[qemu.git] / fpu / softfloat.h

/*============================================================================

This C header file is part of the SoftFloat IEC/IEEE Floating-point Arithmetic
Package, Release 2b.

Written by John R. Hauser.  This work was made possible in part by the
International Computer Science Institute, located at Suite 600, 1947 Center
Street, Berkeley, California 94704.  Funding was partially provided by the
National Science Foundation under grant MIP-9311980.  The original version
of this code was written as part of a project to build a fixed-point vector
processor in collaboration with the University of California at Berkeley,
overseen by Profs. Nelson Morgan and John Wawrzynek.  More information
is available through the Web page `http://www.cs.berkeley.edu/~jhauser/
arithmetic/SoftFloat.html'.

THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort has
been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES
RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS
AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,
COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE
EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE
INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR
OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.

Derivative works are acceptable, even for commercial purposes, so long as
(1) the source code for the derivative work includes prominent notice that
the work is derivative, and (2) the source code includes prominent notice with
these four paragraphs for those parts of this code that are retained.

=============================================================================*/

#ifndef SOFTFLOAT_H
#define SOFTFLOAT_H

#if defined(HOST_SOLARIS) && defined(NEEDS_LIBSUNMATH)
#include <sunmath.h>
#endif

#include <inttypes.h>
#include "config.h"

/*----------------------------------------------------------------------------
| Each of the following `typedef's defines the most convenient type that holds
| integers of at least as many bits as specified.  For example, `uint8' should
| be the most convenient type that can hold unsigned integers of as many as
| 8 bits.  The `flag' type must be able to hold either a 0 or 1.  For most
| implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed
| to the same as `int'.
*----------------------------------------------------------------------------*/
typedef uint8_t flag;
typedef uint8_t uint8;
typedef int8_t int8;
typedef int uint16;
typedef int int16;
typedef unsigned int uint32;
typedef signed int int32;
typedef uint64_t uint64;
typedef int64_t int64;

/*----------------------------------------------------------------------------
| Each of the following `typedef's defines a type that holds integers
| of _exactly_ the number of bits specified.  For instance, for most
| implementation of C, `bits16' and `sbits16' should be `typedef'ed to
| `unsigned short int' and `signed short int' (or `short int'), respectively.
*----------------------------------------------------------------------------*/
typedef uint8_t bits8;
typedef int8_t sbits8;
typedef uint16_t bits16;
typedef int16_t sbits16;
typedef uint32_t bits32;
typedef int32_t sbits32;
typedef uint64_t bits64;
typedef int64_t sbits64;

#define LIT64( a ) a##LL
#define INLINE static inline

/*----------------------------------------------------------------------------
| 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(_BSD)
#define FLOATX80
#endif
#endif /* !CONFIG_SOFTFLOAT */

#define STATUS_PARAM , float_status *status
#define STATUS(field) status->field
#define STATUS_VAR , status

/*----------------------------------------------------------------------------
| Software IEC/IEEE floating-point ordering relations
*----------------------------------------------------------------------------*/
enum {
    float_relation_less      = -1,
    float_relation_equal     =  0,
    float_relation_greater   =  1,
    float_relation_unordered =  2
};

#ifdef CONFIG_SOFTFLOAT
/*----------------------------------------------------------------------------
| Software IEC/IEEE floating-point types.
*----------------------------------------------------------------------------*/
/* Use structures for soft-float types.  This prevents accidentally mixing
   them with native int/float types.  A sufficiently clever compiler and
   sane ABI should be able to see though these structs.  However
   x86/gcc 3.x seems to struggle a bit, so leave them disabled by default.  */
//#define USE_SOFTFLOAT_STRUCT_TYPES
#ifdef USE_SOFTFLOAT_STRUCT_TYPES
typedef struct {
    uint32_t v;
} float32;
/* The cast ensures an error if the wrong type is passed.  */
#define float32_val(x) (((float32)(x)).v)
#define make_float32(x) __extension__ ({ float32 f32_val = {x}; f32_val; })
typedef struct {
    uint64_t v;
} float64;
#define float64_val(x) (((float64)(x)).v)
#define make_float64(x) __extension__ ({ float64 f64_val = {x}; f64_val; })
#else
typedef uint32_t float32;
typedef uint64_t float64;
#define float32_val(x) (x)
#define float64_val(x) (x)
#define make_float32(x) (x)
#define make_float64(x) (x)
#endif
#ifdef FLOATX80
typedef struct {
    uint64_t low;
    uint16_t high;
} floatx80;
#endif
#ifdef FLOAT128
typedef struct {
#ifdef WORDS_BIGENDIAN
    uint64_t high, low;
#else
    uint64_t low, high;
#endif
} float128;
#endif

