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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 | ||
- | 32 | #include<add.h> |
|
- | 33 | #include<sub.h> |
|
- | 34 | #include<mul.h> |
|
31 | #include<arithmetic.h> |
35 | #include<div.h> |
- | 36 | ||
32 | #include<conversion.h> |
37 | #include<conversion.h> |
33 | #include<comparison.h> |
38 | #include<comparison.h> |
34 | #include<other.h> |
39 | #include<other.h> |
35 | 40 | ||
36 | /* Arithmetic functions */ |
41 | /* Arithmetic functions */ |
37 | 42 | ||
38 | float __addsf3(float a, float b) |
43 | float __addsf3(float a, float b) |
39 | { |
44 | { |
40 | float32 fa, fb; |
45 | float32 fa, fb; |
41 | fa.f=a; |
46 | fa.f=a; |
42 | fb.f=b; |
47 | fb.f=b; |
43 | if (fa.parts.sign!=fb.parts.sign) { |
48 | if (fa.parts.sign!=fb.parts.sign) { |
44 | if (fa.parts.sign) { |
49 | if (fa.parts.sign) { |
45 | fa.parts.sign=0; |
50 | fa.parts.sign=0; |
46 | return subFloat32(fb,fa).f; |
51 | return subFloat32(fb,fa).f; |
47 | }; |
52 | }; |
48 | fb.parts.sign=0; |
53 | fb.parts.sign=0; |
49 | return subFloat32(fa,fb).f; |
54 | return subFloat32(fa,fb).f; |
50 | } |
55 | } |
51 | return addFloat32(fa,fb).f; |
56 | return addFloat32(fa,fb).f; |
52 | } |
57 | } |
53 | 58 | ||
54 | float __subsf3(float a, float b) |
59 | float __subsf3(float a, float b) |
55 | { |
60 | { |
56 | float32 fa, fb; |
61 | float32 fa, fb; |
57 | fa.f=a; |
62 | fa.f=a; |
58 | fb.f=b; |
63 | fb.f=b; |
59 | if (fa.parts.sign!=fb.parts.sign) { |
64 | if (fa.parts.sign!=fb.parts.sign) { |
60 | fb.parts.sign=!fb.parts.sign; |
65 | fb.parts.sign=!fb.parts.sign; |
61 | return addFloat32(fa,fb).f; |
66 | return addFloat32(fa,fb).f; |
62 | } |
67 | } |
63 | return subFloat32(fa,fb).f; |
68 | return subFloat32(fa,fb).f; |
64 | } |
69 | } |
65 | 70 | ||
66 | float __mulsf3(float a, float b) |
71 | float __mulsf3(float a, float b) |
67 | { |
72 | { |
68 | float32 fa, fb; |
73 | float32 fa, fb; |
69 | fa.f=a; |
74 | fa.f=a; |
70 | fb.f=b; |
75 | fb.f=b; |
71 | return mulFloat32(fa, fb).f; |
76 | return mulFloat32(fa, fb).f; |
72 | } |
77 | } |
73 | 78 | ||
74 | float __divsf3(float a, float b) |
79 | float __divsf3(float a, float b) |
75 | { |
80 | { |
76 | float32 fa, fb; |
81 | float32 fa, fb; |
77 | fa.f=a; |
82 | fa.f=a; |
78 | fb.f=b; |
83 | fb.f=b; |
79 | // return divFloat32(fa, fb).f; |
84 | //return divFloat32(fa, fb).f; |
80 | } |
85 | } |
81 | 86 | ||
82 | float __negsf2(float a) |
87 | float __negsf2(float a) |
83 | { |
88 | { |
84 | float32 fa; |
89 | float32 fa; |
85 | fa.f=a; |
90 | fa.f=a; |
86 | fa.parts.sign=!fa.parts.sign; |
91 | fa.parts.sign=!fa.parts.sign; |
87 | return fa.f; |
92 | return fa.f; |
88 | } |
93 | } |
89 | 94 | ||
90 | double __negdf2(double a) |
95 | double __negdf2(double a) |
91 | { |
96 | { |
92 | float64 fa; |
97 | float64 fa; |
93 | fa.d=a; |
98 | fa.d=a; |
94 | fa.parts.sign=!fa.parts.sign; |
99 | fa.parts.sign=!fa.parts.sign; |
95 | return fa.d; |
100 | return fa.d; |
96 | } |
101 | } |
97 | 102 | ||
98 | /* Conversion functions */ |
103 | /* Conversion functions */ |
99 | 104 | ||
100 | double __extendsfdf2(float a) |
105 | double __extendsfdf2(float a) |
101 | { |
106 | { |
102 | float32 fa; |
107 | float32 fa; |
103 | fa.f = a; |
108 | fa.f = a; |
104 | return convertFloat32ToFloat64(fa).d; |
109 | return convertFloat32ToFloat64(fa).d; |
105 | } |
110 | } |
106 | 111 | ||
