WebSVN – HelenOS-historic – Diff – /uspace/trunk/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.
 */
 
#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<arch.h>
#include<types.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)
{
}
 
float __floatdisf(long i)
{
    float32 fa;
   
    fa = long_to_float32(i);
    return fa.f;
}
double __floatdidf(long i)
{
}
 
float __floattisf(long long i)
{
    float32 fa;
   
    fa = longlong_to_float32(i);
    return fa.f;
}
double __floattidf(long long i)
{
}
 
float __floatunsisf(unsigned int i)
{
    float32 fa;
   
    fa = uint_to_float32(i);
    return fa.f;
}
double __floatunsidf(unsigned int i)
{
}
 
float __floatundisf(unsigned long i)
{
    float32 fa;
   
    fa = ulong_to_float32(i);
    return fa.f;
}
double __floatundidf(unsigned long i)
{
}
 
float __floatuntisf(unsigned long long i)
{
    float32 fa;
   
    fa = ulonglong_to_float32(i);
    return fa.f;
}
double __floatuntidf(unsigned long long i)
{
}
 
/* 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: */
}
 
float __mulsc3(float a, float b, float c, float d)
{
/* TODO: */
}
 
float __divsc3(float a, float b, float c, float d)
{
/* TODO: */
}
 
 

Rev 865	Rev 874
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	#include<softfloat.h>	29	#include<softfloat.h>
30	#include<sftypes.h>	30	#include<sftypes.h>
31		31
32	#include<add.h>	32	#include<add.h>
33	#include<sub.h>	33	#include<sub.h>
34	#include<mul.h>	34	#include<mul.h>
35	#include<div.h>	35	#include<div.h>
36		36
37	#include<conversion.h>	37	#include<conversion.h>
38	#include<comparison.h>	38	#include<comparison.h>
39	#include<other.h>	39	#include<other.h>
40		40
41	#include<arch.h>	41	#include<arch.h>
42	#include<types.h>	42	#include<types.h>
43	#include<functions.h>	43	#include<functions.h>
44		44
45	/* Arithmetic functions */	45	/* Arithmetic functions */
46		46
47	float __addsf3(float a, float b)	47	float __addsf3(float a, float b)
48	{	48	{
49	float32 fa, fb;	49	float32 fa, fb;
50	fa.f = a;	50	fa.f = a;
51	fb.f = b;	51	fb.f = b;
52	if (fa.parts.sign != fb.parts.sign) {	52	if (fa.parts.sign != fb.parts.sign) {
53	if (fa.parts.sign) {	53	if (fa.parts.sign) {
54	fa.parts.sign = 0;	54	fa.parts.sign = 0;
55	return subFloat32(fb, fa).f;	55	return subFloat32(fb, fa).f;
56	};	56	};
57	fb.parts.sign = 0;	57	fb.parts.sign = 0;
58	return subFloat32(fa, fb).f;	58	return subFloat32(fa, fb).f;
59	}	59	}
60	return addFloat32(fa, fb).f;	60	return addFloat32(fa, fb).f;
61	}	61	}
62		62
63	double __adddf3(double a, double b)	63	double __adddf3(double a, double b)
64	{	64	{
65	float64 da, db;	65	float64 da, db;
66	da.d = a;	66	da.d = a;
67	db.d = b;	67	db.d = b;
68	if (da.parts.sign != db.parts.sign) {	68	if (da.parts.sign != db.parts.sign) {
69	if (da.parts.sign) {	69	if (da.parts.sign) {
70	da.parts.sign = 0;	70	da.parts.sign = 0;
71	return subFloat64(db, da).d;	71	return subFloat64(db, da).d;
72	};	72	};
73	db.parts.sign = 0;	73	db.parts.sign = 0;
74	return subFloat64(da, db).d;	74	return subFloat64(da, db).d;
75	}	75	}
76	return addFloat64(da, db).d;	76	return addFloat64(da, db).d;
77	}	77	}
78		78
79	float __subsf3(float a, float b)	79	float __subsf3(float a, float b)
80	{	80	{
81	float32 fa, fb;	81	float32 fa, fb;
82	fa.f = a;	82	fa.f = a;
83	fb.f = b;	83	fb.f = b;