/*----------------------------------------------------------------------------
| Software IEC/IEEE floating-point underflow tininess-detection mode.
*----------------------------------------------------------------------------*/
enum {
    float_tininess_after_rounding  = 0,
    float_tininess_before_rounding = 1
};

/*----------------------------------------------------------------------------
| Software IEC/IEEE floating-point rounding mode.
*----------------------------------------------------------------------------*/
enum {
    float_round_nearest_even = 0,
    float_round_down         = 1,
    float_round_up           = 2,
    float_round_to_zero      = 3
};

/*----------------------------------------------------------------------------
| Software IEC/IEEE floating-point exception flags.
*----------------------------------------------------------------------------*/
enum {
    float_flag_invalid   =  1,
    float_flag_divbyzero =  4,
    float_flag_overflow  =  8,
    float_flag_underflow = 16,
    float_flag_inexact   = 32
};

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
} float_status;

void set_float_rounding_mode(int val STATUS_PARAM);
void set_float_exception_flags(int val STATUS_PARAM);
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
| exception flags.
*----------------------------------------------------------------------------*/
void float_raise( int8 flags STATUS_PARAM);

/*----------------------------------------------------------------------------
| Software IEC/IEEE integer-to-floating-point conversion routines.
*----------------------------------------------------------------------------*/
float32 int32_to_float32( int STATUS_PARAM );
float64 int32_to_float64( int STATUS_PARAM );
float32 uint32_to_float32( unsigned 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 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 STATUS_PARAM );
unsigned int float32_to_uint32_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 );
float32 float32_add( float32, float32 STATUS_PARAM );
float32 float32_sub( float32, float32 STATUS_PARAM );
float32 float32_mul( float32, float32 STATUS_PARAM );
float32 float32_div( float32, float32 STATUS_PARAM );
float32 float32_rem( float32, float32 STATUS_PARAM );
float32 float32_sqrt( float32 STATUS_PARAM );
int float32_eq( float32, float32 STATUS_PARAM );
int float32_le( float32, float32 STATUS_PARAM );
int float32_lt( float32, float32 STATUS_PARAM );
int float32_eq_signaling( float32, float32 STATUS_PARAM );
int float32_le_quiet( float32, float32 STATUS_PARAM );
int float32_lt_quiet( float32, float32 STATUS_PARAM );
int float32_compare( float32, float32 STATUS_PARAM );
int float32_compare_quiet( float32, float32 STATUS_PARAM );
int float32_is_nan( float32 );
int float32_is_signaling_nan( float32 );
float32 float32_scalbn( float32, int STATUS_PARAM );

INLINE float32 float32_abs(float32 a)
{
    return make_float32(float32_val(a) & 0x7fffffff);
}

INLINE float32 float32_chs(float32 a)
{
    return make_float32(float32_val(a) ^ 0x80000000);
}

#define float32_zero make_float32(0)

/*----------------------------------------------------------------------------
| 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 a STATUS_PARAM);
uint64_t 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.
*----------------------------------------------------------------------------*/
float64 float64_round_to_int( float64 STATUS_PARAM );
float64 float64_trunc_to_int( float64 STATUS_PARAM );
float64 float64_add( float64, float64 STATUS_PARAM );
float64 float64_sub( float64, float64 STATUS_PARAM );
float64 float64_mul( float64, float64 STATUS_PARAM );
float64 float64_div( float64, float64 STATUS_PARAM );
float64 float64_rem( float64, float64 STATUS_PARAM );
float64 float64_sqrt( float64 STATUS_PARAM );
int float64_eq( float64, float64 STATUS_PARAM );
int float64_le( float64, float64 STATUS_PARAM );
int float64_lt( float64, float64 STATUS_PARAM );
int float64_eq_signaling( float64, float64 STATUS_PARAM );
int float64_le_quiet( float64, float64 STATUS_PARAM );
int float64_lt_quiet( float64, float64 STATUS_PARAM );
int float64_compare( float64, float64 STATUS_PARAM );
int float64_compare_quiet( float64, float64 STATUS_PARAM );
int float64_is_nan( float64 a );
int float64_is_signaling_nan( float64 );
float64 float64_scalbn( float64, int STATUS_PARAM );

