[qemu.git] / fpu / softfloat-native.h

/* 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)
{
    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 && 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);
}
INLINE char float32_unordered( float32 a, float32 b STATUS_PARAM)
{
    return isunordered(a, b);

}
char float32_compare( float32, float32 STATUS_PARAM );
char float32_compare_quiet( float32, float32 STATUS_PARAM );
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 && 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);

}
INLINE char float64_unordered( float64 a, float64 b STATUS_PARAM)
{
    return isunordered(a, b);

}
char float64_compare( float64, float64 STATUS_PARAM );
char float64_compare_quiet( float64, float64 STATUS_PARAM );
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 && 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);

}
INLINE char floatx80_unordered( floatx80 a, floatx80 b STATUS_PARAM)
{
    return isunordered(a, b);

}
char floatx80_compare( floatx80, floatx80 STATUS_PARAM );
char floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM );
char floatx80_is_signaling_nan( floatx80 );

INLINE floatx80 floatx80_abs(floatx80 a)
{
    return fabsl(a);
}

INLINE floatx80 floatx80_chs(floatx80 a)
{
    return -a;
}
#endif
Commit	Line	Data
158142c2 FB	1	/* Native implementation of soft float functions */
	2	#include <math.h>
	3	#if defined(_BSD) && !defined(__APPLE__)
	4	#include <ieeefp.h>
	5	#else
	6	#include <fenv.h>
	7	#endif
	8
	9	typedef float float32;
	10	typedef double float64;
	11	#ifdef FLOATX80
	12	typedef long double floatx80;
	13	#endif
	14
	15	typedef union {
	16	float32 f;
	17	uint32_t i;
	18	} float32u;
	19	typedef union {
	20	float64 f;
	21	uint64_t i;
	22	} float64u;
	23	#ifdef FLOATX80
	24	typedef union {
	25	floatx80 f;
	26	struct {
	27	uint64_t low;
	28	uint16_t high;
	29	} i;
	30	} floatx80u;
	31	#endif
	32
	33	/*----------------------------------------------------------------------------
	34	\| Software IEC/IEEE floating-point rounding mode.
	35	----------------------------------------------------------------------------/
	36	#if defined(_BSD) && !defined(__APPLE__)
	37	enum {
	38	float_round_nearest_even = FP_RN,
	39	float_round_down = FE_RM,
	40	float_round_up = FE_RP,
	41	float_round_to_zero = FE_RZ
	42	};
	43	#elif defined(__arm__)
	44	enum {
	45	float_round_nearest_even = 0,
	46	float_round_down = 1,
	47	float_round_up = 2,
	48	float_round_to_zero = 3
	49	};
	50	#else
	51	enum {
	52	float_round_nearest_even = FE_TONEAREST,
	53	float_round_down = FE_DOWNWARD,
	54	float_round_up = FE_UPWARD,
	55	float_round_to_zero = FE_TOWARDZERO
	56	};
	57	#endif
	58
	59	typedef struct float_status {
	60	signed char float_rounding_mode;
	61	#ifdef FLOATX80
	62	signed char floatx80_rounding_precision;
	63	#endif
	64	} float_status;
65
66	void set_float_rounding_mode(int val STATUS_PARAM);
67	#ifdef FLOATX80
68	void set_floatx80_rounding_precision(int val STATUS_PARAM);
69	#endif
70
71	/*----------------------------------------------------------------------------
72	\| Software IEC/IEEE integer-to-floating-point conversion routines.
73	----------------------------------------------------------------------------/
74	float32 int32_to_float32( int STATUS_PARAM);
75	float64 int32_to_float64( int STATUS_PARAM);
76	#ifdef FLOATX80
77	floatx80 int32_to_floatx80( int STATUS_PARAM);
78	#endif
79	#ifdef FLOAT128
80	float128 int32_to_float128( int STATUS_PARAM);
81	#endif
82	float32 int64_to_float32( int64_t STATUS_PARAM);
83	float64 int64_to_float64( int64_t STATUS_PARAM);
84	#ifdef FLOATX80
85	floatx80 int64_to_floatx80( int64_t STATUS_PARAM);
86	#endif
87	#ifdef FLOAT128
88	float128 int64_to_float128( int64_t STATUS_PARAM);
89	#endif
90
91	/*----------------------------------------------------------------------------
92	\| Software IEC/IEEE single-precision conversion routines.
