WebSVN – HelenOS – Diff – /trunk/uspace/softfloat/generic/softfloat.c


/*
 * Copyright (c) 2005 Josef Cejka
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup softfloat generic
 * @ingroup sfl
 * @brief Architecture independent parts of FPU software emulation library.
 * @{
 */
/** @file
 */
 
#include<softfloat.h>
#include<sftypes.h>
 
#include<add.h>
#include<sub.h>
#include<mul.h>
#include<div.h>
 
#include<conversion.h>
#include<comparison.h>
#include<other.h>
 
#include<functions.h>
 
/* Arithmetic functions */
 
float __addsf3(float a, float b)
{
    float32 fa, fb;
    fa.f = a;
    fb.f = b;
    if (fa.parts.sign != fb.parts.sign) {
        if (fa.parts.sign) {
            fa.parts.sign = 0;
            return subFloat32(fb, fa).f;
        };
        fb.parts.sign = 0;
        return subFloat32(fa, fb).f;
    }
    return addFloat32(fa, fb).f;
}
 
double __adddf3(double a, double b)
{
    float64 da, db;
    da.d = a;
    db.d = b;
    if (da.parts.sign != db.parts.sign) {
        if (da.parts.sign) {
            da.parts.sign = 0;
            return subFloat64(db, da).d;
        };
        db.parts.sign = 0;
        return subFloat64(da, db).d;
    }
    return addFloat64(da, db).d;
}
 
float __subsf3(float a, float b)
{
    float32 fa, fb;
    fa.f = a;
    fb.f = b;
    if (fa.parts.sign != fb.parts.sign) {
        fb.parts.sign = !fb.parts.sign;
        return addFloat32(fa, fb).f;
    }
    return subFloat32(fa, fb).f;
}
 
double __subdf3(double a, double b)
{
    float64 da, db;
    da.d = a;
    db.d = b;
    if (da.parts.sign != db.parts.sign) {
        db.parts.sign = !db.parts.sign;
        return addFloat64(da, db).d;
    }
    return subFloat64(da, db).d;
}
 
float __mulsf3(float a, float b)
{
    float32 fa, fb;
    fa.f = a;
    fb.f = b;
    return  mulFloat32(fa, fb).f;
}
 
double __muldf3(double a, double b)
{
    float64 da, db;
    da.d = a;
    db.d = b;
    return  mulFloat64(da, db).d;
}
 
float __divsf3(float a, float b)
{
    float32 fa, fb;
    fa.f = a;
    fb.f = b;
    return  divFloat32(fa, fb).f;
}
 
double __divdf3(double a, double b)
{
    float64 da, db;
    da.d = a;
    db.d = b;
    return  divFloat64(da, db).d;
}
 
float __negsf2(float a)
{
    float32 fa;
    fa.f = a;
    fa.parts.sign = !fa.parts.sign;
    return fa.f;
}
 
double __negdf2(double a)
{
    float64 fa;
    fa.d = a;
    fa.parts.sign = !fa.parts.sign;
    return fa.d;
}
 
/* Conversion functions */
 
double __extendsfdf2(float a)
{
    float32 fa;
    fa.f = a;
    return convertFloat32ToFloat64(fa).d;
}
 
float __truncdfsf2(double a)
{
    float64 da;
    da.d = a;
    return convertFloat64ToFloat32(da).f;
}
 
int __fixsfsi(float a)
{
    float32 fa;
    fa.f = a;
   
    return float32_to_int(fa);
}
int __fixdfsi(double a)
{
    float64 da;
    da.d = a;
   
    return float64_to_int(da);
}
 
long __fixsfdi(float a)
{
    float32 fa;
    fa.f = a;
   
    return float32_to_long(fa);
}
long __fixdfdi(double a)
{
    float64 da;
    da.d = a;
   
    return float64_to_long(da);
}
 
long long __fixsfti(float a)
{
    float32 fa;
    fa.f = a;
   
