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softfloat: move all default NaN definitions to softfloat.h.
These special values are needed to implement some helper functions, which return/use these values in some cases. Signed-off-by: Christophe Lyon <christophe.lyon@st.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Christophe Lyon
Aurelien Jarno
parent
fb1ba03ab0
commit
8559666ddb
@ -30,12 +30,6 @@ these four paragraphs for those parts of this code that are retained.
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=============================================================================*/
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#if defined(TARGET_MIPS) || defined(TARGET_SH4)
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#define SNAN_BIT_IS_ONE 1
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#else
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#define SNAN_BIT_IS_ONE 0
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#endif
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/*----------------------------------------------------------------------------
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| Raises the exceptions specified by `flags'. Floating-point traps can be
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| defined here if desired. It is currently not possible for such a trap
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@ -56,17 +50,6 @@ typedef struct {
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bits64 high, low;
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} commonNaNT;
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/*----------------------------------------------------------------------------
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| The pattern for a default generated half-precision NaN.
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*----------------------------------------------------------------------------*/
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#if defined(TARGET_ARM)
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#define float16_default_nan make_float16(0x7E00)
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#elif SNAN_BIT_IS_ONE
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#define float16_default_nan make_float16(0x7DFF)
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#else
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#define float16_default_nan make_float16(0xFE00)
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#endif
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/*----------------------------------------------------------------------------
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| Returns 1 if the half-precision floating-point value `a' is a quiet
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| NaN; otherwise returns 0.
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@ -157,19 +140,6 @@ static float16 commonNaNToFloat16(commonNaNT a STATUS_PARAM)
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}
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}
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/*----------------------------------------------------------------------------
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| The pattern for a default generated single-precision NaN.
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*----------------------------------------------------------------------------*/
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#if defined(TARGET_SPARC)
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#define float32_default_nan make_float32(0x7FFFFFFF)
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#elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA)
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#define float32_default_nan make_float32(0x7FC00000)
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#elif SNAN_BIT_IS_ONE
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#define float32_default_nan make_float32(0x7FBFFFFF)
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#else
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#define float32_default_nan make_float32(0xFFC00000)
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#endif
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/*----------------------------------------------------------------------------
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| Returns 1 if the single-precision floating-point value `a' is a quiet
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| NaN; otherwise returns 0.
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@ -412,19 +382,6 @@ static float32 propagateFloat32NaN( float32 a, float32 b STATUS_PARAM)
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}
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}
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/*----------------------------------------------------------------------------
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| The pattern for a default generated double-precision NaN.
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*----------------------------------------------------------------------------*/
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#if defined(TARGET_SPARC)
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#define float64_default_nan make_float64(LIT64( 0x7FFFFFFFFFFFFFFF ))
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#elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA)
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#define float64_default_nan make_float64(LIT64( 0x7FF8000000000000 ))
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#elif SNAN_BIT_IS_ONE
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#define float64_default_nan make_float64(LIT64( 0x7FF7FFFFFFFFFFFF ))
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#else
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#define float64_default_nan make_float64(LIT64( 0xFFF8000000000000 ))
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#endif
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/*----------------------------------------------------------------------------
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| Returns 1 if the double-precision floating-point value `a' is a quiet
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| NaN; otherwise returns 0.
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@ -563,19 +520,6 @@ static float64 propagateFloat64NaN( float64 a, float64 b STATUS_PARAM)
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#ifdef FLOATX80
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/*----------------------------------------------------------------------------
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| The pattern for a default generated extended double-precision NaN. The
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| `high' and `low' values hold the most- and least-significant bits,
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| respectively.
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*----------------------------------------------------------------------------*/
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#if SNAN_BIT_IS_ONE
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#define floatx80_default_nan_high 0x7FFF
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#define floatx80_default_nan_low LIT64( 0xBFFFFFFFFFFFFFFF )
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#else
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#define floatx80_default_nan_high 0xFFFF
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#define floatx80_default_nan_low LIT64( 0xC000000000000000 )
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#endif
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/*----------------------------------------------------------------------------
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| Returns 1 if the extended double-precision floating-point value `a' is a
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| quiet NaN; otherwise returns 0. This slightly differs from the same
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@ -727,18 +671,6 @@ static floatx80 propagateFloatx80NaN( floatx80 a, floatx80 b STATUS_PARAM)
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#ifdef FLOAT128
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/*----------------------------------------------------------------------------
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| The pattern for a default generated quadruple-precision NaN. The `high' and
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| `low' values hold the most- and least-significant bits, respectively.
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*----------------------------------------------------------------------------*/
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#if SNAN_BIT_IS_ONE
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#define float128_default_nan_high LIT64( 0x7FFF7FFFFFFFFFFF )
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#define float128_default_nan_low LIT64( 0xFFFFFFFFFFFFFFFF )
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#else
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#define float128_default_nan_high LIT64( 0xFFFF800000000000 )
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#define float128_default_nan_low LIT64( 0x0000000000000000 )
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#endif
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/*----------------------------------------------------------------------------
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| Returns 1 if the quadruple-precision floating-point value `a' is a quiet
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| NaN; otherwise returns 0.
