From 2bed652fc596dee09f27dd7ab20528cf5eaf9203 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Thu, 6 Jan 2011 18:34:43 +0000 Subject: 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 Signed-off-by: Peter Maydell Signed-off-by: Riku Voipio --- fpu/softfloat.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'fpu') diff --git a/fpu/softfloat.h b/fpu/softfloat.h index 15052cc470..a6d0f16b42 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 */ -- cgit v1.2.3