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

/* Native implementation of soft float functions. Only a single status
   context is supported */
#include "softfloat.h"
#include <math.h>

void set_float_rounding_mode(int val STATUS_PARAM)
{
    STATUS(float_rounding_mode) = val;
#if defined(_BSD) && !defined(__APPLE__) || (defined(HOST_SOLARIS) && HOST_SOLARIS < 10)
    fpsetround(val);
#elif defined(__arm__)
    /* nothing to do */
#else
    fesetround(val);
#endif
}

#ifdef FLOATX80
void set_floatx80_rounding_precision(int val STATUS_PARAM)
{
    STATUS(floatx80_rounding_precision) = val;
}
#endif

#if defined(_BSD) || (defined(HOST_SOLARIS) && HOST_SOLARIS < 10)
#define lrint(d)		((int32_t)rint(d))
#define llrint(d)		((int64_t)rint(d))
#define lrintf(f)		((int32_t)rint(f))
#define llrintf(f)		((int64_t)rint(f))
#define sqrtf(f)		((float)sqrt(f))
#define remainderf(fa, fb)	((float)remainder(fa, fb))
#define rintf(f)		((float)rint(f))
#if !defined(__sparc__) && defined(HOST_SOLARIS) && HOST_SOLARIS < 10
extern long double rintl(long double);
extern long double scalbnl(long double, int);

long long
llrintl(long double x) {
	return ((long long) rintl(x));
}

long
lrintl(long double x) {
	return ((long) rintl(x));
}

long double
ldexpl(long double x, int n) {
	return (scalbnl(x, n));
}
#endif
#endif

#if defined(_ARCH_PPC)

/* correct (but slow) PowerPC rint() (glibc version is incorrect) */
static double qemu_rint(double x)
{
    double y = 4503599627370496.0;
    if (fabs(x) >= y)
        return x;
    if (x < 0)
        y = -y;
    y = (x + y) - y;
    if (y == 0.0)
        y = copysign(y, x);
    return y;
}

#define rint qemu_rint
#endif

/*----------------------------------------------------------------------------
| Software IEC/IEEE integer-to-floating-point conversion routines.
*----------------------------------------------------------------------------*/
float32 int32_to_float32(int v STATUS_PARAM)
{
    return (float32)v;
}

float32 uint32_to_float32(unsigned int v STATUS_PARAM)
{
    return (float32)v;
}

float64 int32_to_float64(int v STATUS_PARAM)
{
    return (float64)v;
}

float64 uint32_to_float64(unsigned int v STATUS_PARAM)
{
    return (float64)v;
}

#ifdef FLOATX80
floatx80 int32_to_floatx80(int v STATUS_PARAM)
{
    return (floatx80)v;
}
#endif
float32 int64_to_float32( int64_t v STATUS_PARAM)
{
    return (float32)v;
}
float32 uint64_to_float32( uint64_t v STATUS_PARAM)
{
    return (float32)v;
}
float64 int64_to_float64( int64_t v STATUS_PARAM)
{
    return (float64)v;
}
float64 uint64_to_float64( uint64_t v STATUS_PARAM)
{
    return (float64)v;
}
#ifdef FLOATX80
floatx80 int64_to_floatx80( int64_t v STATUS_PARAM)
{
    return (floatx80)v;
}
#endif

/* XXX: this code implements the x86 behaviour, not the IEEE one.  */
#if HOST_LONG_BITS == 32
static inline int long_to_int32(long a)
{
    return a;
}
#else
static inline int long_to_int32(long a)
{
    if (a != (int32_t)a)
        a = 0x80000000;
    return a;
}
#endif

