softfloat-native.h
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/* Native implementation of soft float functions */
#include <math.h>
#if defined(_BSD) && !defined(__APPLE__)
#include <ieeefp.h>
#else
#include <fenv.h>
#endif
typedef float float32;
typedef double float64;
#ifdef FLOATX80
typedef long double floatx80;
#endif
typedef union {
float32 f;
uint32_t i;
} float32u;
typedef union {
float64 f;
uint64_t i;
} float64u;
#ifdef FLOATX80
typedef union {
floatx80 f;
struct {
uint64_t low;
uint16_t high;
} i;
} floatx80u;
#endif
/*----------------------------------------------------------------------------
| Software IEC/IEEE floating-point rounding mode.
*----------------------------------------------------------------------------*/
#if defined(_BSD) && !defined(__APPLE__)
enum {
float_round_nearest_even = FP_RN,
float_round_down = FE_RM,
float_round_up = FE_RP,
float_round_to_zero = FE_RZ
};
#elif defined(__arm__)
enum {
float_round_nearest_even = 0,
float_round_down = 1,
float_round_up = 2,
float_round_to_zero = 3
};
#else
enum {
float_round_nearest_even = FE_TONEAREST,
float_round_down = FE_DOWNWARD,
float_round_up = FE_UPWARD,
float_round_to_zero = FE_TOWARDZERO
};
#endif
typedef struct float_status {
signed char float_rounding_mode;
#ifdef FLOATX80
signed char floatx80_rounding_precision;
#endif
} float_status;
void set_float_rounding_mode(int val STATUS_PARAM);
#ifdef FLOATX80
void set_floatx80_rounding_precision(int val STATUS_PARAM);
#endif
/*----------------------------------------------------------------------------
| Software IEC/IEEE integer-to-floating-point conversion routines.
*----------------------------------------------------------------------------*/
float32 int32_to_float32( int STATUS_PARAM);
float64 int32_to_float64( int STATUS_PARAM);
#ifdef FLOATX80
floatx80 int32_to_floatx80( int STATUS_PARAM);
#endif
#ifdef FLOAT128
float128 int32_to_float128( int STATUS_PARAM);
#endif
float32 int64_to_float32( int64_t STATUS_PARAM);
float64 int64_to_float64( int64_t STATUS_PARAM);
#ifdef FLOATX80
floatx80 int64_to_floatx80( int64_t STATUS_PARAM);
#endif
#ifdef FLOAT128
float128 int64_to_float128( int64_t STATUS_PARAM);
#endif
/*----------------------------------------------------------------------------
| Software IEC/IEEE single-precision conversion routines.
*----------------------------------------------------------------------------*/
int float32_to_int32( float32 STATUS_PARAM);
int float32_to_int32_round_to_zero( float32 STATUS_PARAM);
int64_t float32_to_int64( float32 STATUS_PARAM);
int64_t 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.
*----------------------------------------------------------------------------*/
float32 float32_round_to_int( float32 STATUS_PARAM);
INLINE float32 float32_add( float32 a, float32 b STATUS_PARAM)
{
return a + b;
}
INLINE float32 float32_sub( float32 a, float32 b STATUS_PARAM)
{
return a - b;
}
INLINE float32 float32_mul( float32 a, float32 b STATUS_PARAM)
{
return a * b;
}
INLINE float32 float32_div( float32 a, float32 b STATUS_PARAM)
{
return a / b;
}
float32 float32_rem( float32, float32 STATUS_PARAM);
float32 float32_sqrt( float32 STATUS_PARAM);
INLINE char float32_eq( float32 a, float32 b STATUS_PARAM)
{
/* XXX: incorrect because it can raise an exception */
return a == b;
}
INLINE char float32_le( float32 a, float32 b STATUS_PARAM)
{
return a <= b;
}
INLINE char float32_lt( float32 a, float32 b STATUS_PARAM)
{
return a < b;
}
INLINE char float32_eq_signaling( float32 a, float32 b STATUS_PARAM)
{
return a == b;
}
INLINE char float32_le_quiet( float32 a, float32 b STATUS_PARAM)
{
return islessequal(a, b);
}
INLINE char float32_lt_quiet( float32 a, float32 b STATUS_PARAM)
{
return isless(a, b);
}
char float32_is_signaling_nan( float32 );
INLINE float32 float32_abs(float32 a)
{
return fabsf(a);
}
INLINE float32 float32_chs(float32 a)
{
return -a;
}
/*----------------------------------------------------------------------------
| Software IEC/IEEE double-precision conversion routines.
