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Diffstat (limited to 'fpu/softfloat-native.h')
| -rw-r--r-- | fpu/softfloat-native.h | 425 |
1 files changed, 425 insertions, 0 deletions
diff --git a/fpu/softfloat-native.h b/fpu/softfloat-native.h new file mode 100644 index 0000000..379d49d --- /dev/null +++ b/fpu/softfloat-native.h @@ -0,0 +1,425 @@ +/* Native implementation of soft float functions */ +#include <math.h> + +#if (defined(_BSD) && !defined(__APPLE__)) || defined(HOST_SOLARIS) +#include <ieeefp.h> +#define fabsf(f) ((float)fabs(f)) +#else +#include <fenv.h> +#endif + +#ifdef __OpenBSD__ +/* Get OpenBSD version number */ +#include <sys/param.h> +#endif + +/* + * Define some C99-7.12.3 classification macros and + * some C99-.12.4 for Solaris systems OS less than 10, + * or Solaris 10 systems running GCC 3.x or less. + * Solaris 10 with GCC4 does not need these macros as they + * are defined in <iso/math_c99.h> with a compiler directive + */ +#if defined(HOST_SOLARIS) && (( HOST_SOLARIS <= 9 ) || ((HOST_SOLARIS >= 10) \ + && (__GNUC__ <= 4))) \ + || (defined(__OpenBSD__) && (OpenBSD < 200811)) +/* + * C99 7.12.3 classification macros + * and + * C99 7.12.14 comparison macros + * + * ... do not work on Solaris 10 using GNU CC 3.4.x. + * Try to workaround the missing / broken C99 math macros. + */ +#if defined(__OpenBSD__) +#define unordered(x, y) (isnan(x) || isnan(y)) +#endif + +#define isnormal(x) (fpclass(x) >= FP_NZERO) +#define isgreater(x, y) ((!unordered(x, y)) && ((x) > (y))) +#define isgreaterequal(x, y) ((!unordered(x, y)) && ((x) >= (y))) +#define isless(x, y) ((!unordered(x, y)) && ((x) < (y))) +#define islessequal(x, y) ((!unordered(x, y)) && ((x) <= (y))) +#define isunordered(x,y) unordered(x, y) +#endif + +#if defined(__sun__) && !defined(NEED_LIBSUNMATH) + +#ifndef isnan +# define isnan(x) \ + (sizeof (x) == sizeof (long double) ? isnan_ld (x) \ + : sizeof (x) == sizeof (double) ? isnan_d (x) \ + : isnan_f (x)) +static inline int isnan_f (float x) { return x != x; } +static inline int isnan_d (double x) { return x != x; } +static inline int isnan_ld (long double x) { return x != x; } +#endif + +#ifndef isinf +# define isinf(x) \ + (sizeof (x) == sizeof (long double) ? isinf_ld (x) \ + : sizeof (x) == sizeof (double) ? isinf_d (x) \ + : isinf_f (x)) +static inline int isinf_f (float x) { return isnan (x - x); } +static inline int isinf_d (double x) { return isnan (x - x); } +static inline int isinf_ld (long double x) { return isnan (x - x); } +#endif +#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__)) || defined(HOST_SOLARIS) +#if defined(__OpenBSD__) +#define FE_RM FP_RM +#define FE_RP FP_RP +#define FE_RZ FP_RZ +#endif +enum { + float_round_nearest_even = FP_RN, + float_round_down = FP_RM, + float_round_up = FP_RP, + float_round_to_zero = FP_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); +float32 uint32_to_float32( unsigned int STATUS_PARAM); +float64 int32_to_float64( int STATUS_PARAM); +float64 uint32_to_float64( unsigned 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); +float32 uint64_to_float32( uint64_t STATUS_PARAM); +float64 int64_to_float64( int64_t STATUS_PARAM); +float64 uint64_to_float64( uint64_t v 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); +unsigned int float32_to_uint32( float32 a STATUS_PARAM); +unsigned int float32_to_uint32_round_to_zero( float32 a 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 int float32_eq( float32 a, float32 b STATUS_PARAM) +{ + return a == b; +} +INLINE int float32_le( float32 a, float32 b STATUS_PARAM) +{ + return a <= b; +} +INLINE int float32_lt( float32 