    return float32_to_longlong(fa);
}
long long __fixdfti(double a)
{
    float64 da;
    da.d = a;
   
    return float64_to_longlong(da);
}
 
unsigned int __fixunssfsi(float a)
{
    float32 fa;
    fa.f = a;
   
    return float32_to_uint(fa);
}
unsigned int __fixunsdfsi(double a)
{
    float64 da;
    da.d = a;
   
    return float64_to_uint(da);
}
 
unsigned long __fixunssfdi(float a)
{
    float32 fa;
    fa.f = a;
   
    return float32_to_ulong(fa);
}
unsigned long __fixunsdfdi(double a)
{
    float64 da;
    da.d = a;
   
    return float64_to_ulong(da);
}
 
unsigned long long __fixunssfti(float a)
{
    float32 fa;
    fa.f = a;
   
    return float32_to_ulonglong(fa);
}
unsigned long long __fixunsdfti(double a)
{
    float64 da;
    da.d = a;
   
    return float64_to_ulonglong(da);
}
 
float __floatsisf(int i)
{
    float32 fa;
   
    fa = int_to_float32(i);
    return fa.f;
}
double __floatsidf(int i)
{
    float64 da;
   
    da = int_to_float64(i);
    return da.d;
}
 
float __floatdisf(long i)
{
    float32 fa;
   
    fa = long_to_float32(i);
    return fa.f;
}
double __floatdidf(long i)
{
    float64 da;
   
    da = long_to_float64(i);
    return da.d;
}
 
float __floattisf(long long i)
{
    float32 fa;
   
    fa = longlong_to_float32(i);
    return fa.f;
}
double __floattidf(long long i)
{
    float64 da;
   
    da = longlong_to_float64(i);
    return da.d;
}
 
float __floatunsisf(unsigned int i)
{
    float32 fa;
   
    fa = uint_to_float32(i);
    return fa.f;
}
double __floatunsidf(unsigned int i)
{
    float64 da;
   
    da = uint_to_float64(i);
    return da.d;
}
 
float __floatundisf(unsigned long i)
{
    float32 fa;
   
    fa = ulong_to_float32(i);
    return fa.f;
}
double __floatundidf(unsigned long i)
{
    float64 da;
   
    da = ulong_to_float64(i);
    return da.d;
}
 
float __floatuntisf(unsigned long long i)
{
    float32 fa;
   
    fa = ulonglong_to_float32(i);
    return fa.f;
}
double __floatuntidf(unsigned long long i)
{
    float64 da;
   
    da = ulonglong_to_float64(i);
    return da.d;
}
 
/* Comparison functions */
/* Comparison functions */
 
/* a<b .. -1
 * a=b ..  0
 * a>b ..  1
 * */
 
int __cmpsf2(float a, float b)
{
    float32 fa, fb;
    fa.f = a;
    fb.f = b;
    if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) {
        return 1; /* no special constant for unordered - maybe signaled? */
    };
 
   
    if (isFloat32eq(fa, fb)) {
        return 0;
    };
   
    if (isFloat32lt(fa, fb)) {
        return -1;
        };
    return 1;
}
 
int __unordsf2(float a, float b)
{
    float32 fa, fb;
    fa.f = a;
    fb.f = b;
    return ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) );
}
 
/**
 * @return zero, if neither argument is a NaN and are equal
 * */
int __eqsf2(float a, float b)
{
    float32 fa, fb;
    fa.f = a;
    fb.f = b;
    if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) {
        /* TODO: sigNaNs*/
        return 1;
        };
    return isFloat32eq(fa, fb) - 1;
}
 
/* strange behavior, but it was in gcc documentation */
int __nesf2(float a, float b)
{
    return __eqsf2(a, b);
}
 
