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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) |
59 | double __adddf3(double a, double b) |
60 | { |
60 | { |
61 | float64 da, db; |
61 | float64 da, db; |
62 | da.d = a; |
62 | da.d = a; |
63 | db.d = b; |
63 | db.d = b; |
64 | if (da.parts.sign != db.parts.sign) { |
64 | if (da.parts.sign != db.parts.sign) { |
65 | if (da.parts.sign) { |
65 | if (da.parts.sign) { |
66 | da.parts.sign = 0; |
66 | da.parts.sign = 0; |
67 | return subFloat64(db, da).d; |
67 | return subFloat64(db, da).d; |
68 | }; |
68 | }; |
69 | db.parts.sign = 0; |
69 | db.parts.sign = 0; |
70 | return subFloat64(da, db).d; |
70 | return subFloat64(da, db).d; |
71 | } |
71 | } |
72 | return addFloat64(da, db).d; |
72 | return addFloat64(da, db).d; |
73 | } |
73 | } |
74 | 74 | ||
75 | float __subsf3(float a, float b) |
75 | float __subsf3(float a, float b) |
76 | { |
76 | { |
77 | float32 fa, fb; |
77 | float32 fa, fb; |
78 | fa.f = a; |
78 | fa.f = a; |
79 | fb.f = b; |
79 | fb.f = b; |
80 | if (fa.parts.sign != fb.parts.sign) { |
80 | if (fa.parts.sign != fb.parts.sign) { |
81 | fb.parts.sign = !fb.parts.sign; |
81 | fb.parts.sign = !fb.parts.sign; |
82 | return addFloat32(fa, fb).f; |
82 | return addFloat32(fa, fb).f; |
83 | } |
83 | } |
84 | return subFloat32(fa, fb).f; |
84 | return subFloat32(fa, fb).f; |
85 | } |
85 | } |
86 | 86 | ||
87 | double __subdf3(double a, double b) |
87 | double __subdf3(double a, double b) |
88 | { |
88 | { |
89 | float64 da, db; |
89 | float64 da, db; |
90 | da.d = a; |
90 | da.d = a; |
91 | db.d = b; |
91 | db.d = b; |
92 | if (da.parts.sign != db.parts.sign) { |
92 | if (da.parts.sign != db.parts.sign) { |
93 | db.parts.sign = !db.parts.sign; |
93 | db.parts.sign = !db.parts.sign; |
94 | return addFloat64(da, db).d; |
94 | return addFloat64(da, db).d; |
95 | } |
95 | } |
96 | return subFloat64(da, db).d; |
96 | return subFloat64(da, db).d; |
97 | } |
97 | } |
98 | 98 | ||
99 | float __mulsf3(float a, float b) |
99 | float __mulsf3(float a, float b) |
100 | { |
100 | { |
101 | float32 fa, fb; |
101 | float32 fa, fb; |
102 | fa.f = a; |
102 | fa.f = a; |
103 | fb.f = b; |
103 | fb.f = b; |
104 | return mulFloat32(fa, fb).f; |
104 | return mulFloat32(fa, fb).f; |
105 | } |
105 | } |
106 | 106 | ||
107 | double __muldf3(double a, double b) |
107 | double __muldf3(double a, double b) |
108 | { |
108 | { |
109 | float64 da, db; |
109 | float64 da, db; |
110 | da.d = a; |
110 | da.d = a; |
111 | db.d = b; |
111 | db.d = b; |
112 | return mulFloat64(da, db).d; |
112 | return mulFloat64(da, db).d; |
113 | } |
113 | } |
114 | 114 | ||
115 | float __divsf3(float a, float b) |
115 | float __divsf3(float a, float b) |
116 | { |
116 | { |
117 | float32 fa, fb; |
117 | float32 fa, fb; |
118 | fa.f = a; |
118 | fa.f = a; |
119 | fb.f = b; |
119 | fb.f = b; |
120 | return divFloat32(fa, fb).f; |
120 | return divFloat32(fa, fb).f; |
121 | } |
121 | } |
122 | 122 | ||
- | 123 | double __divdf3(double a, double b) |
|
- | 124 | { |
|
- | 125 | float64 da, db; |
|
- | 126 | da.d = a; |
|
- | 127 | db.d = b; |
|
- | 128 | return divFloat64(da, db).d; |
|
- | 129 | } |
|
- | 130 | ||
123 | float __negsf2(float a) |
131 | float __negsf2(float a) |
124 | { |
132 | { |
125 | float32 fa; |
133 | float32 fa; |
126 | fa.f = a; |
134 | fa.f = a; |
127 | fa.parts.sign = !fa.parts.sign; |
135 | fa.parts.sign = !fa.parts.sign; |
128 | return fa.f; |
136 | return fa.f; |
129 | } |
137 | } |
130 | 138 | ||
131 | double __negdf2(double a) |
139 | double __negdf2(double a) |
132 | { |
140 | { |
133 | float64 fa; |
141 | float64 fa; |
134 | fa.d = a; |
142 | fa.d = a; |
135 | fa.parts.sign = !fa.parts.sign; |
143 | fa.parts.sign = !fa.parts.sign; |