84	if (fa.parts.sign != fb.parts.sign) {	84	if (fa.parts.sign != fb.parts.sign) {
85	fb.parts.sign = !fb.parts.sign;	85	fb.parts.sign = !fb.parts.sign;
86	return addFloat32(fa, fb).f;	86	return addFloat32(fa, fb).f;
87	}	87	}
88	return subFloat32(fa, fb).f;	88	return subFloat32(fa, fb).f;
89	}	89	}
90		90
91	double __subdf3(double a, double b)	91	double __subdf3(double a, double b)
92	{	92	{
93	float64 da, db;	93	float64 da, db;
94	da.d = a;	94	da.d = a;
95	db.d = b;	95	db.d = b;
96	if (da.parts.sign != db.parts.sign) {	96	if (da.parts.sign != db.parts.sign) {
97	db.parts.sign = !db.parts.sign;	97	db.parts.sign = !db.parts.sign;
98	return addFloat64(da, db).d;	98	return addFloat64(da, db).d;
99	}	99	}
100	return subFloat64(da, db).d;	100	return subFloat64(da, db).d;
101	}	101	}
102		102
103	float __mulsf3(float a, float b)	103	float __mulsf3(float a, float b)
104	{	104	{
105	float32 fa, fb;	105	float32 fa, fb;
106	fa.f = a;	106	fa.f = a;
107	fb.f = b;	107	fb.f = b;
108	return mulFloat32(fa, fb).f;	108	return mulFloat32(fa, fb).f;
109	}	109	}
110		110
111	double __muldf3(double a, double b)	111	double __muldf3(double a, double b)
112	{	112	{
113	float64 da, db;	113	float64 da, db;
114	da.d = a;	114	da.d = a;
115	db.d = b;	115	db.d = b;
116	return mulFloat64(da, db).d;	116	return mulFloat64(da, db).d;
117	}	117	}
118		118
119	float __divsf3(float a, float b)	119	float __divsf3(float a, float b)
120	{	120	{
121	float32 fa, fb;	121	float32 fa, fb;
122	fa.f = a;	122	fa.f = a;
123	fb.f = b;	123	fb.f = b;
124	return divFloat32(fa, fb).f;	124	return divFloat32(fa, fb).f;
125	}	125	}
126		126
127	double __divdf3(double a, double b)	127	double __divdf3(double a, double b)
128	{	128	{
129	float64 da, db;	129	float64 da, db;
130	da.d = a;	130	da.d = a;
131	db.d = b;	131	db.d = b;
132	return divFloat64(da, db).d;	132	return divFloat64(da, db).d;
133	}	133	}
134		134
135	float __negsf2(float a)	135	float __negsf2(float a)
136	{	136	{
137	float32 fa;	137	float32 fa;
138	fa.f = a;	138	fa.f = a;
139	fa.parts.sign = !fa.parts.sign;	139	fa.parts.sign = !fa.parts.sign;
140	return fa.f;	140	return fa.f;
141	}	141	}
142		142
143	double __negdf2(double a)	143	double __negdf2(double a)
144	{	144	{
145	float64 fa;	145	float64 fa;
146	fa.d = a;	146	fa.d = a;
147	fa.parts.sign = !fa.parts.sign;	147	fa.parts.sign = !fa.parts.sign;
148	return fa.d;	148	return fa.d;
149	}	149	}
150		150
151	/* Conversion functions */	151	/* Conversion functions */
152		152
153	double __extendsfdf2(float a)	153	double __extendsfdf2(float a)
154	{	154	{
155	float32 fa;	155	float32 fa;
156	fa.f = a;	156	fa.f = a;
157	return convertFloat32ToFloat64(fa).d;	157	return convertFloat32ToFloat64(fa).d;
158	}	158	}
159		159
160	float __truncdfsf2(double a)	160	float __truncdfsf2(double a)
161	{	161	{
162	float64 da;	162	float64 da;
163	da.d = a;	163	da.d = a;
164	return convertFloat64ToFloat32(da).f;	164	return convertFloat64ToFloat32(da).f;
165	}	165	}
166		166
167	int __fixsfsi(float a)	167	int __fixsfsi(float a)
168	{	168	{
169	float32 fa;	169	float32 fa;
170	fa.f = a;	170	fa.f = a;
171		171
172	return float32_to_int(fa);	172	return float32_to_int(fa);
173	}	173	}
174	int __fixdfsi(double a)	174	int __fixdfsi(double a)
175	{	175	{
176	float64 da;	176	float64 da;
177	da.d = a;	177	da.d = a;
178		178