a, float32 b STATUS_PARAM) +{ + return a < b; +} +INLINE int float32_eq_signaling( float32 a, float32 b STATUS_PARAM) +{ + return a <= b && a >= b; +} +INLINE int float32_le_quiet( float32 a, float32 b STATUS_PARAM) +{ + return islessequal(a, b); +} +INLINE int float32_lt_quiet( float32 a, float32 b STATUS_PARAM) +{ + return isless(a, b); +} +INLINE int float32_unordered( float32 a, float32 b STATUS_PARAM) +{ + return isunordered(a, b); + +} +int float32_compare( float32, float32 STATUS_PARAM ); +int float32_compare_quiet( float32, float32 STATUS_PARAM ); +int float32_is_signaling_nan( float32 ); + +INLINE float32 float32_abs(float32 a) +{ + return fabsf(a); +} + +INLINE float32 float32_chs(float32 a) +{ + return -a; +} + +INLINE float32 float32_scalbn(float32 a, int n) +{ + return scalbnf(a, n); +} + +/*---------------------------------------------------------------------------- +| Software IEC/IEEE double-precision conversion routines. +*----------------------------------------------------------------------------*/ +int float64_to_int32( float64 STATUS_PARAM ); +int float64_to_int32_round_to_zero( float64 STATUS_PARAM ); +unsigned int float64_to_uint32( float64 STATUS_PARAM ); +unsigned int float64_to_uint32_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 ); +uint64_t float64_to_uint64( float64 STATUS_PARAM ); +uint64_t float64_to_uint64_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 ); +float64 float64_trunc_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 int float64_eq( float64 a, float64 b STATUS_PARAM) +{ + return a == b; +} +INLINE int float64_le( float64 a, float64 b STATUS_PARAM) +{ + return a <= b; +} +INLINE int float64_lt( float64 a, float64 b STATUS_PARAM) +{ + return a < b; +} +INLINE int float64_eq_signaling( float64 a, float64 b STATUS_PARAM) +{ + return a <= b && a >= b; +} +INLINE int float64_le_quiet( float64 a, float64 b STATUS_PARAM) +{ + return islessequal(a, b); +} +INLINE int float64_lt_quiet( float64 a, float64 b STATUS_PARAM) +{ + return isless(a, b); + +} +INLINE int float64_unordered( float64 a, float64 b STATUS_PARAM) +{ + return isunordered(a, b); + +} +int float64_compare( float64, float64 STATUS_PARAM ); +int float64_compare_quiet( float64, float64 STATUS_PARAM ); +int float64_is_signaling_nan( float64 ); +int float64_is_nan( float64 ); + +INLINE float64 float64_abs(float64 a) +{ + return fabs(a); +} + +INLINE float64 float64_chs(float64 a) +{ + return -a; +} + +INLINE float64 float64_scalbn(float64 a, int n) +{ + return scalbn(a, n); +} + +#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 int floatx80_eq( floatx80 a, floatx80 b STATUS_PARAM) +{ + return a == b; +} +INLINE int floatx80_le( floatx80 a, floatx80 b STATUS_PARAM) +{ + return a <= b; +} +INLINE int floatx80_lt( floatx80 a, floatx80 b STATUS_PARAM) +{ + return a < b; +} +INLINE int floatx80_eq_signaling( floatx80 a, floatx80 b STATUS_PARAM) +{ + return a <= b && a >= b; +} +INLINE int floatx80_le_quiet( floatx80 a, floatx80 b STATUS_PARAM) +{ + return islessequal(a, b); +} +INLINE int floatx80_lt_quiet( floatx80 a, floatx80 b STATUS_PARAM) +{ + return isless(a, b); + +} +INLINE int floatx80_unordered( floatx80 a, floatx80 b STATUS_PARAM) +{ + return isunordered(a, b); + +} +int floatx80_compare( floatx80, floatx80 STATUS_PARAM ); +int floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM ); +int floatx80_is_signaling_nan( floatx80 ); + +INLINE floatx80 floatx80_abs(floatx80 a) +{ + return fabsl(a); +} + +INLINE floatx80 floatx80_chs(floatx80 a) +{ + return -a; +} + +INLINE floatx80 floatx80_scalbn(floatx80 a, int n) +{ + return scalbnl(a, n); +} + +#endif |