/*----------------------------------------------------------------------------
| Software IEC/IEEE single-precision conversion routines.
*----------------------------------------------------------------------------*/
int float32_to_int32( float32 a STATUS_PARAM)
{
    return long_to_int32(lrintf(a));
}
int float32_to_int32_round_to_zero( float32 a STATUS_PARAM)
{
    return (int)a;
}
int64_t float32_to_int64( float32 a STATUS_PARAM)
{
    return llrintf(a);
}

int64_t float32_to_int64_round_to_zero( float32 a STATUS_PARAM)
{
    return (int64_t)a;
}

float64 float32_to_float64( float32 a STATUS_PARAM)
{
    return a;
}
#ifdef FLOATX80
floatx80 float32_to_floatx80( float32 a STATUS_PARAM)
{
    return a;
}
#endif

unsigned int float32_to_uint32( float32 a STATUS_PARAM)
{
    int64_t v;
    unsigned int res;

    v = llrintf(a);
    if (v < 0) {
        res = 0;
    } else if (v > 0xffffffff) {
        res = 0xffffffff;
    } else {
        res = v;
    }
    return res;
}
unsigned int float32_to_uint32_round_to_zero( float32 a STATUS_PARAM)
{
    int64_t v;
    unsigned int res;

    v = (int64_t)a;
    if (v < 0) {
        res = 0;
    } else if (v > 0xffffffff) {
        res = 0xffffffff;
    } else {
        res = v;
    }
    return res;
}

/*----------------------------------------------------------------------------
| Software IEC/IEEE single-precision operations.
*----------------------------------------------------------------------------*/
float32 float32_round_to_int( float32 a STATUS_PARAM)
{
    return rintf(a);
}

float32 float32_rem( float32 a, float32 b STATUS_PARAM)
{
    return remainderf(a, b);
}

float32 float32_sqrt( float32 a STATUS_PARAM)
{
    return sqrtf(a);
}
int float32_compare( float32 a, float32 b STATUS_PARAM )
{
    if (a < b) {
        return float_relation_less;
    } else if (a == b) {
        return float_relation_equal;
    } else if (a > b) {
        return float_relation_greater;
    } else {
        return float_relation_unordered;
    }
}
int float32_compare_quiet( float32 a, float32 b STATUS_PARAM )
{
    if (isless(a, b)) {
        return float_relation_less;
    } else if (a == b) {
        return float_relation_equal;
    } else if (isgreater(a, b)) {
        return float_relation_greater;
    } else {
        return float_relation_unordered;
    }
}
int float32_is_signaling_nan( float32 a1)
{
    float32u u;
    uint32_t a;
    u.f = a1;
    a = u.i;
    return ( ( ( a>>22 ) & 0x1FF ) == 0x1FE ) && ( a & 0x003FFFFF );
}

int float32_is_nan( float32 a1 )
{
    float32u u;
    uint64_t a;
    u.f = a1;
    a = u.i;
    return ( 0xFF800000 < ( a<<1 ) );
}

/*----------------------------------------------------------------------------
| Software IEC/IEEE double-precision conversion routines.
*----------------------------------------------------------------------------*/
int float64_to_int32( float64 a STATUS_PARAM)
{
    return long_to_int32(lrint(a));
}
int float64_to_int32_round_to_zero( float64 a STATUS_PARAM)
{
    return (int)a;
}
int64_t float64_to_int64( float64 a STATUS_PARAM)
{
    return llrint(a);
}
int64_t float64_to_int64_round_to_zero( float64 a STATUS_PARAM)
{
    return (int64_t)a;
}
float32 float64_to_float32( float64 a STATUS_PARAM)
{
    return a;
}
#ifdef FLOATX80
floatx80 float64_to_floatx80( float64 a STATUS_PARAM)
{
    return a;
}
#endif
#ifdef FLOAT128
float128 float64_to_float128( float64 a STATUS_PARAM)
{
    return a;
}
#endif

unsigned int float64_to_uint32( float64 a STATUS_PARAM)
{
    int64_t v;
    unsigned int res;

    v = llrint(a);
    if (v < 0) {
        res = 0;
    } else if (v > 0xffffffff) {
        res = 0xffffffff;
    } else {
        res = v;
    }
    return res;
}
unsigned int float64_to_uint32_round_to_zero( float64 a STATUS_PARAM)
{
    int64_t v;
    unsigned int res;

    v = (int64_t)a;
    if (v < 0) {
        res = 0;
    } else if (v > 0xffffffff) {
        res = 0xffffffff;
    } else {
        res = v;
    }
    return res;
}
uint64_t float64_to_uint64 (float64 a STATUS_PARAM)
{
    int64_t v;