179	return float64_to_int(da);	179	return float64_to_int(da);
180	}	180	}
181		181
182	long __fixsfdi(float a)	182	long __fixsfdi(float a)
183	{	183	{
184	float32 fa;	184	float32 fa;
185	fa.f = a;	185	fa.f = a;
186		186
187	return float32_to_long(fa);	187	return float32_to_long(fa);
188	}	188	}
189	long __fixdfdi(double a)	189	long __fixdfdi(double a)
190	{	190	{
191	float64 da;	191	float64 da;
192	da.d = a;	192	da.d = a;
193		193
194	return float64_to_long(da);	194	return float64_to_long(da);
195	}	195	}
196		196
197	long long __fixsfti(float a)	197	long long __fixsfti(float a)
198	{	198	{
199	float32 fa;	199	float32 fa;
200	fa.f = a;	200	fa.f = a;
201		201
202	return float32_to_longlong(fa);	202	return float32_to_longlong(fa);
203	}	203	}
204	long long __fixdfti(double a)	204	long long __fixdfti(double a)
205	{	205	{
206	float64 da;	206	float64 da;
207	da.d = a;	207	da.d = a;
208		208
209	return float64_to_longlong(da);	209	return float64_to_longlong(da);
210	}	210	}
211		211
212	unsigned int __fixunssfsi(float a)	212	unsigned int __fixunssfsi(float a)
213	{	213	{
214	float32 fa;	214	float32 fa;
215	fa.f = a;	215	fa.f = a;
216		216
217	return float32_to_uint(fa);	217	return float32_to_uint(fa);
218	}	218	}
219	unsigned int __fixunsdfsi(double a)	219	unsigned int __fixunsdfsi(double a)
220	{	220	{
221	float64 da;	221	float64 da;
222	da.d = a;	222	da.d = a;
223		223
224	return float64_to_uint(da);	224	return float64_to_uint(da);
225	}	225	}
226		226
227	unsigned long __fixunssfdi(float a)	227	unsigned long __fixunssfdi(float a)
228	{	228	{
229	float32 fa;	229	float32 fa;
230	fa.f = a;	230	fa.f = a;
231		231
232	return float32_to_ulong(fa);	232	return float32_to_ulong(fa);
233	}	233	}
234	unsigned long __fixunsdfdi(double a)	234	unsigned long __fixunsdfdi(double a)
235	{	235	{
236	float64 da;	236	float64 da;
237	da.d = a;	237	da.d = a;
238		238
239	return float64_to_ulong(da);	239	return float64_to_ulong(da);
240	}	240	}
241		241
242	unsigned long long __fixunssfti(float a)	242	unsigned long long __fixunssfti(float a)
243	{	243	{
244	float32 fa;	244	float32 fa;
245	fa.f = a;	245	fa.f = a;
246		246
247	return float32_to_ulonglong(fa);	247	return float32_to_ulonglong(fa);
248	}	248	}
249	unsigned long long __fixunsdfti(double a)	249	unsigned long long __fixunsdfti(double a)
250	{	250	{
251	float64 da;	251	float64 da;
252	da.d = a;	252	da.d = a;
253		253
254	return float64_to_ulonglong(da);	254	return float64_to_ulonglong(da);
255	}	255	}
256		256
257	float __floatsisf(int i)	257	float __floatsisf(int i)
258	{	258	{
-		259	float32 fa;
-		260
-		261	fa = int_to_float32(i);
-		262	return fa.f;
259	}	263	}
260	double __floatsidf(int i)	264	double __floatsidf(int i)
261	{	265	{
262	}	266	}
263		267
264	float __floatdisf(long i)	268	float __floatdisf(long i)
265	{	269	{
-		270	float32 fa;
-		271
-		272	fa = long_to_float32(i);
-		273	return fa.f;
266	}	274	}
267	double __floatdidf(long i)	275	double __floatdidf(long i)
268	{	276	{
269	}	277	}
270		278
271	float __floattisf(long long i)	279	float __floattisf(long long i)
272	{	280	{
-		281	float32 fa;
-		282
-		283	fa = longlong_to_float32(i);
-		284	return fa.f;
273	}	285	}
274	double __floattidf(long long i)	286	double __floattidf(long long i)
275	{	287	{
276	}	288	}
277		289
278	float __floatunsisf(unsigned int i)	290	float __floatunsisf(unsigned int i)
