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