/* return value >= 0 if a>=b and neither is NaN */
int __gesf2(float a, float b)
{
    float32 fa, fb;
    fa.f = a;
    fb.f = b;
    if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) {
        /* TODO: sigNaNs*/
        return -1;
        };
   
    if (isFloat32eq(fa, fb)) {
        return 0;
    };
   
    if (isFloat32gt(fa, fb)) {
        return 1;
        };
   
    return -1;
}
 
/** Return negative value, if a<b and neither is NaN*/
int __ltsf2(float a, float b)
{
    float32 fa, fb;
    fa.f = a;
    fb.f = b;
    if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) {
        /* TODO: sigNaNs*/
        return 1;
        };
    if (isFloat32lt(fa, fb)) {
        return -1;
        };
    return 0;
}
 
/* return value <= 0 if a<=b and neither is NaN */
int __lesf2(float a, float b)
{
    float32 fa, fb;
    fa.f = a;
    fb.f = b;
    if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) {
        /* TODO: sigNaNs*/
        return 1;
        };
   
    if (isFloat32eq(fa, fb)) {
        return 0;
    };
   
    if (isFloat32lt(fa, fb)) {
        return -1;
        };
   
    return 1;
}
 
/** Return positive value, if a>b and neither is NaN*/
int __gtsf2(float a, float b)
{
    float32 fa, fb;
    fa.f = a;
    fb.f = b;
    if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) {
        /* TODO: sigNaNs*/
        return -1;
        };
    if (isFloat32gt(fa, fb)) {
        return 1;
        };
    return 0;
}
 
/* Other functions */
 
float __powisf2(float a, int b)
{
/* TODO: */
    float32 fa;
    fa.binary = FLOAT32_NAN;
    return fa.f;
}
 
 
/** @}
 */
 
 