INLINE float64 float64_abs(float64 a)
{
    return make_float64(float64_val(a) & 0x7fffffffffffffffLL);
}

INLINE float64 float64_chs(float64 a)
{
    return make_float64(float64_val(a) ^ 0x8000000000000000LL);
}

#define float64_zero make_float64(0)

#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 );
floatx80 floatx80_add( floatx80, floatx80 STATUS_PARAM );
floatx80 floatx80_sub( floatx80, floatx80 STATUS_PARAM );
floatx80 floatx80_mul( floatx80, floatx80 STATUS_PARAM );
floatx80 floatx80_div( floatx80, floatx80 STATUS_PARAM );
floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM );
floatx80 floatx80_sqrt( floatx80 STATUS_PARAM );
int floatx80_eq( floatx80, floatx80 STATUS_PARAM );
int floatx80_le( floatx80, floatx80 STATUS_PARAM );
int floatx80_lt( floatx80, floatx80 STATUS_PARAM );
int floatx80_eq_signaling( floatx80, floatx80 STATUS_PARAM );
int floatx80_le_quiet( floatx80, floatx80 STATUS_PARAM );
int floatx80_lt_quiet( floatx80, floatx80 STATUS_PARAM );
int floatx80_is_nan( floatx80 );
int floatx80_is_signaling_nan( floatx80 );
floatx80 floatx80_scalbn( floatx80, int STATUS_PARAM );

INLINE floatx80 floatx80_abs(floatx80 a)
{
    a.high &= 0x7fff;
    return a;
}

INLINE floatx80 floatx80_chs(floatx80 a)
{
    a.high ^= 0x8000;
    return a;
}

#endif

#ifdef FLOAT128

/*----------------------------------------------------------------------------
| Software IEC/IEEE quadruple-precision conversion routines.
*----------------------------------------------------------------------------*/
int float128_to_int32( float128 STATUS_PARAM );
int float128_to_int32_round_to_zero( float128 STATUS_PARAM );
int64_t float128_to_int64( float128 STATUS_PARAM );
int64_t 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.
*----------------------------------------------------------------------------*/
float128 float128_round_to_int( float128 STATUS_PARAM );
float128 float128_add( float128, float128 STATUS_PARAM );
float128 float128_sub( float128, float128 STATUS_PARAM );
float128 float128_mul( float128, float128 STATUS_PARAM );
float128 float128_div( float128, float128 STATUS_PARAM );
float128 float128_rem( float128, float128 STATUS_PARAM );
float128 float128_sqrt( float128 STATUS_PARAM );
int float128_eq( float128, float128 STATUS_PARAM );
int float128_le( float128, float128 STATUS_PARAM );
int float128_lt( float128, float128 STATUS_PARAM );
int float128_eq_signaling( float128, float128 STATUS_PARAM );
int float128_le_quiet( float128, float128 STATUS_PARAM );
int float128_lt_quiet( float128, float128 STATUS_PARAM );
int float128_compare( float128, float128 STATUS_PARAM );
int float128_compare_quiet( float128, float128 STATUS_PARAM );
int float128_is_nan( float128 );
int float128_is_signaling_nan( float128 );
float128 float128_scalbn( float128, int STATUS_PARAM );

INLINE float128 float128_abs(float128 a)
{
    a.high &= 0x7fffffffffffffffLL;
    return a;
}

INLINE float128 float128_chs(float128 a)
{
    a.high ^= 0x8000000000000000LL;
    return a;
}

#endif

#else /* CONFIG_SOFTFLOAT */

#include "softfloat-native.h"