    v = llrint(a + (float64)INT64_MIN);

    return v - INT64_MIN;
}
uint64_t float64_to_uint64_round_to_zero (float64 a STATUS_PARAM)
{
    int64_t v;

    v = (int64_t)(a + (float64)INT64_MIN);

    return v - INT64_MIN;
}

/*----------------------------------------------------------------------------
| Software IEC/IEEE double-precision operations.
*----------------------------------------------------------------------------*/
#if defined(__sun__) && defined(HOST_SOLARIS) && HOST_SOLARIS < 10
static inline float64 trunc(float64 x)
{
    return x < 0 ? -floor(-x) : floor(x);
}
#endif
float64 float64_trunc_to_int( float64 a STATUS_PARAM )
{
    return trunc(a);
}

float64 float64_round_to_int( float64 a STATUS_PARAM )
{
#if defined(__arm__)
    switch(STATUS(float_rounding_mode)) {
    default:
    case float_round_nearest_even:
        asm("rndd %0, %1" : "=f" (a) : "f"(a));
        break;
    case float_round_down:
        asm("rnddm %0, %1" : "=f" (a) : "f"(a));
        break;
    case float_round_up:
        asm("rnddp %0, %1" : "=f" (a) : "f"(a));
        break;
    case float_round_to_zero:
        asm("rnddz %0, %1" : "=f" (a) : "f"(a));
        break;
    }
#else
    return rint(a);
#endif
}

float64 float64_rem( float64 a, float64 b STATUS_PARAM)
{
    return remainder(a, b);
}

float64 float64_sqrt( float64 a STATUS_PARAM)
{
    return sqrt(a);
}
int float64_compare( float64 a, float64 b STATUS_PARAM )
{
    if (a < b) {
        return float_relation_less;
    } else if (a == b) {
        return float_relation_equal;
    } else if (a > b) {
        return float_relation_greater;
    } else {
        return float_relation_unordered;
    }
}
int float64_compare_quiet( float64 a, float64 b STATUS_PARAM )
{
    if (isless(a, b)) {
        return float_relation_less;
    } else if (a == b) {
        return float_relation_equal;
    } else if (isgreater(a, b)) {
        return float_relation_greater;
    } else {
        return float_relation_unordered;
    }
}
int float64_is_signaling_nan( float64 a1)
{
    float64u u;
    uint64_t a;
    u.f = a1;
    a = u.i;
    return
           ( ( ( a>>51 ) & 0xFFF ) == 0xFFE )
        && ( a & LIT64( 0x0007FFFFFFFFFFFF ) );

}

int float64_is_nan( float64 a1 )
{
    float64u u;
    uint64_t a;
    u.f = a1;
    a = u.i;

    return ( LIT64( 0xFFF0000000000000 ) < (bits64) ( a<<1 ) );

}

#ifdef FLOATX80

/*----------------------------------------------------------------------------
| Software IEC/IEEE extended double-precision conversion routines.
*----------------------------------------------------------------------------*/
int floatx80_to_int32( floatx80 a STATUS_PARAM)
{
    return long_to_int32(lrintl(a));
}
int floatx80_to_int32_round_to_zero( floatx80 a STATUS_PARAM)
{
    return (int)a;
}
int64_t floatx80_to_int64( floatx80 a STATUS_PARAM)
{
    return llrintl(a);
}
int64_t floatx80_to_int64_round_to_zero( floatx80 a STATUS_PARAM)
{
    return (int64_t)a;
}
float32 floatx80_to_float32( floatx80 a STATUS_PARAM)
{
    return a;
}
float64 floatx80_to_float64( floatx80 a STATUS_PARAM)
{
    return a;
}