136 | return fa.d; |
144 | return fa.d; |
137 | } |
145 | } |
138 | 146 | ||
139 | /* Conversion functions */ |
147 | /* Conversion functions */ |
140 | 148 | ||
141 | double __extendsfdf2(float a) |
149 | double __extendsfdf2(float a) |
142 | { |
150 | { |
143 | float32 fa; |
151 | float32 fa; |
144 | fa.f = a; |
152 | fa.f = a; |
145 | return convertFloat32ToFloat64(fa).d; |
153 | return convertFloat32ToFloat64(fa).d; |
146 | } |
154 | } |
147 | 155 | ||
148 | float __truncdfsf2(double a) |
156 | float __truncdfsf2(double a) |
149 | { |
157 | { |
150 | float64 da; |
158 | float64 da; |
151 | da.d = a; |
159 | da.d = a; |
152 | return convertFloat64ToFloat32(da).f; |
160 | return convertFloat64ToFloat32(da).f; |
153 | } |
161 | } |
154 | 162 | ||
155 | /* Comparison functions */ |
163 | /* Comparison functions */ |
156 | 164 | ||
157 | /* a<b .. -1 |
165 | /* a<b .. -1 |
158 | * a=b .. 0 |
166 | * a=b .. 0 |
159 | * a>b .. 1 |
167 | * a>b .. 1 |
160 | * */ |
168 | * */ |
161 | 169 | ||
162 | int __cmpsf2(float a, float b) |
170 | int __cmpsf2(float a, float b) |
163 | { |
171 | { |
164 | float32 fa, fb; |
172 | float32 fa, fb; |
165 | fa.f = a; |
173 | fa.f = a; |
166 | fb.f = b; |
174 | fb.f = b; |
167 | if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
175 | if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
168 | return 1; /* no special constant for unordered - maybe signaled? */ |
176 | return 1; /* no special constant for unordered - maybe signaled? */ |
169 | }; |
177 | }; |
170 | 178 | ||
171 | 179 | ||
172 | if (isFloat32eq(fa, fb)) { |
180 | if (isFloat32eq(fa, fb)) { |
173 | return 0; |
181 | return 0; |
174 | }; |
182 | }; |
175 | 183 | ||
176 | if (isFloat32lt(fa, fb)) { |
184 | if (isFloat32lt(fa, fb)) { |
177 | return -1; |
185 | return -1; |
178 | }; |
186 | }; |
179 | return 1; |
187 | return 1; |
180 | } |
188 | } |
181 | 189 | ||
182 | int __unordsf2(float a, float b) |
190 | int __unordsf2(float a, float b) |
183 | { |
191 | { |
184 | float32 fa, fb; |
192 | float32 fa, fb; |
185 | fa.f = a; |
193 | fa.f = a; |
186 | fb.f = b; |
194 | fb.f = b; |
187 | return ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ); |
195 | return ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ); |
188 | } |
196 | } |
189 | 197 | ||
190 | /** |
198 | /** |
191 | * @return zero, if neither argument is a NaN and are equal |
199 | * @return zero, if neither argument is a NaN and are equal |
192 | * */ |
200 | * */ |
193 | int __eqsf2(float a, float b) |
201 | int __eqsf2(float a, float b) |
194 | { |
202 | { |
195 | float32 fa, fb; |
203 | float32 fa, fb; |
196 | fa.f = a; |
204 | fa.f = a; |
197 | fb.f = b; |
205 | fb.f = b; |
198 | if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
206 | if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
199 | /* TODO: sigNaNs*/ |
207 | /* TODO: sigNaNs*/ |
200 | return 1; |
208 | return 1; |
201 | }; |
209 | }; |
202 | return isFloat32eq(fa, fb) - 1; |
210 | return isFloat32eq(fa, fb) - 1; |
203 | } |
211 | } |
204 | 212 | ||
205 | /* strange behavior, but it was in gcc documentation */ |
213 | /* strange behavior, but it was in gcc documentation */ |
206 | int __nesf2(float a, float b) |
214 | int __nesf2(float a, float b) |
207 | { |
215 | { |
208 | return __eqsf2(a, b); |
216 | return __eqsf2(a, b); |
209 | } |
217 | } |
210 | 218 | ||
211 | /* return value >= 0 if a>=b and neither is NaN */ |
219 | /* return value >= 0 if a>=b and neither is NaN */ |
212 | int __gesf2(float a, float b) |
220 | int __gesf2(float a, float b) |
213 | { |
221 | { |
214 | float32 fa, fb; |
222 | float32 fa, fb; |
215 | fa.f = a; |
223 | fa.f = a; |
216 | fb.f = b; |
224 | fb.f = b; |
217 | if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