#endif /* !CONFIG_SOFTFLOAT */

#endif /* !SOFTFLOAT_H */
Commit	Line	Data
158142c2 FB	1	/*============================================================================
	2
	3	This C header file is part of the SoftFloat IEC/IEEE Floating-point Arithmetic
	4	Package, Release 2b.
	5
	6	Written by John R. Hauser. This work was made possible in part by the
	7	International Computer Science Institute, located at Suite 600, 1947 Center
	8	Street, Berkeley, California 94704. Funding was partially provided by the
	9	National Science Foundation under grant MIP-9311980. The original version
	10	of this code was written as part of a project to build a fixed-point vector
	11	processor in collaboration with the University of California at Berkeley,
	12	overseen by Profs. Nelson Morgan and John Wawrzynek. More information
	13	is available through the Web page `http://www.cs.berkeley.edu/~jhauser/
	14	arithmetic/SoftFloat.html'.
	15
	16	THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE. Although reasonable effort has
	17	been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES
	18	RESULT IN INCORRECT BEHAVIOR. USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS
	19	AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,
	20	COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE
	21	EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE
	22	INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR
	23	OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.
	24
	25	Derivative works are acceptable, even for commercial purposes, so long as
	26	(1) the source code for the derivative work includes prominent notice that
	27	the work is derivative, and (2) the source code includes prominent notice with
	28	these four paragraphs for those parts of this code that are retained.
	29
	30	=============================================================================*/
	31
	32	#ifndef SOFTFLOAT_H
	33	#define SOFTFLOAT_H
	34
0475a5ca TS	35	#if defined(HOST_SOLARIS) && defined(NEEDS_LIBSUNMATH)
	36	#include <sunmath.h>
	37	#endif
	38
158142c2 FB	39	#include <inttypes.h>
	40	#include "config.h"
	41
	42	/*----------------------------------------------------------------------------
	43	\| Each of the following `typedef's defines the most convenient type that holds
	44	\| integers of at least as many bits as specified. For example, `uint8' should
	45	\| be the most convenient type that can hold unsigned integers of as many as
	46	\| 8 bits. The `flag' type must be able to hold either a 0 or 1. For most
	47	\| implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed
	48	\| to the same as `int'.
	49	----------------------------------------------------------------------------/
750afe93	50	typedef uint8_t flag;
158142c2 FB	51	typedef uint8_t uint8;
	52	typedef int8_t int8;
	53	typedef int uint16;
	54	typedef int int16;
	55	typedef unsigned int uint32;
	56	typedef signed int int32;
	57	typedef uint64_t uint64;
	58	typedef int64_t int64;
	59
	60	/*----------------------------------------------------------------------------
	61	\| Each of the following `typedef's defines a type that holds integers
	62	\| of _exactly_ the number of bits specified. For instance, for most
	63	\| implementation of C, `bits16' and `sbits16' should be `typedef'ed to
	64	\| `unsigned short int' and `signed short int' (or `short int'), respectively.
	65	----------------------------------------------------------------------------/
	66	typedef uint8_t bits8;
	67	typedef int8_t sbits8;
	68	typedef uint16_t bits16;
	69	typedef int16_t sbits16;
	70	typedef uint32_t bits32;
	71	typedef int32_t sbits32;
	72	typedef uint64_t bits64;
	73	typedef int64_t sbits64;
	74
	75	#define LIT64( a ) a##LL
	76	#define INLINE static inline
	77
	78	/*----------------------------------------------------------------------------
	79	\| The macro `FLOATX80' must be defined to enable the extended double-precision
	80	\| floating-point format `floatx80'. If this macro is not defined, the
