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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 | /* Arithmetic functions */ |
41 | /* Arithmetic functions */ |
42 | 42 | ||
43 | float __addsf3(float a, float b) |
43 | float __addsf3(float a, float b) |
44 | { |
44 | { |
45 | float32 fa, fb; |
45 | float32 fa, fb; |
46 | fa.f=a; |
46 | fa.f=a; |
47 | fb.f=b; |
47 | fb.f=b; |
48 | if (fa.parts.sign!=fb.parts.sign) { |
48 | if (fa.parts.sign!=fb.parts.sign) { |
49 | if (fa.parts.sign) { |
49 | if (fa.parts.sign) { |
50 | fa.parts.sign=0; |
50 | fa.parts.sign=0; |
51 | return subFloat32(fb,fa).f; |
51 | return subFloat32(fb,fa).f; |
52 | }; |
52 | }; |
53 | fb.parts.sign=0; |
53 | fb.parts.sign=0; |
54 | return subFloat32(fa,fb).f; |
54 | return subFloat32(fa,fb).f; |
55 | } |
55 | } |
56 | return addFloat32(fa,fb).f; |
56 | return addFloat32(fa,fb).f; |
57 | } |
57 | } |
58 | 58 | ||
- | 59 | double __adddf3(double a, double b) |
|
- | 60 | { |
|
- | 61 | float64 da, db; |
|
- | 62 | da.d=a; |
|
- | 63 | db.d=b; |
|
- | 64 | if (da.parts.sign!=db.parts.sign) { |
|
- | 65 | if (da.parts.sign) { |
|
- | 66 | da.parts.sign=0; |
|
- | 67 | return subFloat64(db,da).d; |
|
- | 68 | }; |
|
- | 69 | db.parts.sign=0; |
|
- | 70 | return subFloat64(da,db).d; |
|
- | 71 | } |
|
- | 72 | return addFloat64(da,db).d; |
|
- | 73 | } |
|
- | 74 | ||
59 | float __subsf3(float a, float b) |
75 | float __subsf3(float a, float b) |
60 | { |
76 | { |
61 | float32 fa, fb; |
77 | float32 fa, fb; |
62 | fa.f=a; |
78 | fa.f=a; |
63 | fb.f=b; |
79 | fb.f=b; |
64 | if (fa.parts.sign!=fb.parts.sign) { |
80 | if (fa.parts.sign!=fb.parts.sign) { |
65 | fb.parts.sign=!fb.parts.sign; |
81 | fb.parts.sign=!fb.parts.sign; |
66 | return addFloat32(fa,fb).f; |
82 | return addFloat32(fa,fb).f; |
67 | } |
83 | } |
68 | return subFloat32(fa,fb).f; |
84 | return subFloat32(fa,fb).f; |
69 | } |
85 | } |
- | 86 | ||
- | 87 | double __subdf3(double a, double b) |
|
- | 88 | { |
|
- | 89 | float64 da, db; |
|
- | 90 | da.d = a; |
|
- | 91 | db.d = b; |
|
- | 92 | if (da.parts.sign != db.parts.sign) { |
|
- | 93 | db.parts.sign = !db.parts.sign; |
|
- | 94 | return addFloat64(da, db).d; |
|
- | 95 | } |
|
- | 96 | return subFloat64(da, db).d; |
|
- | 97 | } |
|
70 | 98 | ||
71 | float __mulsf3(float a, float b) |
99 | float __mulsf3(float a, float b) |
72 | { |
100 | { |
73 | float32 fa, fb; |
101 | float32 fa, fb; |
74 | fa.f=a; |
102 | fa.f=a; |
75 | fb.f=b; |
103 | fb.f=b; |
76 | return mulFloat32(fa, fb).f; |
104 | return mulFloat32(fa, fb).f; |
77 | } |
105 | } |
78 | 106 | ||
79 | float __divsf3(float a, float b) |
107 | float __divsf3(float a, float b) |
80 | { |
108 | { |
81 | float32 fa, fb; |
109 | float32 fa, fb; |
82 | fa.f=a; |
110 | fa.f=a; |
83 | fb.f=b; |
111 | fb.f=b; |
84 | //return divFloat32(fa, fb).f; |
112 | //return divFloat32(fa, fb).f; |
85 | } |
113 | } |
86 | 114 | ||
87 | float __negsf2(float a) |
115 | float __negsf2(float a) |
88 | { |
116 | { |
89 | float32 fa; |
117 | float32 fa; |
90 | fa.f=a; |
118 | fa.f=a; |
91 | fa.parts.sign=!fa.parts.sign; |
119 | fa.parts.sign=!fa.parts.sign; |
92 | return fa.f; |
120 | return fa.f; |
93 | } |
121 | } |
94 | 122 | ||
95 | double __negdf2(double a) |
123 | double __negdf2(double a) |
96 | { |
124 | { |
97 | float64 fa; |
125 | float64 fa; |
98 | fa.d=a; |
126 | fa.d=a; |
99 | fa.parts.sign=!fa.parts.sign; |
127 | fa.parts.sign=!fa.parts.sign; |
100 | return fa.d; |
128 | return fa.d; |
101 | } |
129 | } |
102 | 130 | ||
103 | /* Conversion functions */ |
131 | /* Conversion functions */ |