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@ -77,6 +77,12 @@ typedef int64_t sbits64;
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#define LIT64( a ) a##LL
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#define INLINE static inline
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#if defined(TARGET_MIPS) || defined(TARGET_SH4)
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#define SNAN_BIT_IS_ONE 1
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#else
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#define SNAN_BIT_IS_ONE 0
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#endif
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/*----------------------------------------------------------------------------
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| The macro `FLOATX80' must be defined to enable the extended double-precision
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| floating-point format `floatx80'. If this macro is not defined, the
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@ -277,6 +283,17 @@ int float16_is_quiet_nan( float16 );
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int float16_is_signaling_nan( float16 );
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float16 float16_maybe_silence_nan( float16 );
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/*----------------------------------------------------------------------------
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| The pattern for a default generated half-precision NaN.
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*----------------------------------------------------------------------------*/
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#if defined(TARGET_ARM)
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#define float16_default_nan make_float16(0x7E00)
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#elif SNAN_BIT_IS_ONE
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#define float16_default_nan make_float16(0x7DFF)
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#else
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#define float16_default_nan make_float16(0xFE00)
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#endif
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/*----------------------------------------------------------------------------
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| Software IEC/IEEE single-precision conversion routines.
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*----------------------------------------------------------------------------*/
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@ -366,6 +383,20 @@ INLINE int float32_is_zero_or_denormal(float32 a)
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#define float32_one make_float32(0x3f800000)
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#define float32_ln2 make_float32(0x3f317218)
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/*----------------------------------------------------------------------------
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| The pattern for a default generated single-precision NaN.
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*----------------------------------------------------------------------------*/
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#if defined(TARGET_SPARC)
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#define float32_default_nan make_float32(0x7FFFFFFF)
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#elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA)
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#define float32_default_nan make_float32(0x7FC00000)
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#elif SNAN_BIT_IS_ONE
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#define float32_default_nan make_float32(0x7FBFFFFF)
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#else
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#define float32_default_nan make_float32(0xFFC00000)
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#endif
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/*----------------------------------------------------------------------------
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| Software IEC/IEEE double-precision conversion routines.
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*----------------------------------------------------------------------------*/
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@ -452,6 +483,19 @@ INLINE int float64_is_any_nan(float64 a)
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#define float64_one make_float64(0x3ff0000000000000LL)
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#define float64_ln2 make_float64(0x3fe62e42fefa39efLL)
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/*----------------------------------------------------------------------------
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| The pattern for a default generated double-precision NaN.
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*----------------------------------------------------------------------------*/
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#if defined(TARGET_SPARC)
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#define float64_default_nan make_float64(LIT64( 0x7FFFFFFFFFFFFFFF ))
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#elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA)
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#define float64_default_nan make_float64(LIT64( 0x7FF8000000000000 ))
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#elif SNAN_BIT_IS_ONE
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#define float64_default_nan make_float64(LIT64( 0x7FF7FFFFFFFFFFFF ))
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#else
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#define float64_default_nan make_float64(LIT64( 0xFFF8000000000000 ))
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#endif
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#ifdef FLOATX80
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/*----------------------------------------------------------------------------
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@ -520,6 +564,19 @@ INLINE int floatx80_is_any_nan(floatx80 a)
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return ((a.high & 0x7fff) == 0x7fff) && (a.low<<1);
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}
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/*----------------------------------------------------------------------------
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| The pattern for a default generated extended double-precision NaN. The
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| `high' and `low' values hold the most- and least-significant bits,
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| respectively.
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*----------------------------------------------------------------------------*/
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#if SNAN_BIT_IS_ONE
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#define floatx80_default_nan_high 0x7FFF
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#define floatx80_default_nan_low LIT64( 0xBFFFFFFFFFFFFFFF )
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#else
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#define floatx80_default_nan_high 0xFFFF
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#define floatx80_default_nan_low LIT64( 0xC000000000000000 )
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#endif
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#endif
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#ifdef FLOAT128
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@ -593,6 +650,18 @@ INLINE int float128_is_any_nan(float128 a)
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((a.low != 0) || ((a.high & 0xffffffffffffLL) != 0));
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}
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/*----------------------------------------------------------------------------
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| The pattern for a default generated quadruple-precision NaN. The `high' and
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| `low' values hold the most- and least-significant bits, respectively.
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*----------------------------------------------------------------------------*/
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#if SNAN_BIT_IS_ONE
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#define float128_default_nan_high LIT64( 0x7FFF7FFFFFFFFFFF )
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#define float128_default_nan_low LIT64( 0xFFFFFFFFFFFFFFFF )
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#else
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#define float128_default_nan_high LIT64( 0xFFFF800000000000 )
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#define float128_default_nan_low LIT64( 0x0000000000000000 )
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#endif
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#endif
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#else /* CONFIG_SOFTFLOAT */
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