	81	\| `floatx80' type will not be defined, and none of the functions that either
	82	\| input or output the `floatx80' type will be defined. The same applies to
	83	\| the `FLOAT128' macro and the quadruple-precision format `float128'.
	84	----------------------------------------------------------------------------/
	85	#ifdef CONFIG_SOFTFLOAT
	86	/* bit exact soft float support */
	87	#define FLOATX80
	88	#define FLOAT128
	89	#else
	90	/* native float support */
	91	#if (defined(__i386__) \|\| defined(__x86_64__)) && !defined(_BSD)
	92	#define FLOATX80
	93	#endif
	94	#endif /* !CONFIG_SOFTFLOAT */
	95
	96	#define STATUS_PARAM , float_status *status
	97	#define STATUS(field) status->field
	98	#define STATUS_VAR , status
	99
1d6bda35 FB	100	/*----------------------------------------------------------------------------
	101	\| Software IEC/IEEE floating-point ordering relations
	102	----------------------------------------------------------------------------/
	103	enum {
	104	float_relation_less = -1,
	105	float_relation_equal = 0,
	106	float_relation_greater = 1,
	107	float_relation_unordered = 2
	108	};
	109
158142c2 FB	110	#ifdef CONFIG_SOFTFLOAT
	111	/*----------------------------------------------------------------------------
	112	\| Software IEC/IEEE floating-point types.
	113	----------------------------------------------------------------------------/
f090c9d4 PB	114	/* Use structures for soft-float types. This prevents accidentally mixing
	115	them with native int/float types. A sufficiently clever compiler and
	116	sane ABI should be able to see though these structs. However
	117	x86/gcc 3.x seems to struggle a bit, so leave them disabled by default. */
	118	//#define USE_SOFTFLOAT_STRUCT_TYPES
	119	#ifdef USE_SOFTFLOAT_STRUCT_TYPES
	120	typedef struct {
	121	uint32_t v;
	122	} float32;
	123	/* The cast ensures an error if the wrong type is passed. */
	124	#define float32_val(x) (((float32)(x)).v)
	125	#define make_float32(x) __extension__ ({ float32 f32_val = {x}; f32_val; })
	126	typedef struct {
	127	uint64_t v;
	128	} float64;
	129	#define float64_val(x) (((float64)(x)).v)
	130	#define make_float64(x) __extension__ ({ float64 f64_val = {x}; f64_val; })
	131	#else
158142c2 FB	132	typedef uint32_t float32;
158142c2 FB	133	typedef uint64_t float64;
f090c9d4 PB	134	#define float32_val(x) (x)
	135	#define float64_val(x) (x)
	136	#define make_float32(x) (x)
	137	#define make_float64(x) (x)
	138	#endif
158142c2 FB	139	#ifdef FLOATX80
	140	typedef struct {
	141	uint64_t low;
	142	uint16_t high;
	143	} floatx80;
	144	#endif
	145	#ifdef FLOAT128
	146	typedef struct {
	147	#ifdef WORDS_BIGENDIAN
	148	uint64_t high, low;
	149	#else
	150	uint64_t low, high;
	151	#endif
	152	} float128;
	153	#endif
	154
	155	/*----------------------------------------------------------------------------
	156	\| Software IEC/IEEE floating-point underflow tininess-detection mode.
	157	----------------------------------------------------------------------------/
	158	enum {
	159	float_tininess_after_rounding = 0,
	160	float_tininess_before_rounding = 1
	161	};
	162
	163	/*----------------------------------------------------------------------------
	164	\| Software IEC/IEEE floating-point rounding mode.
	165	----------------------------------------------------------------------------/
	166	enum {
	167	float_round_nearest_even = 0,
	168	float_round_down = 1,
	169	float_round_up = 2,
	170	float_round_to_zero = 3
	171	};
	172
	173	/*----------------------------------------------------------------------------
	174	\| Software IEC/IEEE floating-point exception flags.
	175	----------------------------------------------------------------------------/
	176	enum {
	177	float_flag_invalid = 1,
	178	float_flag_divbyzero = 4,
	179	float_flag_overflow = 8,
	180	float_flag_underflow = 16,
	181	float_flag_inexact = 32
	182	};
	183
	184	typedef struct float_status {
	185	signed char float_detect_tininess;
	186	signed char float_rounding_mode;
	187	signed char float_exception_flags;
	188	#ifdef FLOATX80