Rev 1787	Rev 2071
1	/*	1	/*
2	* Copyright (C) 2005 Josef Cejka	2	* Copyright (c) 2005 Josef Cejka
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup softfloat generic	29	/** @addtogroup softfloat generic
30	* @ingroup sfl	30	* @ingroup sfl
31	* @brief Architecture independent parts of FPU software emulation library.	31	* @brief Architecture independent parts of FPU software emulation library.
32	* @{	32	* @{
33	*/	33	*/
34	/** @file	34	/** @file
35	*/	35	*/
36		36
37	#include<softfloat.h>	37	#include<softfloat.h>
38	#include<sftypes.h>	38	#include<sftypes.h>
39		39
40	#include<add.h>	40	#include<add.h>
41	#include<sub.h>	41	#include<sub.h>
42	#include<mul.h>	42	#include<mul.h>
43	#include<div.h>	43	#include<div.h>
44		44
45	#include<conversion.h>	45	#include<conversion.h>
46	#include<comparison.h>	46	#include<comparison.h>
47	#include<other.h>	47	#include<other.h>
48		48
49	#include<functions.h>	49	#include<functions.h>
50		50
51	/* Arithmetic functions */	51	/* Arithmetic functions */
52		52
53	float __addsf3(float a, float b)	53	float __addsf3(float a, float b)
54	{	54	{
55	float32 fa, fb;	55	float32 fa, fb;
56	fa.f = a;	56	fa.f = a;
57	fb.f = b;	57	fb.f = b;
58	if (fa.parts.sign != fb.parts.sign) {	58	if (fa.parts.sign != fb.parts.sign) {
59	if (fa.parts.sign) {	59	if (fa.parts.sign) {
60	fa.parts.sign = 0;	60	fa.parts.sign = 0;
61	return subFloat32(fb, fa).f;	61	return subFloat32(fb, fa).f;
62	};	62	};
63	fb.parts.sign = 0;	63	fb.parts.sign = 0;
64	return subFloat32(fa, fb).f;	64	return subFloat32(fa, fb).f;
65	}	65	}
66	return addFloat32(fa, fb).f;	66	return addFloat32(fa, fb).f;
67	}	67	}
68		68
69	double __adddf3(double a, double b)	69	double __adddf3(double a, double b)
70	{	70	{
71	float64 da, db;	71	float64 da, db;
72	da.d = a;	72	da.d = a;
73	db.d = b;	73	db.d = b;
74	if (da.parts.sign != db.parts.sign) {	74	if (da.parts.sign != db.parts.sign) {
75	if (da.parts.sign) {	75	if (da.parts.sign) {
76	da.parts.sign = 0;	76	da.parts.sign = 0;
77	return subFloat64(db, da).d;	77	return subFloat64(db, da).d;
78	};	78	};
79	db.parts.sign = 0;	79	db.parts.sign = 0;
80	return subFloat64(da, db).d;	80	return subFloat64(da, db).d;
81	}	81	}
82	return addFloat64(da, db).d;	82	return addFloat64(da, db).d;
83	}	83	}
84		84
85	float __subsf3(float a, float b)	85	float __subsf3(float a, float b)
86	{	86	{
87	float32 fa, fb;	87	float32 fa, fb;
88	fa.f = a;	88	fa.f = a;
89	fb.f = b;	89	fb.f = b;
90	if (fa.parts.sign != fb.parts.sign) {	90	if (fa.parts.sign != fb.parts.sign) {
91	fb.parts.sign = !fb.parts.sign;	91	fb.parts.sign = !fb.parts.sign;
92	return addFloat32(fa, fb).f;	92	return addFloat32(fa, fb).f;
93	}	93	}
94	return subFloat32(fa, fb).f;	94	return subFloat32(fa, fb).f;
95	}	95	}
96		96
97	double __subdf3(double a, double b)	97	double __subdf3(double a, double b)
98	{	98	{
99	float64 da, db;	99	float64 da, db;
100	da.d = a;	100	da.d = a;
101	db.d = b;	101	db.d = b;
102	if (da.parts.sign != db.parts.sign) {	102	if (da.parts.sign != db.parts.sign) {
103	db.parts.sign = !db.parts.sign;	103	db.parts.sign = !db.parts.sign;
104	return addFloat64(da, db).d;	104	return addFloat64(da, db).d;
105	}	105	}
106	return subFloat64(da, db).d;	106	return subFloat64(da, db).d;
107	}	107	}
108		108
109	float __mulsf3(float a, float b)	109	float __mulsf3(float a, float b)
110	{	110	{
