diff options
Diffstat (limited to 'fpu/softfloat.h')
| -rw-r--r-- | fpu/softfloat.h | 76 |
1 files changed, 15 insertions, 61 deletions
diff --git a/fpu/softfloat.h b/fpu/softfloat.h index 58c9b7b40c..bde250087b 100644 --- a/fpu/softfloat.h +++ b/fpu/softfloat.h @@ -74,24 +74,6 @@ typedef int64_t int64; #define SNAN_BIT_IS_ONE 0 #endif -/*---------------------------------------------------------------------------- -| The macro `FLOATX80' must be defined to enable the extended double-precision -| floating-point format `floatx80'. If this macro is not defined, the -| `floatx80' type will not be defined, and none of the functions that either -| input or output the `floatx80' type will be defined. The same applies to -| the `FLOAT128' macro and the quadruple-precision format `float128'. -*----------------------------------------------------------------------------*/ -#ifdef CONFIG_SOFTFLOAT -/* bit exact soft float support */ -#define FLOATX80 -#define FLOAT128 -#else -/* native float support */ -#if (defined(__i386__) || defined(__x86_64__)) && !defined(CONFIG_BSD) -#define FLOATX80 -#endif -#endif /* !CONFIG_SOFTFLOAT */ - #define STATUS_PARAM , float_status *status #define STATUS(field) status->field #define STATUS_VAR , status @@ -106,7 +88,6 @@ enum { float_relation_unordered = 2 }; -#ifdef CONFIG_SOFTFLOAT /*---------------------------------------------------------------------------- | Software IEC/IEEE floating-point types. *----------------------------------------------------------------------------*/ @@ -149,14 +130,11 @@ typedef uint64_t float64; #define const_float32(x) (x) #define const_float64(x) (x) #endif -#ifdef FLOATX80 typedef struct { uint64_t low; uint16_t high; } floatx80; #define make_floatx80(exp, mant) ((floatx80) { mant, exp }) -#endif -#ifdef FLOAT128 typedef struct { #ifdef HOST_WORDS_BIGENDIAN uint64_t high, low; @@ -164,7 +142,6 @@ typedef struct { uint64_t low, high; #endif } float128; -#endif /*---------------------------------------------------------------------------- | Software IEC/IEEE floating-point underflow tininess-detection mode. @@ -201,9 +178,7 @@ typedef struct float_status { signed char float_detect_tininess; signed char float_rounding_mode; signed char float_exception_flags; -#ifdef FLOATX80 signed char floatx80_rounding_precision; -#endif /* should denormalised results go to zero and set the inexact flag? */ flag flush_to_zero; /* should denormalised inputs go to zero and set the input_denormal flag? */ @@ -233,9 +208,7 @@ INLINE int get_float_exception_flags(float_status *status) { return STATUS(float_exception_flags); } -#ifdef FLOATX80 void set_floatx80_rounding_precision(int val STATUS_PARAM); -#endif /*---------------------------------------------------------------------------- | Routine to raise any or all of the software IEC/IEEE floating-point @@ -250,22 +223,14 @@ float32 int32_to_float32( int32 STATUS_PARAM ); float64 int32_to_float64( int32 STATUS_PARAM ); float32 uint32_to_float32( unsigned int STATUS_PARAM ); float64 uint32_to_float64( unsigned int STATUS_PARAM ); -#ifdef FLOATX80 floatx80 int32_to_floatx80( int32 STATUS_PARAM ); -#endif -#ifdef FLOAT128 float128 int32_to_float128( int32 STATUS_PARAM ); -#endif float32 int64_to_float32( int64 STATUS_PARAM ); float32 uint64_to_float32( uint64 STATUS_PARAM ); float64 int64_to_float64( int64 STATUS_PARAM ); float64 uint64_to_float64( uint64 STATUS_PARAM ); -#ifdef FLOATX80 floatx80 int64_to_floatx80( int64 STATUS_PARAM ); -#endif -#ifdef FLOAT128 float128 int64_to_float128( int64 STATUS_PARAM ); -#endif /*---------------------------------------------------------------------------- | Software half-precision conversion routines. @@ -303,12 +268,8 @@ uint32 float32_to_uint32_round_to_zero( float32 STATUS_PARAM ); int64 float32_to_int64( float32 STATUS_PARAM ); int64 