279	{	291	{
-		292	float32 fa;
-		293
-		294	fa = uint_to_float32(i);
-		295	return fa.f;
280	}	296	}
281	double __floatunsidf(unsigned int i)	297	double __floatunsidf(unsigned int i)
282	{	298	{
283	}	299	}
284		300
285	float __floatundisf(unsigned long i)	301	float __floatundisf(unsigned long i)
286	{	302	{
-		303	float32 fa;
-		304
-		305	fa = ulong_to_float32(i);
-		306	return fa.f;
287	}	307	}
288	double __floatundidf(unsigned long i)	308	double __floatundidf(unsigned long i)
289	{	309	{
290	}	310	}
291		311
292	float __floatuntisf(unsigned long long i)	312	float __floatuntisf(unsigned long long i)
293	{	313	{
-		314	float32 fa;
-		315
-		316	fa = ulonglong_to_float32(i);
-		317	return fa.f;
294	}	318	}
295	double __floatuntidf(unsigned long long i)	319	double __floatuntidf(unsigned long long i)
296	{	320	{
297	}	321	}
298		322
299	/* Comparison functions */	323	/* Comparison functions */
300	/* Comparison functions */	324	/* Comparison functions */
301		325
302	/* a<b .. -1	326	/* a<b .. -1
303	* a=b .. 0	327	* a=b .. 0
304	* a>b .. 1	328	* a>b .. 1
305	* */	329	* */
306		330
307	int __cmpsf2(float a, float b)	331	int __cmpsf2(float a, float b)
308	{	332	{
309	float32 fa, fb;	333	float32 fa, fb;
310	fa.f = a;	334	fa.f = a;
311	fb.f = b;	335	fb.f = b;
312	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {	336	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {
313	return 1; /* no special constant for unordered - maybe signaled? */	337	return 1; /* no special constant for unordered - maybe signaled? */
314	};	338	};
315		339
316		340
317	if (isFloat32eq(fa, fb)) {	341	if (isFloat32eq(fa, fb)) {
318	return 0;	342	return 0;
319	};	343	};
320		344
321	if (isFloat32lt(fa, fb)) {	345	if (isFloat32lt(fa, fb)) {
322	return -1;	346	return -1;
323	};	347	};
324	return 1;	348	return 1;
325	}	349	}
326		350
327	int __unordsf2(float a, float b)	351	int __unordsf2(float a, float b)
328	{	352	{
329	float32 fa, fb;	353	float32 fa, fb;
330	fa.f = a;	354	fa.f = a;
331	fb.f = b;	355	fb.f = b;
332	return ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) );	356	return ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) );
333	}	357	}
334		358
335	/**	359	/**
336	* @return zero, if neither argument is a NaN and are equal	360	* @return zero, if neither argument is a NaN and are equal
337	* */	361	* */
338	int __eqsf2(float a, float b)	362	int __eqsf2(float a, float b)
339	{	363	{
340	float32 fa, fb;	364	float32 fa, fb;
341	fa.f = a;	365	fa.f = a;
342	fb.f = b;	366	fb.f = b;
343	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {	367	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {
344	/* TODO: sigNaNs*/	368	/* TODO: sigNaNs*/
345	return 1;	369	return 1;
346	};	370	};
347	return isFloat32eq(fa, fb) - 1;	371	return isFloat32eq(fa, fb) - 1;
348	}	372	}
349		373
350	/* strange behavior, but it was in gcc documentation */	374	/* strange behavior, but it was in gcc documentation */
351	int __nesf2(float a, float b)	375	int __nesf2(float a, float b)
352	{	376	{
353	return __eqsf2(a, b);	377	return __eqsf2(a, b);
354	}	378	}
355		379
356	/* return value >= 0 if a>=b and neither is NaN */	380	/* return value >= 0 if a>=b and neither is NaN */
357	int __gesf2(float a, float b)	381	int __gesf2(float a, float b)
358	{	382	{
359	float32 fa, fb;	383	float32 fa, fb;
