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| author |   aurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-12-15 17:14:12 +0000 |
|---|---|---|
| committer | aurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-12-15 17:14:12 +0000 |
| commit | 1b2ad2ec7a79634f8186098dbe34a162d4851ded (patch) | |
| tree | bd29a7a8dd2631f1226d9e6e9e540578c6786cc8 /fpu | |
| parent | target-ppc: correctly propagate NaN in division (diff) | |
| download | qemu-kvm-1b2ad2ec7a79634f8186098dbe34a162d4851ded.tar.gz qemu-kvm-1b2ad2ec7a79634f8186098dbe34a162d4851ded.tar.bz2 qemu-kvm-1b2ad2ec7a79634f8186098dbe34a162d4851ded.zip | |
softfloat-native: fix *nan()
Fix float64_is_nan()
Fix floatx80_is_signaling_nan()
Add floatx80_is_nan()
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6049 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'fpu')
| -rw-r--r-- | fpu/softfloat-native.c | 15 | ||||
| -rw-r--r-- | fpu/softfloat-native.h | 1 |
2 files changed, 15 insertions, 1 deletions
diff --git a/fpu/softfloat-native.c b/fpu/softfloat-native.c index cd88113f9..7273ae5b4 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 ) ); } @@ -507,6 +507,19 @@ 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; return ( ( u.i.high & 0x7FFF ) == 0x7FFF ) && (bits64) ( u.i.low<<1 ); } diff --git a/fpu/softfloat-native.h b/fpu/softfloat-native.h index 817a2a813..f0a7c2e53 100644 --- a/fpu/softfloat-native.h +++ b/fpu/softfloat-native.h @@ -425,6 +425,7 @@ INLINE int floatx80_unordered( floatx80 a, floatx80 b STATUS_PARAM) int floatx80_compare( floatx80, floatx80 STATUS_PARAM ); int floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM ); int floatx80_is_signaling_nan( floatx80 ); +int floatx80_is_nan( floatx80 ); INLINE floatx80 floatx80_abs(floatx80 a) { |