111	float32 fa, fb;	111	float32 fa, fb;
112	fa.f = a;	112	fa.f = a;
113	fb.f = b;	113	fb.f = b;
114	return mulFloat32(fa, fb).f;	114	return mulFloat32(fa, fb).f;
115	}	115	}
116		116
117	double __muldf3(double a, double b)	117	double __muldf3(double a, double b)
118	{	118	{
119	float64 da, db;	119	float64 da, db;
120	da.d = a;	120	da.d = a;
121	db.d = b;	121	db.d = b;
122	return mulFloat64(da, db).d;	122	return mulFloat64(da, db).d;
123	}	123	}
124		124
125	float __divsf3(float a, float b)	125	float __divsf3(float a, float b)
126	{	126	{
127	float32 fa, fb;	127	float32 fa, fb;
128	fa.f = a;	128	fa.f = a;
129	fb.f = b;	129	fb.f = b;
130	return divFloat32(fa, fb).f;	130	return divFloat32(fa, fb).f;
131	}	131	}
132		132
133	double __divdf3(double a, double b)	133	double __divdf3(double a, double b)
134	{	134	{
135	float64 da, db;	135	float64 da, db;
136	da.d = a;	136	da.d = a;
137	db.d = b;	137	db.d = b;
138	return divFloat64(da, db).d;	138	return divFloat64(da, db).d;
139	}	139	}
140		140
141	float __negsf2(float a)	141	float __negsf2(float a)
142	{	142	{
143	float32 fa;	143	float32 fa;
144	fa.f = a;	144	fa.f = a;
145	fa.parts.sign = !fa.parts.sign;	145	fa.parts.sign = !fa.parts.sign;
146	return fa.f;	146	return fa.f;
147	}	147	}
148		148
149	double __negdf2(double a)	149	double __negdf2(double a)
150	{	150	{
151	float64 fa;	151	float64 fa;
152	fa.d = a;	152	fa.d = a;
153	fa.parts.sign = !fa.parts.sign;	153	fa.parts.sign = !fa.parts.sign;
154	return fa.d;	154	return fa.d;
155	}	155	}
156		156
157	/* Conversion functions */	157	/* Conversion functions */
158		158
159	double __extendsfdf2(float a)	159	double __extendsfdf2(float a)
160	{	160	{
161	float32 fa;	161	float32 fa;
162	fa.f = a;	162	fa.f = a;
163	return convertFloat32ToFloat64(fa).d;	163	return convertFloat32ToFloat64(fa).d;
164	}	164	}
165		165
166	float __truncdfsf2(double a)	166	float __truncdfsf2(double a)
167	{	167	{
168	float64 da;	168	float64 da;
169	da.d = a;	169	da.d = a;
170	return convertFloat64ToFloat32(da).f;	170	return convertFloat64ToFloat32(da).f;
171	}	171	}
172		172
173	int __fixsfsi(float a)	173	int __fixsfsi(float a)
174	{	174	{
175	float32 fa;	175	float32 fa;
176	fa.f = a;	176	fa.f = a;
177		177
178	return float32_to_int(fa);	178	return float32_to_int(fa);
179	}	179	}
180	int __fixdfsi(double a)	180	int __fixdfsi(double a)
181	{	181	{
182	float64 da;	182	float64 da;
183	da.d = a;	183	da.d = a;
184		184
185	return float64_to_int(da);	185	return float64_to_int(da);
186	}	186	}
187		187
188	long __fixsfdi(float a)	188	long __fixsfdi(float a)
189	{	189	{
190	float32 fa;	190	float32 fa;
191	fa.f = a;	191	fa.f = a;
192		192
193	return float32_to_long(fa);	193	return float32_to_long(fa);
194	}	194	}
195	long __fixdfdi(double a)	195	long __fixdfdi(double a)
196	{	196	{
197	float64 da;	197	float64 da;
198	da.d = a;	198	da.d = a;
199		199
200	return float64_to_long(da);	200	return float64_to_long(da);
201	}	201	}
202		202
203	long long __fixsfti(float a)	203	long long __fixsfti(float a)
204	{	204	{
205	float32 fa;	205	float32 fa;
206	fa.f = a;	206	fa.f = a;
207		207
208	return float32_to_longlong(fa);	208	return float32_to_longlong(fa);
209	}	209	}
210	long long __fixdfti(double a)	210	long long __fixdfti(double a)
211	{	211	{
212	float64 da;	212	float64 da;
213	da.d = a;	213	da.d = a;
214		214
215	return float64_to_longlong(da);	215	return float64_to_longlong(da);
