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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 | /** @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 |