Rev 697 | Rev 731 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 535 | cejka | 1 | /* |
| 2 | * Copyright (C) 2005 Josef Cejka |
||
| 3 | * All rights reserved. |
||
| 4 | * |
||
| 5 | * Redistribution and use in source and binary forms, with or without |
||
| 6 | * modification, are permitted provided that the following conditions |
||
| 7 | * are met: |
||
| 8 | * |
||
| 9 | * - Redistributions of source code must retain the above copyright |
||
| 10 | * notice, this list of conditions and the following disclaimer. |
||
| 11 | * - Redistributions in binary form must reproduce the above copyright |
||
| 12 | * notice, this list of conditions and the following disclaimer in the |
||
| 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 |
||
| 15 | * derived from this software without specific prior written permission. |
||
| 16 | * |
||
| 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 |
||
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 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 |
||
| 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 |
||
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 27 | */ |
||
| 28 | |||
| 29 | #include<softfloat.h> |
||
| 647 | cejka | 30 | #include<sftypes.h> |
| 31 | #include<arithmetic.h> |
||
| 32 | #include<conversion.h> |
||
| 33 | #include<comparison.h> |
||
| 34 | #include<other.h> |
||
| 535 | cejka | 35 | |
| 647 | cejka | 36 | /* Arithmetic functions */ |
| 542 | cejka | 37 | |
| 38 | float __addsf3(float a, float b) |
||
| 39 | { |
||
| 40 | float32 fa, fb; |
||
| 563 | cejka | 41 | fa.f=a; |
| 42 | fb.f=b; |
||
| 647 | cejka | 43 | if (fa.parts.sign!=fb.parts.sign) { |
| 44 | if (fa.parts.sign) { |
||
| 45 | fa.parts.sign=0; |
||
| 46 | return subFloat32(fb,fa).f; |
||
| 47 | }; |
||
| 48 | fb.parts.sign=0; |
||
| 49 | return subFloat32(fa,fb).f; |
||
| 50 | } |
||
| 563 | cejka | 51 | return addFloat32(fa,fb).f; |
| 698 | cejka | 52 | } |
| 542 | cejka | 53 | |
| 54 | float __subsf3(float a, float b) |
||
| 55 | { |
||
| 56 | float32 fa, fb; |
||
| 563 | cejka | 57 | fa.f=a; |
| 58 | fb.f=b; |
||
| 647 | cejka | 59 | if (fa.parts.sign!=fb.parts.sign) { |
| 660 | cejka | 60 | fb.parts.sign=!fb.parts.sign; |
| 647 | cejka | 61 | return addFloat32(fa,fb).f; |
| 62 | } |
||
| 563 | cejka | 63 | return subFloat32(fa,fb).f; |
| 698 | cejka | 64 | } |
| 542 | cejka | 65 | |
| 688 | cejka | 66 | float __mulsf3(float a, float b) |
| 67 | { |
||
| 68 | float32 fa, fb; |
||
| 69 | fa.f=a; |
||
| 70 | fb.f=b; |
||
| 71 | return mulFloat32(fa, fb).f; |
||
| 72 | } |
||
| 73 | |||
| 697 | cejka | 74 | float __divsf3(float a, float b) |
| 75 | { |
||
| 76 | float32 fa, fb; |
||
| 77 | fa.f=a; |
||
| 78 | fb.f=b; |
||
| 79 | // return divFloat32(fa, fb).f; |
||
| 698 | cejka | 80 | } |
| 697 | cejka | 81 | |
| 542 | cejka | 82 | float __negsf2(float a) |
| 83 | { |
||
| 84 | float32 fa; |
||
| 85 | fa.f=a; |
||
| 86 | fa.parts.sign=!fa.parts.sign; |
||
| 87 | return fa.f; |
||
| 698 | cejka | 88 | } |
| 542 | cejka | 89 | |
| 90 | double __negdf2(double a) |
||
| 91 | { |
||
| 92 | float64 fa; |
||
| 563 | cejka | 93 | fa.d=a; |
| 542 | cejka | 94 | fa.parts.sign=!fa.parts.sign; |
| 563 | cejka | 95 | return fa.d; |
| 698 | cejka | 96 | } |
| 542 | cejka | 97 | |
| 647 | cejka | 98 | /* Conversion functions */ |
| 542 | cejka | 99 | |
| 697 | cejka | 100 | double __extendsfdf2(float a) |
| 101 | { |
||
| 102 | float32 fa; |
||
| 103 | fa.f = a; |
||
| 104 | return convertFloat32ToFloat64(fa).d; |
||
| 698 | cejka | 105 | } |
| 697 | cejka | 106 | |
| 107 | float __truncdfsf2(double a) |
||
| 108 | { |
||
| 109 | float64 da; |
||
| 110 | da.d = a; |
||
| 111 | return convertFloat64ToFloat32(da).f; |
||
| 112 | } |
||
| 698 | cejka | 113 | |
| 647 | cejka | 114 | /* Comparison functions */ |
| 542 | cejka | 115 | |
