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-rw-r--r--fpu/softfloat.h79
1 files changed, 17 insertions, 62 deletions
diff --git a/fpu/softfloat.h b/fpu/softfloat.h
index 5eff0858f1..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.
@@ -193,16 +170,15 @@ enum {
float_flag_overflow = 8,
float_flag_underflow = 16,
float_flag_inexact = 32,
- float_flag_input_denormal = 64
+ float_flag_input_denormal = 64,
+ float_flag_output_denormal = 128
};
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? */
@@ -232,9 +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
@@ -249,22 +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.
@@ -302,12 +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.
@@ -419,12 +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.
@@ -491,6 +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)
@@ -517,8 +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.
*----------------------------------------------------------------------------*/
@@ -528,9 +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.
@@ -584,6 +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);
@@ -609,10 +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.
*----------------------------------------------------------------------------*/
@@ -622,9 +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.
@@ -678,6 +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 &&
@@ -696,12 +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 */
generated by cgit v1.2.3 (git 2.26.2) at 2025-01-13 00:31:44 +0000