	189	signed char floatx80_rounding_precision;
	190	#endif
	191	} float_status;
	192
	193	void set_float_rounding_mode(int val STATUS_PARAM);
1d6bda35 FB	194	void set_float_exception_flags(int val STATUS_PARAM);
	195	INLINE int get_float_exception_flags(float_status *status)
	196	{
	197	return STATUS(float_exception_flags);
	198	}
158142c2 FB	199	#ifdef FLOATX80
	200	void set_floatx80_rounding_precision(int val STATUS_PARAM);
	201	#endif
	202
	203	/*----------------------------------------------------------------------------
	204	\| Routine to raise any or all of the software IEC/IEEE floating-point
	205	\| exception flags.
	206	----------------------------------------------------------------------------/
ec530c81	207	void float_raise( int8 flags STATUS_PARAM);
158142c2 FB	208
	209	/*----------------------------------------------------------------------------
	210	\| Software IEC/IEEE integer-to-floating-point conversion routines.
	211	----------------------------------------------------------------------------/
	212	float32 int32_to_float32( int STATUS_PARAM );
	213	float64 int32_to_float64( int STATUS_PARAM );
1d6bda35 FB	214	float32 uint32_to_float32( unsigned int STATUS_PARAM );
1d6bda35 FB	215	float64 uint32_to_float64( unsigned int STATUS_PARAM );
158142c2 FB	216	#ifdef FLOATX80
	217	floatx80 int32_to_floatx80( int STATUS_PARAM );
	218	#endif
	219	#ifdef FLOAT128
	220	float128 int32_to_float128( int STATUS_PARAM );
	221	#endif
	222	float32 int64_to_float32( int64_t STATUS_PARAM );
75d62a58	223	float32 uint64_to_float32( uint64_t STATUS_PARAM );
158142c2	224	float64 int64_to_float64( int64_t STATUS_PARAM );
75d62a58	225	float64 uint64_to_float64( uint64_t STATUS_PARAM );
158142c2 FB	226	#ifdef FLOATX80
	227	floatx80 int64_to_floatx80( int64_t STATUS_PARAM );
	228	#endif
	229	#ifdef FLOAT128
	230	float128 int64_to_float128( int64_t STATUS_PARAM );
	231	#endif
	232
	233	/*----------------------------------------------------------------------------
	234	\| Software IEC/IEEE single-precision conversion routines.
	235	----------------------------------------------------------------------------/
	236	int float32_to_int32( float32 STATUS_PARAM );
	237	int float32_to_int32_round_to_zero( float32 STATUS_PARAM );
1d6bda35 FB	238	unsigned int float32_to_uint32( float32 STATUS_PARAM );
1d6bda35 FB	239	unsigned int float32_to_uint32_round_to_zero( float32 STATUS_PARAM );
158142c2 FB	240	int64_t float32_to_int64( float32 STATUS_PARAM );
	241	int64_t float32_to_int64_round_to_zero( float32 STATUS_PARAM );
	242	float64 float32_to_float64( float32 STATUS_PARAM );
	243	#ifdef FLOATX80
	244	floatx80 float32_to_floatx80( float32 STATUS_PARAM );
	245	#endif
	246	#ifdef FLOAT128
	247	float128 float32_to_float128( float32 STATUS_PARAM );
	248	#endif
	249
	250	/*----------------------------------------------------------------------------
	251	\| Software IEC/IEEE single-precision operations.
	252	----------------------------------------------------------------------------/
	253	float32 float32_round_to_int( float32 STATUS_PARAM );
	254	float32 float32_add( float32, float32 STATUS_PARAM );
	255	float32 float32_sub( float32, float32 STATUS_PARAM );
	256	float32 float32_mul( float32, float32 STATUS_PARAM );
	257	float32 float32_div( float32, float32 STATUS_PARAM );
	258	float32 float32_rem( float32, float32 STATUS_PARAM );
	259	float32 float32_sqrt( float32 STATUS_PARAM );
750afe93 FB	260	int float32_eq( float32, float32 STATUS_PARAM );
	261	int float32_le( float32, float32 STATUS_PARAM );
	262	int float32_lt( float32, float32 STATUS_PARAM );
	263	int float32_eq_signaling( float32, float32 STATUS_PARAM );
	264	int float32_le_quiet( float32, float32 STATUS_PARAM );
	265	int float32_lt_quiet( float32, float32 STATUS_PARAM );
	266	int float32_compare( float32, float32 STATUS_PARAM );
	267	int float32_compare_quiet( float32, float32 STATUS_PARAM );
924b2c07	268	int float32_is_nan( float32 );
750afe93	269	int float32_is_signaling_nan( float32 );
