diff options
Diffstat (limited to 'fpu')
| -rw-r--r-- | fpu/softfloat-specialize.h | 72 | ||||
| -rw-r--r-- | fpu/softfloat.h | 60 |
2 files changed, 81 insertions, 51 deletions
diff --git a/fpu/softfloat-specialize.h b/fpu/softfloat-specialize.h index c7d35a1..c165205 100644 --- a/fpu/softfloat-specialize.h +++ b/fpu/softfloat-specialize.h @@ -35,6 +35,78 @@ these four paragraphs for those parts of this code that are retained. =============================================================================*/ +#if defined(TARGET_MIPS) || defined(TARGET_SH4) || defined(TARGET_UNICORE32) +#define SNAN_BIT_IS_ONE 1 +#else +#define SNAN_BIT_IS_ONE 0 +#endif + +/*---------------------------------------------------------------------------- +| The pattern for a default generated half-precision NaN. +*----------------------------------------------------------------------------*/ +#if defined(TARGET_ARM) +const float16 float16_default_nan = const_float16(0x7E00); +#elif SNAN_BIT_IS_ONE +const float16 float16_default_nan = const_float16(0x7DFF); +#else +const float16 float16_default_nan = const_float16(0xFE00); +#endif + +/*---------------------------------------------------------------------------- +| The pattern for a default generated single-precision NaN. +*----------------------------------------------------------------------------*/ +#if defined(TARGET_SPARC) +const float32 float32_default_nan = const_float32(0x7FFFFFFF); +#elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) +const float32 float32_default_nan = const_float32(0x7FC00000); +#elif SNAN_BIT_IS_ONE +const float32 float32_default_nan = const_float32(0x7FBFFFFF); +#else +const float32 float32_default_nan = const_float32(0xFFC00000); +#endif + +/*---------------------------------------------------------------------------- +| The pattern for a default generated double-precision NaN. +*----------------------------------------------------------------------------*/ +#if defined(TARGET_SPARC) +const float64 float64_default_nan = const_float64(LIT64( 0x7FFFFFFFFFFFFFFF )); +#elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) +const float64 float64_default_nan = const_float64(LIT64( 0x7FF8000000000000 )); +#elif SNAN_BIT_IS_ONE +const float64 float64_default_nan = const_float64(LIT64( 0x7FF7FFFFFFFFFFFF )); +#else +const float64 float64_default_nan = const_float64(LIT64( 0xFFF8000000000000 )); +#endif + +/*---------------------------------------------------------------------------- +| The pattern for a default generated extended double-precision NaN. +*----------------------------------------------------------------------------*/ +#if SNAN_BIT_IS_ONE +#define floatx80_default_nan_high 0x7FFF +#define floatx80_default_nan_low LIT64( 0xBFFFFFFFFFFFFFFF ) +#else +#define floatx80_default_nan_high 0xFFFF +#define floatx80_default_nan_low LIT64( 0xC000000000000000 ) +#endif + +const floatx80 floatx80_default_nan = make_floatx80(floatx80_default_nan_high, + floatx80_default_nan_low); + +/*---------------------------------------------------------------------------- +| The pattern for a default generated quadruple-precision NaN. The `high' and +| `low' values hold the most- and least-significant bits, respectively. +*----------------------------------------------------------------------------*/ +#if SNAN_BIT_IS_ONE +#define float128_default_nan_high LIT64( 0x7FFF7FFFFFFFFFFF ) +#define float128_default_nan_low LIT64( 0xFFFFFFFFFFFFFFFF ) +#else +#define float128_default_nan_high LIT64( 0xFFFF800000000000 ) +#define float128_default_nan_low LIT64( 0x0000000000000000 ) +#endif + +const float128 float128_default_nan = make_float128(float128_default_nan_high, + float128_default_nan_low); + /*---------------------------------------------------------------------------- | Raises the exceptions specified by `flags'. Floating-point traps can be | defined here if desired. It is currently not possible for such a trap diff --git a/fpu/softfloat.h b/fpu/softfloat.h index bde2500..3bb7d8f 100644 --- a/fpu/softfloat.h +++ b/fpu/softfloat.h @@ -43,7 +43,7 @@ these four paragraphs for those parts of this code that are retained. #endif #include <inttypes.h> -#include "config.h" +#include "config-host.h" /*---------------------------------------------------------------------------- | Each of the following `typedef's defines the most convenient type that holds @@ -68,12 +68,6 @@ typedef int64_t int64; #define LIT64( a ) a##LL #define INLINE static inline -#if defined(TARGET_MIPS) || defined(TARGET_SH4) || defined(TARGET_UNICORE32) -#define SNAN_BIT_IS_ONE 1 -#else -#define SNAN_BIT_IS_ONE 0 -#endif - #define STATUS_PARAM , float_status *status #define STATUS(field) status->field #define STATUS_VAR , status @@ -142,6 +136,7 @@ typedef struct { uint64_t low, high; #endif } float128; +#define make_float128(high_, low_) ((float128) { .high = high_, .low = low_ }) /*---------------------------------------------------------------------------- | Software IEC/IEEE floating-point underflow tininess-detection mode. @@ -248,13 +243,7 @@ float16 float16_maybe_silence_nan( float16 ); /*---------------------------------------------------------------------------- | The pattern for a default generated half-precision NaN. *----------------------------------------------------------------------------*/ -#if defined(TARGET_ARM) -#define float16_default_nan make_float16(0x7E00) -#elif SNAN_BIT_IS_ONE -#define float16_default_nan make_float16(0x7DFF) -#else -#define float16_default_nan make_float16(0xFE00) -#endif +extern const float16 float16_default_nan; /*---------------------------------------------------------------------------- | Software IEC/IEEE single-precision conversion routines. @@ -357,15 +346,7 @@ INLINE float32 float32_set_sign(float32 a, int sign) /*---------------------------------------------------------------------------- | The pattern for a default generated single-precision NaN. *----------------------------------------------------------------------------*/ -#if defined(TARGET_SPARC) -#define float32_default_nan make_float32(0x7FFFFFFF) -#elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) -#define float32_default_nan make_float32(0x7FC00000) -#elif SNAN_BIT_IS_ONE -#define float32_default_nan make_float32(0x7FBFFFFF) -#else -#define float32_default_nan make_float32(0xFFC00000) -#endif +extern const float32 float32_default_nan; /*---------------------------------------------------------------------------- | Software IEC/IEEE double-precision conversion routines. @@ -470,15 +451,7 @@ INLINE float64 float64_set_sign(float64 a, int sign) /*---------------------------------------------------------------------------- | The pattern for a default generated double-precision NaN. *----------------------------------------------------------------------------*/ -#if defined(TARGET_SPARC) -#define float64_default_nan make_float64(LIT64( 0x7FFFFFFFFFFFFFFF )) -#elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) -#define float64_default_nan make_float64(LIT64( 0x7FF8000000000000 )) -#elif SNAN_BIT_IS_ONE -#define float64_default_nan make_float64(LIT64( 0x7FF7FFFFFFFFFFFF )) -#else -#define float64_default_nan make_float64(LIT64( 0xFFF8000000000000 )) -#endif +extern const float64 float64_default_nan; /*---------------------------------------------------------------------------- | Software IEC/IEEE extended double-precision conversion routines. @@ -561,17 +534,9 @@ INLINE int floatx80_is_any_nan(floatx80 a) #define floatx80_infinity make_floatx80(0x7fff, 0x8000000000000000LL) /*---------------------------------------------------------------------------- -| The pattern for a default generated extended double-precision NaN. The -| `high' and `low' values hold the most- and least-significant bits, -| respectively. +| The pattern for a default generated extended double-precision NaN. *----------------------------------------------------------------------------*/ -#if SNAN_BIT_IS_ONE -#define floatx80_default_nan_high 0x7FFF -#define floatx80_default_nan_low LIT64( 0xBFFFFFFFFFFFFFFF ) -#else -#define floatx80_default_nan_high 0xFFFF -#define floatx80_default_nan_low LIT64( 0xC000000000000000 ) -#endif +extern const floatx80 floatx80_default_nan; /*---------------------------------------------------------------------------- | Software IEC/IEEE quadruple-precision conversion routines. @@ -648,15 +613,8 @@ INLINE int float128_is_any_nan(float128 a) } /*---------------------------------------------------------------------------- -| The pattern for a default generated quadruple-precision NaN. The `high' and -| `low' values hold the most- and least-significant bits, respectively. +| The pattern for a default generated quadruple-precision NaN. *----------------------------------------------------------------------------*/ -#if SNAN_BIT_IS_ONE -#define float128_default_nan_high LIT64( 0x7FFF7FFFFFFFFFFF ) -#define float128_default_nan_low LIT64( 0xFFFFFFFFFFFFFFFF ) -#else -#define float128_default_nan_high LIT64( 0xFFFF800000000000 ) -#define float128_default_nan_low LIT64( 0x0000000000000000 ) -#endif +extern const float128 float128_default_nan; #endif /* !SOFTFLOAT_H */ |