360	fa.f = a;	384	fa.f = a;
361	fb.f = b;	385	fb.f = b;
362	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {	386	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {
363	/* TODO: sigNaNs*/	387	/* TODO: sigNaNs*/
364	return -1;	388	return -1;
365	};	389	};
366		390
367	if (isFloat32eq(fa, fb)) {	391	if (isFloat32eq(fa, fb)) {
368	return 0;	392	return 0;
369	};	393	};
370		394
371	if (isFloat32gt(fa, fb)) {	395	if (isFloat32gt(fa, fb)) {
372	return 1;	396	return 1;
373	};	397	};
374		398
375	return -1;	399	return -1;
376	}	400	}
377		401
378	/** Return negative value, if a<b and neither is NaN*/	402	/** Return negative value, if a<b and neither is NaN*/
379	int __ltsf2(float a, float b)	403	int __ltsf2(float a, float b)
380	{	404	{
381	float32 fa, fb;	405	float32 fa, fb;
382	fa.f = a;	406	fa.f = a;
383	fb.f = b;	407	fb.f = b;
384	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {	408	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {
385	/* TODO: sigNaNs*/	409	/* TODO: sigNaNs*/
386	return 1;	410	return 1;
387	};	411	};
388	if (isFloat32lt(fa, fb)) {	412	if (isFloat32lt(fa, fb)) {
389	return -1;	413	return -1;
390	};	414	};
391	return 0;	415	return 0;
392	}	416	}
393		417
394	/* return value <= 0 if a<=b and neither is NaN */	418	/* return value <= 0 if a<=b and neither is NaN */
395	int __lesf2(float a, float b)	419	int __lesf2(float a, float b)
396	{	420	{
397	float32 fa, fb;	421	float32 fa, fb;
398	fa.f = a;	422	fa.f = a;
399	fb.f = b;	423	fb.f = b;
400	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {	424	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {
401	/* TODO: sigNaNs*/	425	/* TODO: sigNaNs*/
402	return 1;	426	return 1;
403	};	427	};
404		428
405	if (isFloat32eq(fa, fb)) {	429	if (isFloat32eq(fa, fb)) {
406	return 0;	430	return 0;
407	};	431	};
408		432
409	if (isFloat32lt(fa, fb)) {	433	if (isFloat32lt(fa, fb)) {
410	return -1;	434	return -1;
411	};	435	};
412		436
413	return 1;	437	return 1;
414	}	438	}
415		439
416	/** Return positive value, if a>b and neither is NaN*/	440	/** Return positive value, if a>b and neither is NaN*/
417	int __gtsf2(float a, float b)	441	int __gtsf2(float a, float b)
418	{	442	{
419	float32 fa, fb;	443	float32 fa, fb;
420	fa.f = a;	444	fa.f = a;
421	fb.f = b;	445	fb.f = b;
422	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {	446	if ( (isFloat32NaN(fa)) \|\| (isFloat32NaN(fb)) ) {
423	/* TODO: sigNaNs*/	447	/* TODO: sigNaNs*/
424	return -1;	448	return -1;
425	};	449	};
426	if (isFloat32gt(fa, fb)) {	450	if (isFloat32gt(fa, fb)) {
427	return 1;	451	return 1;
428	};	452	};
429	return 0;	453	return 0;
430	}	454	}
431		455
432	/* Other functions */	456	/* Other functions */
433		457
434	float __powisf2(float a, int b)	458	float __powisf2(float a, int b)
435	{	459	{
436	/* TODO: */	460	/* TODO: */
437	}	461	}
438		462
439	float __mulsc3(float a, float b, float c, float d)	463	float __mulsc3(float a, float b, float c, float d)
440	{	464	{
441	/* TODO: */	465	/* TODO: */
442	}	466	}
443		467
444	float __divsc3(float a, float b, float c, float d)	468	float __divsc3(float a, float b, float c, float d)
445	{	469	{
446	/* TODO: */	470	/* TODO: */
447	}	471	}
448		472
449		473

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(root)/uspace/trunk/softfloat/generic/softfloat.c – Rev 865 → 874