9ee6e8bb	270	float32 float32_scalbn( float32, int STATUS_PARAM );
158142c2	271
1d6bda35 FB	272	INLINE float32 float32_abs(float32 a)
1d6bda35 FB	273	{
f090c9d4	274	return make_float32(float32_val(a) & 0x7fffffff);
1d6bda35 FB	275	}
	276
	277	INLINE float32 float32_chs(float32 a)
	278	{
f090c9d4	279	return make_float32(float32_val(a) ^ 0x80000000);
1d6bda35 FB	280	}
1d6bda35 FB	281
f090c9d4 PB	282	#define float32_zero make_float32(0)
f090c9d4 PB	283
158142c2 FB	284	/*----------------------------------------------------------------------------
	285	\| Software IEC/IEEE double-precision conversion routines.
	286	----------------------------------------------------------------------------/
	287	int float64_to_int32( float64 STATUS_PARAM );
	288	int float64_to_int32_round_to_zero( float64 STATUS_PARAM );
1d6bda35 FB	289	unsigned int float64_to_uint32( float64 STATUS_PARAM );
1d6bda35 FB	290	unsigned int float64_to_uint32_round_to_zero( float64 STATUS_PARAM );
158142c2 FB	291	int64_t float64_to_int64( float64 STATUS_PARAM );
158142c2 FB	292	int64_t float64_to_int64_round_to_zero( float64 STATUS_PARAM );
75d62a58 JM	293	uint64_t float64_to_uint64 (float64 a STATUS_PARAM);
75d62a58 JM	294	uint64_t float64_to_uint64_round_to_zero (float64 a STATUS_PARAM);
158142c2 FB	295	float32 float64_to_float32( float64 STATUS_PARAM );
	296	#ifdef FLOATX80
	297	floatx80 float64_to_floatx80( float64 STATUS_PARAM );
	298	#endif
	299	#ifdef FLOAT128
	300	float128 float64_to_float128( float64 STATUS_PARAM );
	301	#endif
	302
	303	/*----------------------------------------------------------------------------
	304	\| Software IEC/IEEE double-precision operations.
	305	----------------------------------------------------------------------------/
	306	float64 float64_round_to_int( float64 STATUS_PARAM );
e6e5906b	307	float64 float64_trunc_to_int( float64 STATUS_PARAM );
158142c2 FB	308	float64 float64_add( float64, float64 STATUS_PARAM );
	309	float64 float64_sub( float64, float64 STATUS_PARAM );
	310	float64 float64_mul( float64, float64 STATUS_PARAM );
	311	float64 float64_div( float64, float64 STATUS_PARAM );
	312	float64 float64_rem( float64, float64 STATUS_PARAM );
	313	float64 float64_sqrt( float64 STATUS_PARAM );
750afe93 FB	314	int float64_eq( float64, float64 STATUS_PARAM );
	315	int float64_le( float64, float64 STATUS_PARAM );
	316	int float64_lt( float64, float64 STATUS_PARAM );
	317	int float64_eq_signaling( float64, float64 STATUS_PARAM );
	318	int float64_le_quiet( float64, float64 STATUS_PARAM );
	319	int float64_lt_quiet( float64, float64 STATUS_PARAM );
	320	int float64_compare( float64, float64 STATUS_PARAM );
	321	int float64_compare_quiet( float64, float64 STATUS_PARAM );
924b2c07	322	int float64_is_nan( float64 a );
750afe93	323	int float64_is_signaling_nan( float64 );
9ee6e8bb	324	float64 float64_scalbn( float64, int STATUS_PARAM );
158142c2	325
1d6bda35 FB	326	INLINE float64 float64_abs(float64 a)
1d6bda35 FB	327	{
f090c9d4	328	return make_float64(float64_val(a) & 0x7fffffffffffffffLL);
1d6bda35 FB	329	}
	330
	331	INLINE float64 float64_chs(float64 a)
	332	{
f090c9d4	333	return make_float64(float64_val(a) ^ 0x8000000000000000LL);
1d6bda35 FB	334	}
1d6bda35 FB	335
f090c9d4 PB	336	#define float64_zero make_float64(0)
f090c9d4 PB	337
158142c2 FB	338	#ifdef FLOATX80
	339
	340	/*----------------------------------------------------------------------------
	341	\| Software IEC/IEEE extended double-precision conversion routines.
	342	----------------------------------------------------------------------------/
	343	int floatx80_to_int32( floatx80 STATUS_PARAM );
	344	int floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM );
	345	int64_t floatx80_to_int64( floatx80 STATUS_PARAM );
	346	int64_t floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM );
	347	float32 floatx80_to_float32( floatx80 STATUS_PARAM );
	348	float64 floatx80_to_float64( floatx80 STATUS_PARAM );
	349	#ifdef FLOAT128
	350	float128 floatx80_to_float128( floatx80 STATUS_PARAM );