225 | if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
218 | /* TODO: sigNaNs*/ |
226 | /* TODO: sigNaNs*/ |
219 | return -1; |
227 | return -1; |
220 | }; |
228 | }; |
221 | 229 | ||
222 | if (isFloat32eq(fa, fb)) { |
230 | if (isFloat32eq(fa, fb)) { |
223 | return 0; |
231 | return 0; |
224 | }; |
232 | }; |
225 | 233 | ||
226 | if (isFloat32gt(fa, fb)) { |
234 | if (isFloat32gt(fa, fb)) { |
227 | return 1; |
235 | return 1; |
228 | }; |
236 | }; |
229 | 237 | ||
230 | return -1; |
238 | return -1; |
231 | } |
239 | } |
232 | 240 | ||
233 | /** Return negative value, if a<b and neither is NaN*/ |
241 | /** Return negative value, if a<b and neither is NaN*/ |
234 | int __ltsf2(float a, float b) |
242 | int __ltsf2(float a, float b) |
235 | { |
243 | { |
236 | float32 fa, fb; |
244 | float32 fa, fb; |
237 | fa.f = a; |
245 | fa.f = a; |
238 | fb.f = b; |
246 | fb.f = b; |
239 | if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
247 | if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
240 | /* TODO: sigNaNs*/ |
248 | /* TODO: sigNaNs*/ |
241 | return 1; |
249 | return 1; |
242 | }; |
250 | }; |
243 | if (isFloat32lt(fa, fb)) { |
251 | if (isFloat32lt(fa, fb)) { |
244 | return -1; |
252 | return -1; |
245 | }; |
253 | }; |
246 | return 0; |
254 | return 0; |
247 | } |
255 | } |
248 | 256 | ||
249 | /* return value <= 0 if a<=b and neither is NaN */ |
257 | /* return value <= 0 if a<=b and neither is NaN */ |
250 | int __lesf2(float a, float b) |
258 | int __lesf2(float a, float b) |
251 | { |
259 | { |
252 | float32 fa, fb; |
260 | float32 fa, fb; |
253 | fa.f = a; |
261 | fa.f = a; |
254 | fb.f = b; |
262 | fb.f = b; |
255 | if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
263 | if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
256 | /* TODO: sigNaNs*/ |
264 | /* TODO: sigNaNs*/ |
257 | return 1; |
265 | return 1; |
258 | }; |
266 | }; |
259 | 267 | ||
260 | if (isFloat32eq(fa, fb)) { |
268 | if (isFloat32eq(fa, fb)) { |
261 | return 0; |
269 | return 0; |
262 | }; |
270 | }; |
263 | 271 | ||
264 | if (isFloat32lt(fa, fb)) { |
272 | if (isFloat32lt(fa, fb)) { |
265 | return -1; |
273 | return -1; |
266 | }; |
274 | }; |
267 | 275 | ||
268 | return 1; |
276 | return 1; |
269 | } |
277 | } |
270 | 278 | ||
271 | /** Return positive value, if a>b and neither is NaN*/ |
279 | /** Return positive value, if a>b and neither is NaN*/ |
272 | int __gtsf2(float a, float b) |
280 | int __gtsf2(float a, float b) |
273 | { |
281 | { |
274 | float32 fa, fb; |
282 | float32 fa, fb; |
275 | fa.f = a; |
283 | fa.f = a; |
276 | fb.f = b; |
284 | fb.f = b; |
277 | if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
285 | if ( (isFloat32NaN(fa)) || (isFloat32NaN(fb)) ) { |
278 | /* TODO: sigNaNs*/ |
286 | /* TODO: sigNaNs*/ |
279 | return -1; |
287 | return -1; |
280 | }; |
288 | }; |
281 | if (isFloat32gt(fa, fb)) { |
289 | if (isFloat32gt(fa, fb)) { |
282 | return 1; |
290 | return 1; |
283 | }; |
291 | }; |
284 | return 0; |
292 | return 0; |
285 | } |
293 | } |
286 | 294 | ||
287 | /* Other functions */ |
295 | /* Other functions */ |
288 | 296 | ||
289 | float __powisf2(float a, int b) |
297 | float __powisf2(float a, int b) |
290 | { |
298 | { |
291 | /* TODO: */ |
299 | /* TODO: */ |
292 | } |
300 | } |
293 | 301 | ||
294 | float __mulsc3(float a, float b, float c, float d) |
302 | float __mulsc3(float a, float b, float c, float d) |
295 | { |
303 | { |
296 | /* TODO: */ |
304 | /* TODO: */ |
297 | } |
305 | } |
298 | 306 | ||
299 | float __divsc3(float a, float b, float c, float d) |
307 | float __divsc3(float a, float b, float c, float d) |
300 | { |
308 | { |
301 | /* TODO: */ |
309 | /* TODO: */ |
302 | } |
310 | } |
303 | 311 | ||
304 | 312 |