*----------------------------------------------------------------------------*/
int float64_to_int32( float64 STATUS_PARAM );
int float64_to_int32_round_to_zero( float64 STATUS_PARAM );
int64_t float64_to_int64( float64 STATUS_PARAM );
int64_t float64_to_int64_round_to_zero( float64 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.
*----------------------------------------------------------------------------*/
float64 float64_round_to_int( float64 STATUS_PARAM );
INLINE float64 float64_add( float64 a, float64 b STATUS_PARAM)
{
return a + b;
}
INLINE float64 float64_sub( float64 a, float64 b STATUS_PARAM)
{
return a - b;
}
INLINE float64 float64_mul( float64 a, float64 b STATUS_PARAM)
{
return a * b;
}
INLINE float64 float64_div( float64 a, float64 b STATUS_PARAM)
{
return a / b;
}
float64 float64_rem( float64, float64 STATUS_PARAM );
float64 float64_sqrt( float64 STATUS_PARAM );
INLINE char float64_eq( float64 a, float64 b STATUS_PARAM)
{
return a == b;
}
INLINE char float64_le( float64 a, float64 b STATUS_PARAM)
{
return a <= b;
}
INLINE char float64_lt( float64 a, float64 b STATUS_PARAM)
{
return a < b;
}
INLINE char float64_eq_signaling( float64 a, float64 b STATUS_PARAM)
{
return a == b;
}
INLINE char float64_le_quiet( float64 a, float64 b STATUS_PARAM)
{
return islessequal(a, b);
}
INLINE char float64_lt_quiet( float64 a, float64 b STATUS_PARAM)
{
return isless(a, b);
}
char float64_is_signaling_nan( float64 );
INLINE float64 float64_abs(float64 a)
{
return fabs(a);
}
INLINE float64 float64_chs(float64 a)
{
return -a;
}
#ifdef FLOATX80
/*----------------------------------------------------------------------------
| Software IEC/IEEE extended double-precision conversion routines.
*----------------------------------------------------------------------------*/
int floatx80_to_int32( floatx80 STATUS_PARAM );
int floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM );
int64_t floatx80_to_int64( floatx80 STATUS_PARAM);
int64_t 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.
*----------------------------------------------------------------------------*/
floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM );
INLINE floatx80 floatx80_add( floatx80 a, floatx80 b STATUS_PARAM)
{
return a + b;
}
INLINE floatx80 floatx80_sub( floatx80 a, floatx80 b STATUS_PARAM)
{
return a - b;
}
INLINE floatx80 floatx80_mul( floatx80 a, floatx80 b STATUS_PARAM)
{
return a * b;
}
INLINE floatx80 floatx80_div( floatx80 a, floatx80 b STATUS_PARAM)
{
return a / b;
}
floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM );
floatx80 floatx80_sqrt( floatx80 STATUS_PARAM );
INLINE char floatx80_eq( floatx80 a, floatx80 b STATUS_PARAM)
{
return a == b;
}
INLINE char floatx80_le( floatx80 a, floatx80 b STATUS_PARAM)
{
return a <= b;
}
INLINE char floatx80_lt( floatx80 a, floatx80 b STATUS_PARAM)
{
return a < b;
}
INLINE char floatx80_eq_signaling( floatx80 a, floatx80 b STATUS_PARAM)
{
return a == b;
}
INLINE char floatx80_le_quiet( floatx80 a, floatx80 b STATUS_PARAM)
{
return islessequal(a, b);
}
INLINE char floatx80_lt_quiet( floatx80 a, floatx80 b STATUS_PARAM)
{
return isless(a, b);
}
char floatx80_is_signaling_nan( floatx80 );
INLINE floatx80 floatx80_abs(floatx80 a)
{
return fabsl(a);
}
INLINE floatx80 floatx80_chs(floatx80 a)
{
return -a;
}
#endif