	351	#endif
	352
	353	/*----------------------------------------------------------------------------
	354	\| Software IEC/IEEE extended double-precision operations.
	355	----------------------------------------------------------------------------/
	356	floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM );
	357	floatx80 floatx80_add( floatx80, floatx80 STATUS_PARAM );
	358	floatx80 floatx80_sub( floatx80, floatx80 STATUS_PARAM );
	359	floatx80 floatx80_mul( floatx80, floatx80 STATUS_PARAM );
	360	floatx80 floatx80_div( floatx80, floatx80 STATUS_PARAM );
	361	floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM );
	362	floatx80 floatx80_sqrt( floatx80 STATUS_PARAM );
750afe93 FB	363	int floatx80_eq( floatx80, floatx80 STATUS_PARAM );
	364	int floatx80_le( floatx80, floatx80 STATUS_PARAM );
	365	int floatx80_lt( floatx80, floatx80 STATUS_PARAM );
	366	int floatx80_eq_signaling( floatx80, floatx80 STATUS_PARAM );
	367	int floatx80_le_quiet( floatx80, floatx80 STATUS_PARAM );
	368	int floatx80_lt_quiet( floatx80, floatx80 STATUS_PARAM );
924b2c07	369	int floatx80_is_nan( floatx80 );
750afe93	370	int floatx80_is_signaling_nan( floatx80 );
9ee6e8bb	371	floatx80 floatx80_scalbn( floatx80, int STATUS_PARAM );
158142c2	372
1d6bda35 FB	373	INLINE floatx80 floatx80_abs(floatx80 a)
	374	{
	375	a.high &= 0x7fff;
	376	return a;
	377	}
	378
	379	INLINE floatx80 floatx80_chs(floatx80 a)
	380	{
	381	a.high ^= 0x8000;
	382	return a;
	383	}
	384
158142c2 FB	385	#endif
	386
	387	#ifdef FLOAT128
	388
	389	/*----------------------------------------------------------------------------
	390	\| Software IEC/IEEE quadruple-precision conversion routines.
	391	----------------------------------------------------------------------------/
	392	int float128_to_int32( float128 STATUS_PARAM );
	393	int float128_to_int32_round_to_zero( float128 STATUS_PARAM );
	394	int64_t float128_to_int64( float128 STATUS_PARAM );
	395	int64_t float128_to_int64_round_to_zero( float128 STATUS_PARAM );
	396	float32 float128_to_float32( float128 STATUS_PARAM );
	397	float64 float128_to_float64( float128 STATUS_PARAM );
	398	#ifdef FLOATX80
	399	floatx80 float128_to_floatx80( float128 STATUS_PARAM );
	400	#endif
	401
	402	/*----------------------------------------------------------------------------
	403	\| Software IEC/IEEE quadruple-precision operations.
	404	----------------------------------------------------------------------------/
	405	float128 float128_round_to_int( float128 STATUS_PARAM );
	406	float128 float128_add( float128, float128 STATUS_PARAM );
	407	float128 float128_sub( float128, float128 STATUS_PARAM );
	408	float128 float128_mul( float128, float128 STATUS_PARAM );
	409	float128 float128_div( float128, float128 STATUS_PARAM );
	410	float128 float128_rem( float128, float128 STATUS_PARAM );
	411	float128 float128_sqrt( float128 STATUS_PARAM );
750afe93 FB	412	int float128_eq( float128, float128 STATUS_PARAM );
	413	int float128_le( float128, float128 STATUS_PARAM );
	414	int float128_lt( float128, float128 STATUS_PARAM );
	415	int float128_eq_signaling( float128, float128 STATUS_PARAM );
	416	int float128_le_quiet( float128, float128 STATUS_PARAM );
	417	int float128_lt_quiet( float128, float128 STATUS_PARAM );
1f587329 BS	418	int float128_compare( float128, float128 STATUS_PARAM );
1f587329 BS	419	int float128_compare_quiet( float128, float128 STATUS_PARAM );
924b2c07	420	int float128_is_nan( float128 );
750afe93	421	int float128_is_signaling_nan( float128 );
9ee6e8bb	422	float128 float128_scalbn( float128, int STATUS_PARAM );
158142c2	423
1d6bda35 FB	424	INLINE float128 float128_abs(float128 a)
	425	{
	426	a.high &= 0x7fffffffffffffffLL;
	427	return a;
	428	}
	429
	430	INLINE float128 float128_chs(float128 a)
	431	{
	432	a.high ^= 0x8000000000000000LL;
	433	return a;
	434	}
	435
158142c2 FB	436	#endif
	437
	438	#else /* CONFIG_SOFTFLOAT */
	439
	440	#include "softfloat-native.h"
	441
	442	#endif /* !CONFIG_SOFTFLOAT */
	443
	444	#endif /* !SOFTFLOAT_H */