107 | float __truncdfsf2(double a) |
112 | float __truncdfsf2(double a) |
108 | { |
113 | { |
109 | float64 da; |
114 | float64 da; |
110 | da.d = a; |
115 | da.d = a; |
111 | return convertFloat64ToFloat32(da).f; |
116 | return convertFloat64ToFloat32(da).f; |
112 | } |
117 | } |
113 | 118 | ||
114 | /* Comparison functions */ |
119 | /* Comparison functions */ |
115 | 120 | ||
116 | /* a<b .. -1 |
121 | /* a<b .. -1 |
117 | * a=b .. 0 |
122 | * a=b .. 0 |
118 | * a>b .. 1 |
123 | * a>b .. 1 |
119 | * */ |
124 | * */ |
120 | 125 | ||
121 | int __cmpsf2(float a, float b) |
126 | int __cmpsf2(float a, float b) |
122 | { |
127 | { |
123 | float32 fa,fb; |
128 | float32 fa,fb; |
124 | fa.f=a; |
129 | fa.f=a; |
125 | fb.f=b; |
130 | fb.f=b; |
126 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
131 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
127 | return 1; /* no special constant for unordered - maybe signaled? */ |
132 | return 1; /* no special constant for unordered - maybe signaled? */ |
128 | }; |
133 | }; |
129 | 134 | ||
130 | 135 | ||
131 | if (isFloat32eq(fa,fb)) { |
136 | if (isFloat32eq(fa,fb)) { |
132 | return 0; |
137 | return 0; |
133 | }; |
138 | }; |
134 | 139 | ||
135 | if (isFloat32lt(fa,fb)) { |
140 | if (isFloat32lt(fa,fb)) { |
136 | return -1; |
141 | return -1; |
137 | }; |
142 | }; |
138 | return 1; |
143 | return 1; |
139 | } |
144 | } |
140 | 145 | ||
141 | int __unordsf2(float a, float b) |
146 | int __unordsf2(float a, float b) |
142 | { |
147 | { |
143 | float32 fa,fb; |
148 | float32 fa,fb; |
144 | fa.f=a; |
149 | fa.f=a; |
145 | fb.f=b; |
150 | fb.f=b; |
146 | return ((isFloat32NaN(fa))||(isFloat32NaN(fb))); |
151 | return ((isFloat32NaN(fa))||(isFloat32NaN(fb))); |
147 | } |
152 | } |
148 | 153 | ||
149 | /** |
154 | /** |
150 | * @return zero, if neither argument is a NaN and are equal |
155 | * @return zero, if neither argument is a NaN and are equal |
151 | * */ |
156 | * */ |
152 | int __eqsf2(float a, float b) |
157 | int __eqsf2(float a, float b) |
153 | { |
158 | { |
154 | float32 fa,fb; |
159 | float32 fa,fb; |
155 | fa.f=a; |
160 | fa.f=a; |
156 | fb.f=b; |
161 | fb.f=b; |
157 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
162 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
158 | /* TODO: sigNaNs*/ |
163 | /* TODO: sigNaNs*/ |
159 | return 1; |
164 | return 1; |
160 | }; |
165 | }; |
161 | return isFloat32eq(fa,fb)-1; |
166 | return isFloat32eq(fa,fb)-1; |
162 | } |
167 | } |
163 | 168 | ||
164 | /* strange behavior, but it was in gcc documentation */ |
169 | /* strange behavior, but it was in gcc documentation */ |
165 | int __nesf2(float a, float b) |
170 | int __nesf2(float a, float b) |
166 | { |
171 | { |
167 | return __eqsf2(a,b); |
172 | return __eqsf2(a,b); |
168 | } |
173 | } |
169 | 174 | ||
170 | /* return value >= 0 if a>=b and neither is NaN */ |
175 | /* return value >= 0 if a>=b and neither is NaN */ |
171 | int __gesf2(float a, float b) |
176 | int __gesf2(float a, float b) |
172 | { |
177 | { |
173 | float32 fa,fb; |
178 | float32 fa,fb; |
174 | fa.f=a; |
179 | fa.f=a; |
175 | fb.f=b; |
180 | fb.f=b; |
176 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
181 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
177 | /* TODO: sigNaNs*/ |
182 | /* TODO: sigNaNs*/ |
178 | return -1; |
183 | return -1; |
179 | }; |
184 | }; |
180 | 185 | ||
181 | if (isFloat32eq(fa,fb)) { |