float32_to_int64_round_to_zero( float32 STATUS_PARAM ); float64 float32_to_float64( float32 STATUS_PARAM ); -#ifdef FLOATX80 floatx80 float32_to_floatx80( float32 STATUS_PARAM ); -#endif -#ifdef FLOAT128 float128 float32_to_float128( float32 STATUS_PARAM ); -#endif /*---------------------------------------------------------------------------- | Software IEC/IEEE single-precision operations. @@ -420,12 +381,8 @@ int64 float64_to_int64_round_to_zero( float64 STATUS_PARAM ); uint64 float64_to_uint64 (float64 a STATUS_PARAM); uint64 float64_to_uint64_round_to_zero (float64 a STATUS_PARAM); float32 float64_to_float32( float64 STATUS_PARAM ); -#ifdef FLOATX80 floatx80 float64_to_floatx80( float64 STATUS_PARAM ); -#endif -#ifdef FLOAT128 float128 float64_to_float128( float64 STATUS_PARAM ); -#endif /*---------------------------------------------------------------------------- | Software IEC/IEEE double-precision operations. @@ -492,6 +449,11 @@ INLINE int float64_is_any_nan(float64 a) return ((float64_val(a) & ~(1ULL << 63)) > 0x7ff0000000000000ULL); } +INLINE int float64_is_zero_or_denormal(float64 a) +{ + return (float64_val(a) & 0x7ff0000000000000LL) == 0; +} + INLINE float64 float64_set_sign(float64 a, int sign) { return make_float64((float64_val(a) & 0x7fffffffffffffffULL) @@ -518,8 +480,6 @@ INLINE float64 float64_set_sign(float64 a, int sign) #define float64_default_nan make_float64(LIT64( 0xFFF8000000000000 )) #endif -#ifdef FLOATX80 - /*---------------------------------------------------------------------------- | Software IEC/IEEE extended double-precision conversion routines. *----------------------------------------------------------------------------*/ @@ -529,9 +489,7 @@ int64 floatx80_to_int64( floatx80 STATUS_PARAM ); int64 floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM ); float32 floatx80_to_float32( floatx80 STATUS_PARAM ); float64 floatx80_to_float64( floatx80 STATUS_PARAM ); -#ifdef FLOAT128 float128 floatx80_to_float128( floatx80 STATUS_PARAM ); -#endif /*---------------------------------------------------------------------------- | Software IEC/IEEE extended double-precision operations. @@ -585,6 +543,11 @@ INLINE int floatx80_is_zero(floatx80 a) return (a.high & 0x7fff) == 0 && a.low == 0; } +INLINE int floatx80_is_zero_or_denormal(floatx80 a) +{ + return (a.high & 0x7fff) == 0; +} + INLINE int floatx80_is_any_nan(floatx80 a) { return ((a.high & 0x7fff) == 0x7fff) && (a.low<<1); @@ -610,10 +573,6 @@ INLINE int floatx80_is_any_nan(floatx80 a) #define floatx80_default_nan_low LIT64( 0xC000000000000000 ) #endif -#endif - -#ifdef FLOAT128 - /*---------------------------------------------------------------------------- | Software IEC/IEEE quadruple-precision conversion routines. *----------------------------------------------------------------------------*/ @@ -623,9 +582,7 @@ int64 float128_to_int64( float128 STATUS_PARAM ); int64 float128_to_int64_round_to_zero( float128 STATUS_PARAM ); float32 float128_to_float32( float128 STATUS_PARAM ); float64 float128_to_float64( float128 STATUS_PARAM ); -#ifdef FLOATX80 floatx80 float128_to_floatx80( float128 STATUS_PARAM ); -#endif /*---------------------------------------------------------------------------- | Software IEC/IEEE quadruple-precision operations. @@ -679,6 +636,11 @@ INLINE int float128_is_zero(float128 a) return (a.high & 0x7fffffffffffffffLL) == 0 && a.low == 0; } +INLINE int float128_is_zero_or_denormal(float128 a) +{ + return (a.high & 0x7fff000000000000LL) == 0; +} + INLINE int float128_is_any_nan(float128 a) { return ((a.high >> 48) & 0x7fff) == 0x7fff && @@ -697,12 +659,4 @@ INLINE int float128_is_any_nan(float128 a) #define float128_default_nan_low LIT64( 0x0000000000000000 ) #endif -#endif - -#else /* CONFIG_SOFTFLOAT */ - -#include "softfloat-native.h" - -#endif /* !CONFIG_SOFTFLOAT */ - #endif /* !SOFTFLOAT_H */ |