/*----------------------------------------------------------------------------
| Software IEC/IEEE extended double-precision operations.
*----------------------------------------------------------------------------*/
floatx80 floatx80_round_to_int( floatx80 a STATUS_PARAM)
{
    return rintl(a);
}
floatx80 floatx80_rem( floatx80 a, floatx80 b STATUS_PARAM)
{
    return remainderl(a, b);
}
floatx80 floatx80_sqrt( floatx80 a STATUS_PARAM)
{
    return sqrtl(a);
}
int floatx80_compare( floatx80 a, floatx80 b STATUS_PARAM )
{
    if (a < b) {
        return float_relation_less;
    } else if (a == b) {
        return float_relation_equal;
    } else if (a > b) {
        return float_relation_greater;
    } else {
        return float_relation_unordered;
    }
}
int floatx80_compare_quiet( floatx80 a, floatx80 b STATUS_PARAM )
{
    if (isless(a, b)) {
        return float_relation_less;
    } else if (a == b) {
        return float_relation_equal;
    } else if (isgreater(a, b)) {
        return float_relation_greater;
    } else {
        return float_relation_unordered;
    }
}
int floatx80_is_signaling_nan( floatx80 a1)
{
    floatx80u u;
    uint64_t aLow;
    u.f = a1;

    aLow = u.i.low & ~ LIT64( 0x4000000000000000 );
    return
           ( ( u.i.high & 0x7FFF ) == 0x7FFF )
        && (bits64) ( aLow<<1 )
        && ( u.i.low == aLow );
}

int floatx80_is_nan( floatx80 a1 )
{
    floatx80u u;
    u.f = a1;
    return ( ( u.i.high & 0x7FFF ) == 0x7FFF ) && (bits64) ( u.i.low<<1 );
}