| 652 | cejka | 116 | /* a<b .. -1 |
| 117 | * a=b .. 0 |
||
| 118 | * a>b .. 1 |
||
| 119 | * */ |
||
| 120 | |||
| 660 | cejka | 121 | int __cmpsf2(float a, float b) |
| 652 | cejka | 122 | { |
| 123 | float32 fa,fb; |
||
| 124 | fa.f=a; |
||
| 125 | fb.f=b; |
||
| 126 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
||
| 127 | return 1; /* no special constant for unordered - maybe signaled? */ |
||
| 128 | }; |
||
| 129 | |||
| 130 | |||
| 131 | if (isFloat32eq(fa,fb)) { |
||
| 132 | return 0; |
||
| 133 | }; |
||
| 134 | |||
| 135 | if (isFloat32lt(fa,fb)) { |
||
| 136 | return -1; |
||
| 137 | }; |
||
| 138 | return 1; |
||
| 139 | } |
||
| 140 | |||
| 141 | int __unordsf2(float a, float b) |
||
| 142 | { |
||
| 143 | float32 fa,fb; |
||
| 144 | fa.f=a; |
||
| 145 | fb.f=b; |
||
| 146 | return ((isFloat32NaN(fa))||(isFloat32NaN(fb))); |
||
| 698 | cejka | 147 | } |
| 652 | cejka | 148 | |
| 149 | /** |
||
| 150 | * @return zero, if neither argument is a NaN and are equal |
||
| 151 | * */ |
||
| 152 | int __eqsf2(float a, float b) |
||
| 153 | { |
||
| 154 | float32 fa,fb; |
||
| 155 | fa.f=a; |
||
| 156 | fb.f=b; |
||
| 157 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
||
| 158 | /* TODO: sigNaNs*/ |
||
| 159 | return 1; |
||
| 160 | }; |
||
| 161 | return isFloat32eq(fa,fb)-1; |
||
| 698 | cejka | 162 | } |
| 652 | cejka | 163 | |
| 164 | /* strange behavior, but it was in gcc documentation */ |
||
| 165 | int __nesf2(float a, float b) |
||
| 166 | { |
||
| 167 | return __eqsf2(a,b); |
||
| 698 | cejka | 168 | } |
| 653 | cejka | 169 | |
| 170 | /* return value >= 0 if a>=b and neither is NaN */ |
||
| 171 | int __gesf2(float a, float b) |
||
| 172 | { |
||
| 173 | float32 fa,fb; |
||
| 174 | fa.f=a; |
||
| 175 | fb.f=b; |
||
| 176 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
||
| 177 | /* TODO: sigNaNs*/ |
||
| 660 | cejka | 178 | return -1; |
| 653 | cejka | 179 | }; |
| 180 | |||
| 181 | if (isFloat32eq(fa,fb)) { |
||
| 182 | return 0; |
||
| 183 | }; |
||
| 184 | |||
| 185 | if (isFloat32gt(fa,fb)) { |
||
| 186 | return 1; |
||
| 187 | }; |
||
| 188 | |||
| 189 | return -1; |
||
| 190 | } |
||
| 191 | |||
| 192 | /** Return negative value, if a<b and neither is NaN*/ |
||
| 193 | int __ltsf2(float a, float b) |
||
| 194 | { |
||
| 195 | float32 fa,fb; |
||
| 196 | fa.f=a; |
||
| 197 | fb.f=b; |
||
| 198 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
||
| 199 | /* TODO: sigNaNs*/ |
||
| 200 | return 1; |
||
| 201 | }; |
||
| 202 | if (isFloat32lt(fa, fb)) { |
||
| 203 | return -1; |
||
| 204 | }; |
||
| 205 | return 0; |
||
| 206 | } |
||
| 207 | |||
| 208 | /* return value <= 0 if a<=b and neither is NaN */ |
||
| 209 | int __lesf2(float a, float b) |
||
| 210 | { |
||
| 211 | float32 fa,fb; |
||
| 212 | fa.f=a; |
||
| 213 | fb.f=b; |
||
| 214 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
||
| 215 | /* TODO: sigNaNs*/ |
||
| 216 | return 1; |
||
| 217 | }; |
||
| 218 | |||
| 219 | if (isFloat32eq(fa,fb)) { |
||
| 220 | return 0; |
||
| 221 | }; |
||
| 222 | |||
| 223 | if (isFloat32lt(fa,fb)) { |
||
| 224 | return -1; |
||
| 225 | }; |
||
| 226 | |||
| 227 | return 1; |
||
| 228 | } |
||
| 229 | |||
| 230 | /** Return positive value, if a>b and neither is NaN*/ |
||
| 660 | cejka | 231 | int __gtsf2(float a, float b) |
| 653 | cejka | 232 | { |
| 233 | float32 fa,fb; |
||
| 234 | fa.f=a; |
||
| 235 | fb.f=b; |
||
| 236 | if ((isFloat32NaN(fa))||(isFloat32NaN(fb))) { |
||
| 237 | /* TODO: sigNaNs*/ |
||
| 660 | cejka | 238 | return -1; |
| 653 | cejka | 239 | }; |
| 240 | if (isFloat32gt(fa, fb)) { |
||
| 241 | return 1; |
||
| 242 | }; |
||
| 243 | return 0; |
||
| 244 | } |
||
| 245 | |||
| 647 | cejka | 246 | /* Other functions */ |
| 542 | cejka | 247 | |
| 698 | cejka | 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 |