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softfloat-macros.h 23.8 kB
softfloat-native.c 11 kB
softfloat-native.h 13.2 kB
softfloat-specialize.h 26 kB
softfloat.c 213.4 kB
softfloat.h 20.8 kB

Latest revisions

# Date Author Comment
de4af5f7 01/20/2011 01:37 pm Aurelien Jarno

softfloat: fix floatx80_is_{quiet,signaling}_nan()

floatx80_is_{quiet,signaling}_nan() functions are incorrectly detecting
the type of NaN, depending on SNAN_BIT_IS_ONE, one of the two is
returning the correct value, and the other true for any kind of NaN....
6f3300ad 01/14/2011 09:39 pm Peter Maydell

softfloat: Add float32_is_zero_or_denormal() function

Add a utility function to softfloat to test whether a float32
is zero or denormal.

Signed-off-by: Peter Maydell <>
Reviewed-by: Aurelien Jarno <>
Signed-off-by: Aurelien Jarno <>
e9087750 01/14/2011 09:39 pm Aurelien Jarno

softfloat: SH4 has the sNaN bit set

Signed-off-by: Aurelien Jarno <>
10201602 01/14/2011 09:39 pm Aurelien Jarno

softfloat: fix default-NaN mode

When the default-NaN mode is enabled, it should return the default NaN
value, but it should anyway raise the invalid operation flag if one of
the operand is an sNaN.

I have checked that this behavior matches the ARM and SH4 manuals, as...
2bed652f 01/07/2011 05:35 pm Peter Maydell

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 <>
37d18660 01/06/2011 11:16 pm Peter Maydell

softfloat: Implement flushing input denormals to zero

Add support to softfloat for flushing input denormal float32 and float64
to zero. softfloat's existing 'flush_to_zero' flag only flushes denormals
to zero on output. Some CPUs need input denormals to be flushed before...
e024e881 01/06/2011 05:29 pm Aurelien Jarno

target-ppc: Implement correct NaN propagation rules

Implement the correct NaN propagation rules for PowerPC targets by
providing an appropriate pickNaN function.

Also fix the #ifdef tests for default NaN definition, the correct name
is TARGET_PPC instead of TARGET_POWERPC....
084d19ba 01/06/2011 05:29 pm Aurelien Jarno

target-mips: Implement correct NaN propagation rules

Implement the correct NaN propagation rules for MIPS targets by
providing an appropriate pickNaN function.

Signed-off-by: Aurelien Jarno <>
1f398e08 01/06/2011 05:29 pm Aurelien Jarno

softfloat: use float{32,64,x80,128}_maybe_silence_nan()

Use float{32,64,x80,128}_maybe_silence_nan() instead of toggling the
sNaN bit manually. This allow per target implementation of sNaN to qNaN
conversion.

Signed-off-by: Aurelien Jarno <>...
f6a7d92a 01/06/2011 05:29 pm Aurelien Jarno

softfloat: add float{x80,128}_maybe_silence_nan()

Add float{x80,128}_maybe_silence_nan() functions, they will be need by
propagateFloat{x80,128}NaN().

Reviewed-by: Peter Maydell <>
Signed-off-by: Aurelien Jarno <>

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