186 | if (isFloat32eq(fa,fb)) { |
182 | return 0; |
187 | return 0; |
183 | }; |
188 | }; |
184 | 189 | ||
185 | if (isFloat32gt(fa,fb)) { |
190 | if (isFloat32gt(fa,fb)) { |
186 | return 1; |
191 | return 1; |
187 | }; |
192 | }; |
188 | 193 | ||
189 | return -1; |
194 | return -1; |
190 | } |
195 | } |
191 | 196 | ||
192 | /** Return negative value, if a<b and neither is NaN*/ |
197 | /** Return negative value, if a<b and neither is NaN*/ |
193 | int __ltsf2(float a, float b) |
198 | int __ltsf2(float a, float b) |
194 | { |
199 | { |
195 | float32 fa,fb; |
200 | float32 fa,fb; |
196 | fa.f=a; |
201 | fa.f=a; |
197 | fb.f=b; |
202 | fb.f=b; |
198 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
203 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
199 | /* TODO: sigNaNs*/ |
204 | /* TODO: sigNaNs*/ |
200 | return 1; |
205 | return 1; |
201 | }; |
206 | }; |
202 | if (isFloat32lt(fa, fb)) { |
207 | if (isFloat32lt(fa, fb)) { |
203 | return -1; |
208 | return -1; |
204 | }; |
209 | }; |
205 | return 0; |
210 | return 0; |
206 | } |
211 | } |
207 | 212 | ||
208 | /* return value <= 0 if a<=b and neither is NaN */ |
213 | /* return value <= 0 if a<=b and neither is NaN */ |
209 | int __lesf2(float a, float b) |
214 | int __lesf2(float a, float b) |
210 | { |
215 | { |
211 | float32 fa,fb; |
216 | float32 fa,fb; |
212 | fa.f=a; |
217 | fa.f=a; |
213 | fb.f=b; |
218 | fb.f=b; |
214 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
219 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
215 | /* TODO: sigNaNs*/ |
220 | /* TODO: sigNaNs*/ |
216 | return 1; |
221 | return 1; |
217 | }; |
222 | }; |
218 | 223 | ||
219 | if (isFloat32eq(fa,fb)) { |
224 | if (isFloat32eq(fa,fb)) { |
220 | return 0; |
225 | return 0; |
221 | }; |
226 | }; |
222 | 227 | ||
223 | if (isFloat32lt(fa,fb)) { |
228 | if (isFloat32lt(fa,fb)) { |
224 | return -1; |
229 | return -1; |
225 | }; |
230 | }; |
226 | 231 | ||
227 | return 1; |
232 | return 1; |
228 | } |
233 | } |
229 | 234 | ||
230 | /** Return positive value, if a>b and neither is NaN*/ |
235 | /** Return positive value, if a>b and neither is NaN*/ |
231 | int __gtsf2(float a, float b) |
236 | int __gtsf2(float a, float b) |
232 | { |
237 | { |
233 | float32 fa,fb; |
238 | float32 fa,fb; |
234 | fa.f=a; |
239 | fa.f=a; |
235 | fb.f=b; |
240 | fb.f=b; |
236 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
241 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
237 | /* TODO: sigNaNs*/ |
242 | /* TODO: sigNaNs*/ |
238 | return -1; |
243 | return -1; |
239 | }; |
244 | }; |
240 | if (isFloat32gt(fa, fb)) { |
245 | if (isFloat32gt(fa, fb)) { |
241 | return 1; |
246 | return 1; |
242 | }; |
247 | }; |
243 | return 0; |
248 | return 0; |
244 | } |
249 | } |
245 | 250 | ||
246 | /* Other functions */ |
251 | /* Other functions */ |
247 | 252 | ||
248 | float __powisf2(float a, int b) |
253 | float __powisf2(float a, int b) |
249 | { |
254 | { |
250 | //TODO: |
255 | //TODO: |
251 | } |
256 | } |
252 | 257 | ||
253 | float __mulsc3(float a, float b, float c, float d) |
258 | float __mulsc3(float a, float b, float c, float d) |
254 | { |
259 | { |
255 | //TODO: |
260 | //TODO: |
256 | } |
261 | } |
257 | 262 | ||
258 | float __divsc3(float a, float b, float c, float d) |
263 | float __divsc3(float a, float b, float c, float d) |
259 | { |
264 | { |
260 | //TODO: |
265 | //TODO: |
261 | } |
266 | } |
262 | 267 | ||
263 | 268 |