93	----------------------------------------------------------------------------/
94	int float32_to_int32( float32 STATUS_PARAM);
95	int float32_to_int32_round_to_zero( float32 STATUS_PARAM);
96	int64_t float32_to_int64( float32 STATUS_PARAM);
97	int64_t float32_to_int64_round_to_zero( float32 STATUS_PARAM);
98	float64 float32_to_float64( float32 STATUS_PARAM);
99	#ifdef FLOATX80
100	floatx80 float32_to_floatx80( float32 STATUS_PARAM);
101	#endif
102	#ifdef FLOAT128
103	float128 float32_to_float128( float32 STATUS_PARAM);
104	#endif
105
106	/*----------------------------------------------------------------------------
107	\| Software IEC/IEEE single-precision operations.
108	----------------------------------------------------------------------------/
109	float32 float32_round_to_int( float32 STATUS_PARAM);
110	INLINE float32 float32_add( float32 a, float32 b STATUS_PARAM)
111	{
112	return a + b;
113	}
114	INLINE float32 float32_sub( float32 a, float32 b STATUS_PARAM)
115	{
116	return a - b;
117	}
118	INLINE float32 float32_mul( float32 a, float32 b STATUS_PARAM)
119	{
120	return a * b;
121	}
122	INLINE float32 float32_div( float32 a, float32 b STATUS_PARAM)
123	{
124	return a / b;
125	}
126	float32 float32_rem( float32, float32 STATUS_PARAM);
127	float32 float32_sqrt( float32 STATUS_PARAM);
128	INLINE char float32_eq( float32 a, float32 b STATUS_PARAM)
129	{
158142c2 FB	130	return a == b;
	131	}
	132	INLINE char float32_le( float32 a, float32 b STATUS_PARAM)
	133	{
	134	return a <= b;
	135	}
	136	INLINE char float32_lt( float32 a, float32 b STATUS_PARAM)
	137	{
	138	return a < b;
	139	}
	140	INLINE char float32_eq_signaling( float32 a, float32 b STATUS_PARAM)
	141	{
b109f9f8	142	return a <= b && a >= b;
158142c2 FB	143	}
	144	INLINE char float32_le_quiet( float32 a, float32 b STATUS_PARAM)
	145	{
	146	return islessequal(a, b);
	147	}
	148	INLINE char float32_lt_quiet( float32 a, float32 b STATUS_PARAM)
	149	{
	150	return isless(a, b);
	151	}
b109f9f8 FB	152	INLINE char float32_unordered( float32 a, float32 b STATUS_PARAM)
	153	{
	154	return isunordered(a, b);
	155
	156	}
	157	char float32_compare( float32, float32 STATUS_PARAM );
	158	char float32_compare_quiet( float32, float32 STATUS_PARAM );
158142c2 FB	159	char float32_is_signaling_nan( float32 );
	160
	161	INLINE float32 float32_abs(float32 a)
	162	{
	163	return fabsf(a);
	164	}
	165
	166	INLINE float32 float32_chs(float32 a)
	167	{
	168	return -a;
	169	}
	170
	171	/*----------------------------------------------------------------------------
	172	\| Software IEC/IEEE double-precision conversion routines.
	173	----------------------------------------------------------------------------/
	174	int float64_to_int32( float64 STATUS_PARAM );
	175	int float64_to_int32_round_to_zero( float64 STATUS_PARAM );
	176	int64_t float64_to_int64( float64 STATUS_PARAM );
	177	int64_t float64_to_int64_round_to_zero( float64 STATUS_PARAM );
	178	float32 float64_to_float32( float64 STATUS_PARAM );
	179	#ifdef FLOATX80
	180	floatx80 float64_to_floatx80( float64 STATUS_PARAM );
	181	#endif
	182	#ifdef FLOAT128
	183	float128 float64_to_float128( float64 STATUS_PARAM );
	184	#endif
	185
	186	/*----------------------------------------------------------------------------
	187	\| Software IEC/IEEE double-precision operations.
	188	----------------------------------------------------------------------------/
	189	float64 float64_round_to_int( float64 STATUS_PARAM );
	190	INLINE float64 float64_add( float64 a, float64 b STATUS_PARAM)
	191	{
	192	return a + b;
	193	}
	194	INLINE float64 float64_sub( float64 a, float64 b STATUS_PARAM)
	195	{
	196	return a - b;
	197	}
	198	INLINE float64 float64_mul( float64 a, float64 b STATUS_PARAM)
	199	{
	200	return a * b;
	201	}
	202	INLINE float64 float64_div( float64 a, float64 b STATUS_PARAM)
	203	{
	204	return a / b;
	205	}
	206	float64 float64_rem( float64, float64 STATUS_PARAM );
	207	float64 float64_sqrt( float64 STATUS_PARAM );