104 | 132 | ||
105 | double __extendsfdf2(float a) |
133 | double __extendsfdf2(float a) |
106 | { |
134 | { |
107 | float32 fa; |
135 | float32 fa; |
108 | fa.f = a; |
136 | fa.f = a; |
109 | return convertFloat32ToFloat64(fa).d; |
137 | return convertFloat32ToFloat64(fa).d; |
110 | } |
138 | } |
111 | 139 | ||
112 | float __truncdfsf2(double a) |
140 | float __truncdfsf2(double a) |
113 | { |
141 | { |
114 | float64 da; |
142 | float64 da; |
115 | da.d = a; |
143 | da.d = a; |
116 | return convertFloat64ToFloat32(da).f; |
144 | return convertFloat64ToFloat32(da).f; |
117 | } |
145 | } |
118 | 146 | ||
119 | /* Comparison functions */ |
147 | /* Comparison functions */ |
120 | 148 | ||
121 | /* a<b .. -1 |
149 | /* a<b .. -1 |
122 | * a=b .. 0 |
150 | * a=b .. 0 |
123 | * a>b .. 1 |
151 | * a>b .. 1 |
124 | * */ |
152 | * */ |
125 | 153 | ||
126 | int __cmpsf2(float a, float b) |
154 | int __cmpsf2(float a, float b) |
127 | { |
155 | { |
128 | float32 fa,fb; |
156 | float32 fa,fb; |
129 | fa.f=a; |
157 | fa.f=a; |
130 | fb.f=b; |
158 | fb.f=b; |
131 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
159 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
132 | return 1; /* no special constant for unordered - maybe signaled? */ |
160 | return 1; /* no special constant for unordered - maybe signaled? */ |
133 | }; |
161 | }; |
134 | 162 | ||
135 | 163 | ||
136 | if (isFloat32eq(fa,fb)) { |
164 | if (isFloat32eq(fa,fb)) { |
137 | return 0; |
165 | return 0; |
138 | }; |
166 | }; |
139 | 167 | ||
140 | if (isFloat32lt(fa,fb)) { |
168 | if (isFloat32lt(fa,fb)) { |
141 | return -1; |
169 | return -1; |
142 | }; |
170 | }; |
143 | return 1; |
171 | return 1; |
144 | } |
172 | } |
145 | 173 | ||
146 | int __unordsf2(float a, float b) |
174 | int __unordsf2(float a, float b) |
147 | { |
175 | { |
148 | float32 fa,fb; |
176 | float32 fa,fb; |
149 | fa.f=a; |
177 | fa.f=a; |
150 | fb.f=b; |
178 | fb.f=b; |
151 | return ((isFloat32NaN(fa))||(isFloat32NaN(fb))); |
179 | return ((isFloat32NaN(fa))||(isFloat32NaN(fb))); |
152 | } |
180 | } |
153 | 181 | ||
154 | /** |
182 | /** |
155 | * @return zero, if neither argument is a NaN and are equal |
183 | * @return zero, if neither argument is a NaN and are equal |
156 | * */ |
184 | * */ |
157 | int __eqsf2(float a, float b) |
185 | int __eqsf2(float a, float b) |
158 | { |
186 | { |
159 | float32 fa,fb; |
187 | float32 fa,fb; |
160 | fa.f=a; |
188 | fa.f=a; |
161 | fb.f=b; |
189 | fb.f=b; |
162 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
190 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
163 | /* TODO: sigNaNs*/ |
191 | /* TODO: sigNaNs*/ |
164 | return 1; |
192 | return 1; |
165 | }; |
193 | }; |
166 | return isFloat32eq(fa,fb)-1; |
194 | return isFloat32eq(fa,fb)-1; |
167 | } |
195 | } |
168 | 196 | ||
169 | /* strange behavior, but it was in gcc documentation */ |
197 | /* strange behavior, but it was in gcc documentation */ |
170 | int __nesf2(float a, float b) |
198 | int __nesf2(float a, float b) |
171 | { |
199 | { |
172 | return __eqsf2(a,b); |
200 | return __eqsf2(a,b); |
173 | } |
201 | } |
174 | 202 | ||
175 | /* return value >= 0 if a>=b and neither is NaN */ |
203 | /* return value >= 0 if a>=b and neither is NaN */ |
176 | int __gesf2(float a, float b) |
204 | int __gesf2(float a, float b) |
177 | { |
205 | { |
178 | float32 fa,fb; |
206 | float32 fa,fb; |
179 | fa.f=a; |
207 | fa.f=a; |
180 | fb.f=b; |
208 | fb.f=b; |
181 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
209 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