#endif
Commit	Line	Data
158142c2 FB	1	/* Native implementation of soft float functions. Only a single status
	2	context is supported */
	3	#include "softfloat.h"
	4	#include <math.h>
	5
	6	void set_float_rounding_mode(int val STATUS_PARAM)
	7	{
	8	STATUS(float_rounding_mode) = val;
fdbb4691	9	#if defined(_BSD) && !defined(__APPLE__) \|\| (defined(HOST_SOLARIS) && HOST_SOLARIS < 10)
158142c2 FB	10	fpsetround(val);
	11	#elif defined(__arm__)
	12	/* nothing to do */
	13	#else
	14	fesetround(val);
	15	#endif
	16	}
	17
	18	#ifdef FLOATX80
	19	void set_floatx80_rounding_precision(int val STATUS_PARAM)
	20	{
	21	STATUS(floatx80_rounding_precision) = val;
	22	}
	23	#endif
	24
fdbb4691 FB	25	#if defined(_BSD) \|\| (defined(HOST_SOLARIS) && HOST_SOLARIS < 10)
	26	#define lrint(d) ((int32_t)rint(d))
	27	#define llrint(d) ((int64_t)rint(d))
	28	#define lrintf(f) ((int32_t)rint(f))
	29	#define llrintf(f) ((int64_t)rint(f))
	30	#define sqrtf(f) ((float)sqrt(f))
	31	#define remainderf(fa, fb) ((float)remainder(fa, fb))
	32	#define rintf(f) ((float)rint(f))
fc81ba53	33	#if !defined(__sparc__) && defined(HOST_SOLARIS) && HOST_SOLARIS < 10
0475a5ca TS	34	extern long double rintl(long double);
	35	extern long double scalbnl(long double, int);
	36
	37	long long
	38	llrintl(long double x) {
	39	return ((long long) rintl(x));
	40	}
	41
	42	long
	43	lrintl(long double x) {
	44	return ((long) rintl(x));
	45	}
	46
	47	long double
	48	ldexpl(long double x, int n) {
	49	return (scalbnl(x, n));
	50	}
	51	#endif
158142c2 FB	52	#endif
158142c2 FB	53
e58ffeb3	54	#if defined(_ARCH_PPC)
158142c2 FB	55
158142c2 FB	56	/* correct (but slow) PowerPC rint() (glibc version is incorrect) */
947f5fcb	57	static double qemu_rint(double x)
158142c2 FB	58	{
	59	double y = 4503599627370496.0;
	60	if (fabs(x) >= y)
	61	return x;
5fafdf24	62	if (x < 0)
158142c2 FB	63	y = -y;
	64	y = (x + y) - y;
	65	if (y == 0.0)
	66	y = copysign(y, x);
	67	return y;
	68	}
	69
	70	#define rint qemu_rint
	71	#endif
	72
	73	/*----------------------------------------------------------------------------
	74	\| Software IEC/IEEE integer-to-floating-point conversion routines.
	75	----------------------------------------------------------------------------/
	76	float32 int32_to_float32(int v STATUS_PARAM)
	77	{
	78	return (float32)v;
	79	}
	80
75d62a58 JM	81	float32 uint32_to_float32(unsigned int v STATUS_PARAM)
	82	{
	83	return (float32)v;
	84	}
	85
158142c2 FB	86	float64 int32_to_float64(int v STATUS_PARAM)
	87	{
	88	return (float64)v;
	89	}
	90
75d62a58 JM	91	float64 uint32_to_float64(unsigned int v STATUS_PARAM)
	92	{
	93	return (float64)v;
	94	}
	95
158142c2 FB	96	#ifdef FLOATX80
	97	floatx80 int32_to_floatx80(int v STATUS_PARAM)
	98	{
	99	return (floatx80)v;
	100	}
	101	#endif
	102	float32 int64_to_float32( int64_t v STATUS_PARAM)
	103	{
	104	return (float32)v;
	105	}
75d62a58 JM	106	float32 uint64_to_float32( uint64_t v STATUS_PARAM)
	107	{
	108	return (float32)v;
	109	}
158142c2 FB	110	float64 int64_to_float64( int64_t v STATUS_PARAM)
	111	{
	112	return (float64)v;
	113	}
75d62a58 JM	114	float64 uint64_to_float64( uint64_t v STATUS_PARAM)
	115	{
	116	return (float64)v;
	117	}
158142c2 FB	118	#ifdef FLOATX80
	119	floatx80 int64_to_floatx80( int64_t v STATUS_PARAM)
	120	{
	121	return (floatx80)v;
	122	}
	123	#endif
	124
1b2b0af5 FB	125	/* XXX: this code implements the x86 behaviour, not the IEEE one. */
	126	#if HOST_LONG_BITS == 32
	127	static inline int long_to_int32(long a)
	128	{
	129	return a;
	130	}
	131	#else
	132	static inline int long_to_int32(long a)
	133	{
5fafdf24	134	if (a != (int32_t)a)
