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| author |   aurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-12-13 11:46:15 +0000 |
|---|---|---|
| committer | aurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-12-13 11:46:15 +0000 |
| commit | 629bd74a4fcb68dbec658da455fa1143315ec646 (patch) | |
| tree | d1c3764138fd1f3625725f0ab0fd15e44f400745 /fpu/softfloat-native.c | |
| parent | Fix warning about unused shm_regions (diff) | |
| download | qemu-kvm-629bd74a4fcb68dbec658da455fa1143315ec646.tar.gz qemu-kvm-629bd74a4fcb68dbec658da455fa1143315ec646.tar.bz2 qemu-kvm-629bd74a4fcb68dbec658da455fa1143315ec646.zip | |
softfloat-native: add float32_is_nan()
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6002 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'fpu/softfloat-native.c')
| -rw-r--r-- | fpu/softfloat-native.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fpu/softfloat-native.c b/fpu/softfloat-native.c index e58551f33..0b24bab32 100644 --- a/fpu/softfloat-native.c +++ b/fpu/softfloat-native.c @@ -250,6 +250,15 @@ int float32_is_signaling_nan( float32 a1) return ( ( ( a>>22 ) & 0x1FF ) == 0x1FE ) && ( a & 0x003FFFFF ); } +int float32_is_nan( float32 a1 ) +{ + float32u u; + uint64_t a; + u.f = a1; + a = u.i; + return ( 0xFF800000 < ( a<<1 ) ); +} + /*---------------------------------------------------------------------------- | Software IEC/IEEE double-precision conversion routines. *----------------------------------------------------------------------------*/ |