From 1b2ad2ec7a79634f8186098dbe34a162d4851ded Mon Sep 17 00:00:00 2001 From: aurel32 Date: Mon, 15 Dec 2008 17:14:12 +0000 Subject: softfloat-native: fix *nan() Fix float64_is_nan() Fix floatx80_is_signaling_nan() Add floatx80_is_nan() Signed-off-by: Aurelien Jarno git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6049 c046a42c-6fe2-441c-8c8c-71466251a162 --- fpu/softfloat-native.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'fpu/softfloat-native.c') diff --git a/fpu/softfloat-native.c b/fpu/softfloat-native.c index cd88113f9e..7273ae5b4f 100644 --- a/fpu/softfloat-native.c +++ b/fpu/softfloat-native.c @@ -431,7 +431,7 @@ int float64_is_nan( float64 a1 ) u.f = a1; a = u.i; - return ( LIT64( 0xFFE0000000000000 ) < (bits64) ( a<<1 ) ); + return ( LIT64( 0xFFF0000000000000 ) < (bits64) ( a<<1 ) ); } @@ -505,6 +505,19 @@ int floatx80_compare_quiet( floatx80 a, floatx80 b STATUS_PARAM ) } } int floatx80_is_signaling_nan( floatx80 a1) +{ + floatx80u u; + uint64_t aLow; + u.f = a1; + + aLow = u.i.low & ~ LIT64( 0x4000000000000000 ); + return + ( ( u.i.high & 0x7FFF ) == 0x7FFF ) + && (bits64) ( aLow<<1 ) + && ( u.i.low == aLow ); +} + +int floatx80_is_nan( floatx80 a1 ) { floatx80u u; u.f = a1; -- cgit v1.2.3