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/* Native implementation of soft float functions */

#include <math.h>

#if (defined(CONFIG_BSD) && !defined(__APPLE__) && !defined(__GLIBC__)) \

    || defined(CONFIG_SOLARIS)

#include <ieeefp.h>

#define fabsf(f) ((float)fabs(f))

#else

#include <fenv.h>

#endif

#if defined(__OpenBSD__) || defined(__NetBSD__)

#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(CONFIG_SOLARIS) && \

           ((CONFIG_SOLARIS_VERSION <= 9 ) || \

           ((CONFIG_SOLARIS_VERSION == 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

#ifdef __NetBSD__

#ifndef isgreater

#define isgreater(x, y)                __builtin_isgreater(x, y)

#endif

#ifndef isgreaterequal

#define isgreaterequal(x, y)        __builtin_isgreaterequal(x, y)

#endif

#ifndef isless

#define isless(x, y)                __builtin_isless(x, y)

#endif

#ifndef islessequal

#define islessequal(x, y)        __builtin_islessequal(x, y)

#endif

#ifndef isunordered

#define isunordered(x, y)        __builtin_isunordered(x, y)

#endif

#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(CONFIG_NEEDS_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(CONFIG_BSD) && !defined(__APPLE__) && !defined(__GLIBC__)) \

    || defined(CONFIG_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

};

#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 {

    int float_rounding_mode;

#ifdef FLOATX80

    int 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 );

int float32_is_nan( float32 );

INLINE float32 float32_abs(float32 a)

{

    return fabsf(a);

}

INLINE float32 float32_chs(float32 a)

{

    return -a;

}

INLINE float32 float32_is_infinity(float32 a)

{

    return fpclassify(a) == FP_INFINITE;

}

INLINE float32 float32_is_neg(float32 a)

{

    float32u u;

    u.f = a;

    return u.i >> 31;

}

INLINE float32 float32_is_zero(float32 a)

{

    return fpclassify(a) == FP_ZERO;

}

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_is_infinity(float64 a)

{

    return fpclassify(a) == FP_INFINITE;

}

INLINE float64 float64_is_neg(float64 a)

{

    float64u u;

    u.f = a;

    return u.i >> 63;

}

INLINE float64 float64_is_zero(float64 a)

{

    return fpclassify(a) == FP_ZERO;

}

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 );

int floatx80_is_nan( floatx80 );

INLINE floatx80 floatx80_abs(floatx80 a)

{

    return fabsl(a);

}

INLINE floatx80 floatx80_chs(floatx80 a)

{

    return -a;

}

INLINE floatx80 floatx80_is_infinity(floatx80 a)

{

    return fpclassify(a) == FP_INFINITE;

}

INLINE floatx80 floatx80_is_neg(floatx80 a)

{

    floatx80u u;

    u.f = a;

    return u.i.high >> 15;

}

INLINE floatx80 floatx80_is_zero(floatx80 a)

{

    return fpclassify(a) == FP_ZERO;

}

INLINE floatx80 floatx80_scalbn(floatx80 a, int n)

{

    return scalbnl(a, n);

}

#endif