1b2b0af5 FB	135	a = 0x80000000;
	136	return a;
	137	}
	138	#endif
	139
158142c2 FB	140	/*----------------------------------------------------------------------------
	141	\| Software IEC/IEEE single-precision conversion routines.
	142	----------------------------------------------------------------------------/
	143	int float32_to_int32( float32 a STATUS_PARAM)
	144	{
1b2b0af5	145	return long_to_int32(lrintf(a));
158142c2 FB	146	}
	147	int float32_to_int32_round_to_zero( float32 a STATUS_PARAM)
	148	{
	149	return (int)a;
	150	}
	151	int64_t float32_to_int64( float32 a STATUS_PARAM)
	152	{
	153	return llrintf(a);
	154	}
	155
	156	int64_t float32_to_int64_round_to_zero( float32 a STATUS_PARAM)
	157	{
	158	return (int64_t)a;
	159	}
	160
	161	float64 float32_to_float64( float32 a STATUS_PARAM)
	162	{
	163	return a;
	164	}
	165	#ifdef FLOATX80
	166	floatx80 float32_to_floatx80( float32 a STATUS_PARAM)
	167	{
	168	return a;
	169	}
	170	#endif
	171
75d62a58 JM	172	unsigned int float32_to_uint32( float32 a STATUS_PARAM)
	173	{
	174	int64_t v;
	175	unsigned int res;
	176
	177	v = llrintf(a);
	178	if (v < 0) {
	179	res = 0;
	180	} else if (v > 0xffffffff) {
	181	res = 0xffffffff;
	182	} else {
	183	res = v;
	184	}
	185	return res;
	186	}
	187	unsigned int float32_to_uint32_round_to_zero( float32 a STATUS_PARAM)
	188	{
	189	int64_t v;
	190	unsigned int res;
	191
	192	v = (int64_t)a;
	193	if (v < 0) {
	194	res = 0;
	195	} else if (v > 0xffffffff) {
	196	res = 0xffffffff;
	197	} else {
	198	res = v;
	199	}
	200	return res;
	201	}
	202
158142c2 FB	203	/*----------------------------------------------------------------------------
	204	\| Software IEC/IEEE single-precision operations.
	205	----------------------------------------------------------------------------/
	206	float32 float32_round_to_int( float32 a STATUS_PARAM)
	207	{
	208	return rintf(a);
	209	}
	210
b109f9f8 FB	211	float32 float32_rem( float32 a, float32 b STATUS_PARAM)
	212	{
	213	return remainderf(a, b);
	214	}
	215
158142c2 FB	216	float32 float32_sqrt( float32 a STATUS_PARAM)
	217	{
	218	return sqrtf(a);
	219	}
750afe93	220	int float32_compare( float32 a, float32 b STATUS_PARAM )
b109f9f8 FB	221	{
b109f9f8 FB	222	if (a < b) {
30e7a22e	223	return float_relation_less;
b109f9f8	224	} else if (a == b) {
30e7a22e	225	return float_relation_equal;
b109f9f8	226	} else if (a > b) {
30e7a22e	227	return float_relation_greater;
b109f9f8	228	} else {
30e7a22e	229	return float_relation_unordered;
b109f9f8 FB	230	}
b109f9f8 FB	231	}
750afe93	232	int float32_compare_quiet( float32 a, float32 b STATUS_PARAM )
b109f9f8 FB	233	{
b109f9f8 FB	234	if (isless(a, b)) {
30e7a22e	235	return float_relation_less;
b109f9f8	236	} else if (a == b) {
30e7a22e	237	return float_relation_equal;
b109f9f8	238	} else if (isgreater(a, b)) {
30e7a22e	239	return float_relation_greater;
b109f9f8	240	} else {
30e7a22e	241	return float_relation_unordered;
b109f9f8 FB	242	}
b109f9f8 FB	243	}
750afe93	244	int float32_is_signaling_nan( float32 a1)
158142c2 FB	245	{
	246	float32u u;
	247	uint32_t a;
	248	u.f = a1;
	249	a = u.i;
	250	return ( ( ( a>>22 ) & 0x1FF ) == 0x1FE ) && ( a & 0x003FFFFF );
	251	}
	252
629bd74a AJ	253	int float32_is_nan( float32 a1 )
	254	{
	255	float32u u;
	256	uint64_t a;
	257	u.f = a1;
	258	a = u.i;
	259	return ( 0xFF800000 < ( a<<1 ) );
	260	}
	261
158142c2 FB	262	/*----------------------------------------------------------------------------
	263	\| Software IEC/IEEE double-precision conversion routines.
	264	----------------------------------------------------------------------------/