182 | /* TODO: sigNaNs*/ |
210 | /* TODO: sigNaNs*/ |
183 | return -1; |
211 | return -1; |
184 | }; |
212 | }; |
185 | 213 | ||
186 | if (isFloat32eq(fa,fb)) { |
214 | if (isFloat32eq(fa,fb)) { |
187 | return 0; |
215 | return 0; |
188 | }; |
216 | }; |
189 | 217 | ||
190 | if (isFloat32gt(fa,fb)) { |
218 | if (isFloat32gt(fa,fb)) { |
191 | return 1; |
219 | return 1; |
192 | }; |
220 | }; |
193 | 221 | ||
194 | return -1; |
222 | return -1; |
195 | } |
223 | } |
196 | 224 | ||
197 | /** Return negative value, if a<b and neither is NaN*/ |
225 | /** Return negative value, if a<b and neither is NaN*/ |
198 | int __ltsf2(float a, float b) |
226 | int __ltsf2(float a, float b) |
199 | { |
227 | { |
200 | float32 fa,fb; |
228 | float32 fa,fb; |
201 | fa.f=a; |
229 | fa.f=a; |
202 | fb.f=b; |
230 | fb.f=b; |
203 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
231 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
204 | /* TODO: sigNaNs*/ |
232 | /* TODO: sigNaNs*/ |
205 | return 1; |
233 | return 1; |
206 | }; |
234 | }; |
207 | if (isFloat32lt(fa, fb)) { |
235 | if (isFloat32lt(fa, fb)) { |
208 | return -1; |
236 | return -1; |
209 | }; |
237 | }; |
210 | return 0; |
238 | return 0; |
211 | } |
239 | } |
212 | 240 | ||
213 | /* return value <= 0 if a<=b and neither is NaN */ |
241 | /* return value <= 0 if a<=b and neither is NaN */ |
214 | int __lesf2(float a, float b) |
242 | int __lesf2(float a, float b) |
215 | { |
243 | { |
216 | float32 fa,fb; |
244 | float32 fa,fb; |
217 | fa.f=a; |
245 | fa.f=a; |
218 | fb.f=b; |
246 | fb.f=b; |
219 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
247 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
220 | /* TODO: sigNaNs*/ |
248 | /* TODO: sigNaNs*/ |
221 | return 1; |
249 | return 1; |
222 | }; |
250 | }; |
223 | 251 | ||
224 | if (isFloat32eq(fa,fb)) { |
252 | if (isFloat32eq(fa,fb)) { |
225 | return 0; |
253 | return 0; |
226 | }; |
254 | }; |
227 | 255 | ||
228 | if (isFloat32lt(fa,fb)) { |
256 | if (isFloat32lt(fa,fb)) { |
229 | return -1; |
257 | return -1; |
230 | }; |
258 | }; |
231 | 259 | ||
232 | return 1; |
260 | return 1; |
233 | } |
261 | } |
234 | 262 | ||
235 | /** Return positive value, if a>b and neither is NaN*/ |
263 | /** Return positive value, if a>b and neither is NaN*/ |
236 | int __gtsf2(float a, float b) |
264 | int __gtsf2(float a, float b) |
237 | { |
265 | { |
238 | float32 fa,fb; |
266 | float32 fa,fb; |
239 | fa.f=a; |
267 | fa.f=a; |
240 | fb.f=b; |
268 | fb.f=b; |
241 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
269 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
242 | /* TODO: sigNaNs*/ |
270 | /* TODO: sigNaNs*/ |
243 | return -1; |
271 | return -1; |
244 | }; |
272 | }; |
245 | if (isFloat32gt(fa, fb)) { |
273 | if (isFloat32gt(fa, fb)) { |
246 | return 1; |
274 | return 1; |
247 | }; |
275 | }; |
248 | return 0; |
276 | return 0; |
249 | } |
277 | } |
250 | 278 | ||
251 | /* Other functions */ |
279 | /* Other functions */ |
252 | 280 | ||
253 | float __powisf2(float a, int b) |
281 | float __powisf2(float a, int b) |
254 | { |
282 | { |
255 | //TODO: |
283 | //TODO: |
256 | } |
284 | } |
257 | 285 | ||
258 | float __mulsc3(float a, float b, float c, float d) |
286 | float __mulsc3(float a, float b, float c, float d) |
259 | { |
287 | { |
260 | //TODO: |
288 | //TODO: |
261 | } |
289 | } |
262 | 290 | ||
263 | float __divsc3(float a, float b, float c, float d) |
291 | float __divsc3(float a, float b, float c, float d) |
264 | { |
292 | { |
265 | //TODO: |
293 | //TODO: |
266 | } |
294 | } |
267 | 295 | ||
268 | 296 |