216	}	216	}
217		217
218	unsigned int __fixunssfsi(float a)	218	unsigned int __fixunssfsi(float a)
219	{	219	{
220	float32 fa;	220	float32 fa;
221	fa.f = a;	221	fa.f = a;
222		222
223	return float32_to_uint(fa);	223	return float32_to_uint(fa);
224	}	224	}
225	unsigned int __fixunsdfsi(double a)	225	unsigned int __fixunsdfsi(double a)
226	{	226	{
227	float64 da;	227	float64 da;
228	da.d = a;	228	da.d = a;
229		229
230	return float64_to_uint(da);	230	return float64_to_uint(da);
231	}	231	}
232		232
233	unsigned long __fixunssfdi(float a)	233	unsigned long __fixunssfdi(float a)
234	{	234	{
235	float32 fa;	235	float32 fa;
236	fa.f = a;	236	fa.f = a;
237		237
238	return float32_to_ulong(fa);	238	return float32_to_ulong(fa);
239	}	239	}
240	unsigned long __fixunsdfdi(double a)	240	unsigned long __fixunsdfdi(double a)
241	{	241	{
242	float64 da;	242	float64 da;
243	da.d = a;	243	da.d = a;
244		244
245	return float64_to_ulong(da);	245	return float64_to_ulong(da);
246	}	246	}
247		247
248	unsigned long long __fixunssfti(float a)	248	unsigned long long __fixunssfti(float a)
249	{	249	{
250	float32 fa;	250	float32 fa;
251	fa.f = a;	251	fa.f = a;
252		252
253	return float32_to_ulonglong(fa);	253	return float32_to_ulonglong(fa);
254	}	254	}
255	unsigned long long __fixunsdfti(double a)	255	unsigned long long __fixunsdfti(double a)
256	{	256	{
257	float64 da;	257	float64 da;
258	da.d = a;	258	da.d = a;
259		259
260	return float64_to_ulonglong(da);	260	return float64_to_ulonglong(da);
261	}	261	}
262		262
263	float __floatsisf(int i)	263	float __floatsisf(int i)
264	{	264	{
265	float32 fa;	265	float32 fa;
266		266
267	fa = int_to_float32(i);	267	fa = int_to_float32(i);
268	return fa.f;	268	return fa.f;
269	}	269	}
270	double __floatsidf(int i)	270	double __floatsidf(int i)
271	{	271	{
272	float64 da;	272	float64 da;
273		273
274	da = int_to_float64(i);	274	da = int_to_float64(i);
275	return da.d;	275	return da.d;
276	}	276	}
277		277
278	float __floatdisf(long i)	278	float __floatdisf(long i)
279	{	279	{
280	float32 fa;	280	float32 fa;
281		281
282	fa = long_to_float32(i);	282	fa = long_to_float32(i);
283	return fa.f;	283	return fa.f;
284	}	284	}
285	double __floatdidf(long i)	285	double __floatdidf(long i)
286	{	286	{
287	float64 da;	287	float64 da;
288		288
289	da = long_to_float64(i);	289	da = long_to_float64(i);
290	return da.d;	290	return da.d;
291	}	291	}
292		292
293	float __floattisf(long long i)	293	float __floattisf(long long i)
294	{	294	{
295	float32 fa;	295	float32 fa;
296		296
297	fa = longlong_to_float32(i);	297	fa = longlong_to_float32(i);
298	return fa.f;	298	return fa.f;
299	}	299	}
300	double __floattidf(long long i)	300	double __floattidf(long long i)
301	{	301	{
302	float64 da;	302	float64 da;
303		303
304	da = longlong_to_float64(i);	304	da = longlong_to_float64(i);
305	return da.d;	305	return da.d;
306	}	306	}
307		307
308	float __floatunsisf(unsigned int i)	308	float __floatunsisf(unsigned int i)
309	{	309	{
310	float32 fa;	310	float32 fa;
311		311
312	fa = uint_to_float32(i);	312	fa = uint_to_float32(i);
313	return fa.f;	313	return fa.f;
314	}	314	}
315	double __floatunsidf(unsigned int i)	315	double __floatunsidf(unsigned int i)
316	{	316	{
317	float64 da;	317	float64 da;
318		318
319	da = uint_to_float64(i);	319	da = uint_to_float64(i);