	208	INLINE char float64_eq( float64 a, float64 b STATUS_PARAM)
	209	{
	210	return a == b;
	211	}
	212	INLINE char float64_le( float64 a, float64 b STATUS_PARAM)
	213	{
	214	return a <= b;
	215	}
	216	INLINE char float64_lt( float64 a, float64 b STATUS_PARAM)
	217	{
	218	return a < b;
	219	}
	220	INLINE char float64_eq_signaling( float64 a, float64 b STATUS_PARAM)
	221	{
b109f9f8	222	return a <= b && a >= b;
158142c2 FB	223	}
	224	INLINE char float64_le_quiet( float64 a, float64 b STATUS_PARAM)
	225	{
	226	return islessequal(a, b);
	227	}
	228	INLINE char float64_lt_quiet( float64 a, float64 b STATUS_PARAM)
	229	{
	230	return isless(a, b);
	231
	232	}
b109f9f8 FB	233	INLINE char float64_unordered( float64 a, float64 b STATUS_PARAM)
	234	{
	235	return isunordered(a, b);
	236
	237	}
	238	char float64_compare( float64, float64 STATUS_PARAM );
	239	char float64_compare_quiet( float64, float64 STATUS_PARAM );
158142c2 FB	240	char float64_is_signaling_nan( float64 );
	241
	242	INLINE float64 float64_abs(float64 a)
	243	{
	244	return fabs(a);
	245	}
	246
	247	INLINE float64 float64_chs(float64 a)
	248	{
	249	return -a;
	250	}
	251
	252	#ifdef FLOATX80
	253
	254	/*----------------------------------------------------------------------------
	255	\| Software IEC/IEEE extended double-precision conversion routines.
	256	----------------------------------------------------------------------------/
	257	int floatx80_to_int32( floatx80 STATUS_PARAM );
	258	int floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM );
	259	int64_t floatx80_to_int64( floatx80 STATUS_PARAM);
	260	int64_t floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM);
	261	float32 floatx80_to_float32( floatx80 STATUS_PARAM );
	262	float64 floatx80_to_float64( floatx80 STATUS_PARAM );
	263	#ifdef FLOAT128
	264	float128 floatx80_to_float128( floatx80 STATUS_PARAM );
	265	#endif
	266
	267	/*----------------------------------------------------------------------------
	268	\| Software IEC/IEEE extended double-precision operations.
	269	----------------------------------------------------------------------------/
	270	floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM );
	271	INLINE floatx80 floatx80_add( floatx80 a, floatx80 b STATUS_PARAM)
	272	{
	273	return a + b;
	274	}
	275	INLINE floatx80 floatx80_sub( floatx80 a, floatx80 b STATUS_PARAM)
	276	{
	277	return a - b;
	278	}
	279	INLINE floatx80 floatx80_mul( floatx80 a, floatx80 b STATUS_PARAM)
	280	{
	281	return a * b;
	282	}
	283	INLINE floatx80 floatx80_div( floatx80 a, floatx80 b STATUS_PARAM)
	284	{
	285	return a / b;
	286	}
	287	floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM );
	288	floatx80 floatx80_sqrt( floatx80 STATUS_PARAM );
	289	INLINE char floatx80_eq( floatx80 a, floatx80 b STATUS_PARAM)
	290	{
	291	return a == b;
	292	}
	293	INLINE char floatx80_le( floatx80 a, floatx80 b STATUS_PARAM)
	294	{
	295	return a <= b;
	296	}
	297	INLINE char floatx80_lt( floatx80 a, floatx80 b STATUS_PARAM)
	298	{
	299	return a < b;
	300	}
	301	INLINE char floatx80_eq_signaling( floatx80 a, floatx80 b STATUS_PARAM)
	302	{
b109f9f8	303	return a <= b && a >= b;
158142c2 FB	304	}
	305	INLINE char floatx80_le_quiet( floatx80 a, floatx80 b STATUS_PARAM)
	306	{
	307	return islessequal(a, b);
	308	}
	309	INLINE char floatx80_lt_quiet( floatx80 a, floatx80 b STATUS_PARAM)
	310	{
	311	return isless(a, b);
	312
	313	}
b109f9f8 FB	314	INLINE char floatx80_unordered( floatx80 a, floatx80 b STATUS_PARAM)
	315	{
	316	return isunordered(a, b);
	317
	318	}
	319	char floatx80_compare( floatx80, floatx80 STATUS_PARAM );
	320	char floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM );
158142c2 FB	321	char floatx80_is_signaling_nan( floatx80 );
	322
	323	INLINE floatx80 floatx80_abs(floatx80 a)
	324	{
	325	return fabsl(a);
	326	}
	327
	328	INLINE floatx80 floatx80_chs(floatx80 a)
	329	{
	330	return -a;
	331	}
	332	#endif