan(float128 a)
+{
+ return ((a.high >> 48) & 0x7fff) == 0x7fff &&
+ ((a.low != 0) || ((a.high & 0xffffffffffffLL) != 0));
+}
+
#endif
#else /* CONFIG_SOFTFLOAT */