320	return da.d;	320	return da.d;
321	}	321	}
322		322
323	float __floatundisf(unsigned long i)	323	float __floatundisf(unsigned long i)
324	{	324	{
325	float32 fa;	325	float32 fa;
326		326
327	fa = ulong_to_float32(i);	327	fa = ulong_to_float32(i);
328	return fa.f;	328	return fa.f;
329	}	329	}
330	double __floatundidf(unsigned long i)	330	double __floatundidf(unsigned long i)
331	{	331	{
332	float64 da;	332	float64 da;
333		333
334	da = ulong_to_float64(i);	334	da = ulong_to_float64(i);
335	return da.d;	335	return da.d;
336	}	336	}
337		337
338	float __floatuntisf(unsigned long long i)	338	float __floatuntisf(unsigned long long i)
339	{	339	{
340	float32 fa;	340	float32 fa;
341		341
342	fa = ulonglong_to_float32(i);	342	fa = ulonglong_to_float32(i);
343	return fa.f;	343	return fa.f;
344	}	344	}
345	double __floatuntidf(unsigned long long i)	345	double __floatuntidf(unsigned long long i)
346	{	346	{
347	float64 da;	347	float64 da;
348		348
349	da = ulonglong_to_float64(i);	349	da = ulonglong_to_float64(i);
350	return da.d;	350	return da.d;
351	}	351	}
352		352
353	/* Comparison functions */	353	/* Comparison functions */
354	/* Comparison functions */	354	/* Comparison functions */
355		355
356	/* a<b .. -1	356	/* a<b .. -1
357	* a=b .. 0	357	* a=b .. 0
358	* a>b .. 1	358	* a>b .. 1
359	* */	359	* */
360		360
361	int __cmpsf2(float a, float b)	361	int __cmpsf2(float a, float b)
362	{	362	{
363	float32 fa, fb;	363	float32 fa, fb;
364	fa.f = a;	364	fa.f = a;
365	fb.f = b;	365	fb.f = b;
366	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {	366	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {
367	return 1; /* no special constant for unordered - maybe signaled? */	367	return 1; /* no special constant for unordered - maybe signaled? */
368	};	368	};
369		369
370		370
371	if (isFloat32eq(fa, fb)) {	371	if (isFloat32eq(fa, fb)) {
372	return 0;	372	return 0;
373	};	373	};
374		374
375	if (isFloat32lt(fa, fb)) {	375	if (isFloat32lt(fa, fb)) {
376	return -1;	376	return -1;
377	};	377	};
378	return 1;	378	return 1;
379	}	379	}
380		380
381	int __unordsf2(float a, float b)	381	int __unordsf2(float a, float b)
382	{	382	{
383	float32 fa, fb;	383	float32 fa, fb;
384	fa.f = a;	384	fa.f = a;
385	fb.f = b;	385	fb.f = b;
386	return ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) );	386	return ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) );
387	}	387	}
388		388
389	/**	389	/**
390	* @return zero, if neither argument is a NaN and are equal	390	* @return zero, if neither argument is a NaN and are equal
391	* */	391	* */
392	int __eqsf2(float a, float b)	392	int __eqsf2(float a, float b)
393	{	393	{
394	float32 fa, fb;	394	float32 fa, fb;
395	fa.f = a;	395	fa.f = a;
396	fb.f = b;	396	fb.f = b;
397	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {	397	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {
398	/* TODO: sigNaNs*/	398	/* TODO: sigNaNs*/
399	return 1;	399	return 1;
400	};	400	};
401	return isFloat32eq(fa, fb) - 1;	401	return isFloat32eq(fa, fb) - 1;
402	}	402	}
403		403
404	/* strange behavior, but it was in gcc documentation */	404	/* strange behavior, but it was in gcc documentation */
405	int __nesf2(float a, float b)	405	int __nesf2(float a, float b)
406	{	406	{
407	return __eqsf2(a, b);	407	return __eqsf2(a, b);
408	}	408	}
409		409