	265	int float64_to_int32( float64 a STATUS_PARAM)
	266	{
1b2b0af5	267	return long_to_int32(lrint(a));
158142c2 FB	268	}
	269	int float64_to_int32_round_to_zero( float64 a STATUS_PARAM)
	270	{
	271	return (int)a;
	272	}
	273	int64_t float64_to_int64( float64 a STATUS_PARAM)
	274	{
	275	return llrint(a);
	276	}
	277	int64_t float64_to_int64_round_to_zero( float64 a STATUS_PARAM)
	278	{
	279	return (int64_t)a;
	280	}
	281	float32 float64_to_float32( float64 a STATUS_PARAM)
	282	{
	283	return a;
	284	}
	285	#ifdef FLOATX80
	286	floatx80 float64_to_floatx80( float64 a STATUS_PARAM)
	287	{
	288	return a;
	289	}
	290	#endif
	291	#ifdef FLOAT128
	292	float128 float64_to_float128( float64 a STATUS_PARAM)
	293	{
	294	return a;
	295	}
	296	#endif
	297
75d62a58 JM	298	unsigned int float64_to_uint32( float64 a STATUS_PARAM)
	299	{
	300	int64_t v;
	301	unsigned int res;
	302
	303	v = llrint(a);
	304	if (v < 0) {
	305	res = 0;
	306	} else if (v > 0xffffffff) {
	307	res = 0xffffffff;
	308	} else {
	309	res = v;
	310	}
	311	return res;
	312	}
	313	unsigned int float64_to_uint32_round_to_zero( float64 a STATUS_PARAM)
	314	{
	315	int64_t v;
	316	unsigned int res;
	317
	318	v = (int64_t)a;
	319	if (v < 0) {
	320	res = 0;
	321	} else if (v > 0xffffffff) {
	322	res = 0xffffffff;
	323	} else {
	324	res = v;
	325	}
	326	return res;
	327	}
	328	uint64_t float64_to_uint64 (float64 a STATUS_PARAM)
	329	{
	330	int64_t v;
	331
	332	v = llrint(a + (float64)INT64_MIN);
	333
	334	return v - INT64_MIN;
	335	}
	336	uint64_t float64_to_uint64_round_to_zero (float64 a STATUS_PARAM)
	337	{
	338	int64_t v;
	339
	340	v = (int64_t)(a + (float64)INT64_MIN);
	341
	342	return v - INT64_MIN;
	343	}
	344
158142c2 FB	345	/*----------------------------------------------------------------------------
	346	\| Software IEC/IEEE double-precision operations.
	347	----------------------------------------------------------------------------/
fc81ba53	348	#if defined(__sun__) && defined(HOST_SOLARIS) && HOST_SOLARIS < 10
63a654bb TS	349	static inline float64 trunc(float64 x)
	350	{
	351	return x < 0 ? -floor(-x) : floor(x);
	352	}
	353	#endif
e6e5906b PB	354	float64 float64_trunc_to_int( float64 a STATUS_PARAM )
	355	{
	356	return trunc(a);
	357	}
	358
158142c2 FB	359	float64 float64_round_to_int( float64 a STATUS_PARAM )
	360	{
	361	#if defined(__arm__)
	362	switch(STATUS(float_rounding_mode)) {
	363	default:
	364	case float_round_nearest_even:
	365	asm("rndd %0, %1" : "=f" (a) : "f"(a));
	366	break;
	367	case float_round_down:
	368	asm("rnddm %0, %1" : "=f" (a) : "f"(a));
	369	break;
	370	case float_round_up:
	371	asm("rnddp %0, %1" : "=f" (a) : "f"(a));
	372	break;
	373	case float_round_to_zero:
	374	asm("rnddz %0, %1" : "=f" (a) : "f"(a));
	375	break;
	376	}
	377	#else
	378	return rint(a);
	379	#endif
	380	}
	381
b109f9f8 FB	382	float64 float64_rem( float64 a, float64 b STATUS_PARAM)
	383	{
	384	return remainder(a, b);
	385	}
	386
158142c2 FB	387	float64 float64_sqrt( float64 a STATUS_PARAM)
	388	{
	389	return sqrt(a);
	390	}
750afe93	391	int float64_compare( float64 a, float64 b STATUS_PARAM )
b109f9f8 FB	392	{
b109f9f8 FB	393	if (a < b) {
30e7a22e	394	return float_relation_less;
b109f9f8	395	} else if (a == b) {
30e7a22e	396	return float_relation_equal;
b109f9f8	397	} else if (a > b) {
30e7a22e	398	return float_relation_greater;
b109f9f8	399	} else {
30e7a22e	400	return float_relation_unordered;
b109f9f8 FB	401	}
b109f9f8 FB	402	}
750afe93	403	int float64_compare_quiet( float64 a, float64 b STATUS_PARAM )
b109f9f8 FB	404	{
b109f9f8 FB	405	if (isless(a, b)) {