410	/* return value >= 0 if a>=b and neither is NaN */	410	/* return value >= 0 if a>=b and neither is NaN */
411	int __gesf2(float a, float b)	411	int __gesf2(float a, float b)
412	{	412	{
413	float32 fa, fb;	413	float32 fa, fb;
414	fa.f = a;	414	fa.f = a;
415	fb.f = b;	415	fb.f = b;
416	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {	416	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {
417	/* TODO: sigNaNs*/	417	/* TODO: sigNaNs*/
418	return -1;	418	return -1;
419	};	419	};
420		420
421	if (isFloat32eq(fa, fb)) {	421	if (isFloat32eq(fa, fb)) {
422	return 0;	422	return 0;
423	};	423	};
424		424
425	if (isFloat32gt(fa, fb)) {	425	if (isFloat32gt(fa, fb)) {
426	return 1;	426	return 1;
427	};	427	};
428		428
429	return -1;	429	return -1;
430	}	430	}
431		431
432	/** Return negative value, if a<b and neither is NaN*/	432	/** Return negative value, if a<b and neither is NaN*/
433	int __ltsf2(float a, float b)	433	int __ltsf2(float a, float b)
434	{	434	{
435	float32 fa, fb;	435	float32 fa, fb;
436	fa.f = a;	436	fa.f = a;
437	fb.f = b;	437	fb.f = b;
438	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {	438	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {
439	/* TODO: sigNaNs*/	439	/* TODO: sigNaNs*/
440	return 1;	440	return 1;
441	};	441	};
442	if (isFloat32lt(fa, fb)) {	442	if (isFloat32lt(fa, fb)) {
443	return -1;	443	return -1;
444	};	444	};
445	return 0;	445	return 0;
446	}	446	}
447		447
448	/* return value <= 0 if a<=b and neither is NaN */	448	/* return value <= 0 if a<=b and neither is NaN */
449	int __lesf2(float a, float b)	449	int __lesf2(float a, float b)
450	{	450	{
451	float32 fa, fb;	451	float32 fa, fb;
452	fa.f = a;	452	fa.f = a;
453	fb.f = b;	453	fb.f = b;
454	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {	454	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {
455	/* TODO: sigNaNs*/	455	/* TODO: sigNaNs*/
456	return 1;	456	return 1;
457	};	457	};
458		458
459	if (isFloat32eq(fa, fb)) {	459	if (isFloat32eq(fa, fb)) {
460	return 0;	460	return 0;
461	};	461	};
462		462
463	if (isFloat32lt(fa, fb)) {	463	if (isFloat32lt(fa, fb)) {
464	return -1;	464	return -1;
465	};	465	};
466		466
467	return 1;	467	return 1;
468	}	468	}
469		469
470	/** Return positive value, if a>b and neither is NaN*/	470	/** Return positive value, if a>b and neither is NaN*/
471	int __gtsf2(float a, float b)	471	int __gtsf2(float a, float b)
472	{	472	{
473	float32 fa, fb;	473	float32 fa, fb;
474	fa.f = a;	474	fa.f = a;
475	fb.f = b;	475	fb.f = b;
476	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {	476	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {
477	/* TODO: sigNaNs*/	477	/* TODO: sigNaNs*/
478	return -1;	478	return -1;
479	};	479	};
480	if (isFloat32gt(fa, fb)) {	480	if (isFloat32gt(fa, fb)) {
481	return 1;	481	return 1;
482	};	482	};
483	return 0;	483	return 0;
484	}	484	}
485		485
486	/* Other functions */	486	/* Other functions */
487		487
488	float __powisf2(float a, int b)	488	float __powisf2(float a, int b)
489	{	489	{
490	/* TODO: */	490	/* TODO: */
491	float32 fa;	491	float32 fa;
492	fa.binary = FLOAT32_NAN;	492	fa.binary = FLOAT32_NAN;
493	return fa.f;	493	return fa.f;
494	}	494	}
495		495
496		496
497	/** @}	497	/** @}
498	*/	498	*/
499		499
500		500

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(root)/trunk/uspace/softfloat/generic/softfloat.c – Rev 1787 → 2071