30e7a22e	406	return float_relation_less;
b109f9f8	407	} else if (a == b) {
30e7a22e	408	return float_relation_equal;
b109f9f8	409	} else if (isgreater(a, b)) {
30e7a22e	410	return float_relation_greater;
b109f9f8	411	} else {
30e7a22e	412	return float_relation_unordered;
b109f9f8 FB	413	}
b109f9f8 FB	414	}
750afe93	415	int float64_is_signaling_nan( float64 a1)
158142c2 FB	416	{
	417	float64u u;
	418	uint64_t a;
	419	u.f = a1;
	420	a = u.i;
	421	return
	422	( ( ( a>>51 ) & 0xFFF ) == 0xFFE )
	423	&& ( a & LIT64( 0x0007FFFFFFFFFFFF ) );
	424
	425	}
	426
750afe93	427	int float64_is_nan( float64 a1 )
e6e5906b PB	428	{
	429	float64u u;
	430	uint64_t a;
	431	u.f = a1;
	432	a = u.i;
	433
1b2ad2ec	434	return ( LIT64( 0xFFF0000000000000 ) < (bits64) ( a<<1 ) );
e6e5906b PB	435
	436	}
	437
158142c2 FB	438	#ifdef FLOATX80
	439
	440	/*----------------------------------------------------------------------------
	441	\| Software IEC/IEEE extended double-precision conversion routines.
	442	----------------------------------------------------------------------------/
	443	int floatx80_to_int32( floatx80 a STATUS_PARAM)
	444	{
1b2b0af5	445	return long_to_int32(lrintl(a));
158142c2 FB	446	}
	447	int floatx80_to_int32_round_to_zero( floatx80 a STATUS_PARAM)
	448	{
	449	return (int)a;
	450	}
	451	int64_t floatx80_to_int64( floatx80 a STATUS_PARAM)
	452	{
	453	return llrintl(a);
	454	}
	455	int64_t floatx80_to_int64_round_to_zero( floatx80 a STATUS_PARAM)
	456	{
	457	return (int64_t)a;
	458	}
	459	float32 floatx80_to_float32( floatx80 a STATUS_PARAM)
	460	{
	461	return a;
	462	}
	463	float64 floatx80_to_float64( floatx80 a STATUS_PARAM)
	464	{
	465	return a;
	466	}
	467
	468	/*----------------------------------------------------------------------------
	469	\| Software IEC/IEEE extended double-precision operations.
	470	----------------------------------------------------------------------------/
	471	floatx80 floatx80_round_to_int( floatx80 a STATUS_PARAM)
	472	{
	473	return rintl(a);
	474	}
b109f9f8 FB	475	floatx80 floatx80_rem( floatx80 a, floatx80 b STATUS_PARAM)
	476	{
	477	return remainderl(a, b);
	478	}
158142c2 FB	479	floatx80 floatx80_sqrt( floatx80 a STATUS_PARAM)
	480	{
	481	return sqrtl(a);
	482	}
750afe93	483	int floatx80_compare( floatx80 a, floatx80 b STATUS_PARAM )
b109f9f8 FB	484	{
b109f9f8 FB	485	if (a < b) {
30e7a22e	486	return float_relation_less;
b109f9f8	487	} else if (a == b) {
30e7a22e	488	return float_relation_equal;
b109f9f8	489	} else if (a > b) {
30e7a22e	490	return float_relation_greater;
b109f9f8	491	} else {
30e7a22e	492	return float_relation_unordered;
b109f9f8 FB	493	}
b109f9f8 FB	494	}
750afe93	495	int floatx80_compare_quiet( floatx80 a, floatx80 b STATUS_PARAM )
b109f9f8 FB	496	{
b109f9f8 FB	497	if (isless(a, b)) {
30e7a22e	498	return float_relation_less;
b109f9f8	499	} else if (a == b) {
30e7a22e	500	return float_relation_equal;
b109f9f8	501	} else if (isgreater(a, b)) {
30e7a22e	502	return float_relation_greater;
b109f9f8	503	} else {
30e7a22e	504	return float_relation_unordered;
b109f9f8 FB	505	}
b109f9f8 FB	506	}
750afe93	507	int floatx80_is_signaling_nan( floatx80 a1)
1b2ad2ec AJ	508	{
	509	floatx80u u;
	510	uint64_t aLow;
	511	u.f = a1;
	512
	513	aLow = u.i.low & ~ LIT64( 0x4000000000000000 );
	514	return
	515	( ( u.i.high & 0x7FFF ) == 0x7FFF )
	516	&& (bits64) ( aLow<<1 )
	517	&& ( u.i.low == aLow );
	518	}
	519
	520	int floatx80_is_nan( floatx80 a1 )
158142c2 FB	521	{
	522	floatx80u u;
	523	u.f = a1;
	524	return ( ( u.i.high & 0x7FFF ) == 0x7FFF ) && (bits64) ( u.i.low<<1 );
	525	}
	526
	527	#endif