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This is the notice of license and warranty for ASCEND IV. |
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The authors of ASCEND will consider other licensing arrangements |
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on a case-by-case basis. This license applies to all ASCEND |
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interface, compiler, and solver programs, but not to third |
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party software subsystems (Tcl/Tk/solving codes) that we |
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may call. |
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|
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GNU GENERAL PUBLIC LICENSE |
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Version 2, June 1991 |
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|
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Copyright (C) 1989, 1991 |
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Free Software Foundation, Inc. |
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675 Mass Ave, Cambridge, MA 02139, USA |
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|
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Everyone is permitted to copy and distribute verbatim |
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copies of this license document, but changing it is not |
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allowed. |
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|
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Preamble |
| 20 |
|
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The licenses for most software are designed to take away |
| 22 |
your freedom to share and change it. By contrast, the GNU |
| 23 |
General Public License is intended to guarantee your |
| 24 |
freedom to share and change free software--to make sure the |
| 25 |
software is free for all its users. This General Public |
| 26 |
License applies to most of the Free Software Foundation's |
| 27 |
software and to any other program whose authors commit to |
| 28 |
using it. (Some other Free Software Foundation software is |
| 29 |
covered by the GNU Library General Public License |
| 30 |
instead.) You can apply it to your programs, too. |
| 31 |
|
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When we speak of free software, we are referring to |
| 33 |
freedom, not price. Our General Public Licenses are |
| 34 |
designed to make sure that you have the freedom to |
| 35 |
distribute copies of free software (and charge for this |
| 36 |
service if you wish), that you receive source code or can |
| 37 |
get it if you want it, that you can change the software or |
| 38 |
use pieces of it in new free programs; and that you know |
| 39 |
you can do these things. |
| 40 |
|
| 41 |
To protect your rights, we need to make restrictions that |
| 42 |
forbid anyone to deny you these rights or to ask you to |
| 43 |
surrender the rights. These restrictions translate to |
| 44 |
certain responsibilities for you if you distribute copies |
| 45 |
of the software, or if you modify it. |
| 46 |
|
| 47 |
For example, if you distribute copies of such a program, |
| 48 |
whether gratis or for a fee, you must give the recipients |
| 49 |
all the rights that you have. You must make sure that |
| 50 |
they, too, receive or can get the source code. And you |
| 51 |
must show them these terms so they know their rights. |
| 52 |
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We protect your rights with two steps: (1) copyright the |
| 54 |
software, and (2) offer you this license which gives you |
| 55 |
legal permission to copy, distribute and/or modify the |
| 56 |
software. |
| 57 |
|
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Also, for each author's protection and ours, we want to |
| 59 |
make certain that everyone understands that there is no |
| 60 |
warranty for this free software. If the software is |
| 61 |
modified by someone else and passed on, we want its |
| 62 |
recipients to know that what they have is not the original, |
| 63 |
so that any problems introduced by others will not reflect |
| 64 |
on the original authors' reputations. |
| 65 |
|
| 66 |
Finally, any free program is threatened constantly by |
| 67 |
software patents. We wish to avoid the danger that |
| 68 |
redistributors of a free program will individually obtain |
| 69 |
patent licenses, in effect making the program proprietary. |
| 70 |
To prevent this, we have made it clear that any patent must |
| 71 |
be licensed for everyone's free use or not licensed at |
| 72 |
all. |
| 73 |
|
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The precise terms and conditions for copying, distribution |
| 75 |
and modification follow. |
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|
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GNU GENERAL PUBLIC LICENSE |
| 78 |
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND |
| 79 |
MODIFICATION |
| 80 |
|
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0. This License applies to any program or other work |
| 82 |
which contains a notice placed by the copyright holder |
| 83 |
saying it may be distributed under the terms of this |
| 84 |
General Public License. The "Program", below, refers to |
| 85 |
any such program or work, and a "work based on the Program" |
| 86 |
means either the Program or any derivative work under |
| 87 |
copyright law: that is to say, a work containing the |
| 88 |
Program or a portion of it, either verbatim or with |
| 89 |
modifications and/or translated into another language. |
| 90 |
(Hereinafter, translation is included without limitation in |
| 91 |
the term "modification".) Each licensee is addressed as |
| 92 |
"you". |
| 93 |
|
| 94 |
Activities other than copying, distribution and |
| 95 |
modification are not covered by this License; they are |
| 96 |
outside its scope. The act of running the Program is not |
| 97 |
restricted, and the output from the Program is covered only |
| 98 |
if its contents constitute a work based on the Program |
| 99 |
(independent of having been made by running the Program). |
| 100 |
Whether that is true depends on what the Program does. |
| 101 |
|
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1. You may copy and distribute verbatim copies of the |
| 103 |
Program's source code as you receive it, in any medium, |
| 104 |
provided that you conspicuously and appropriately publish |
| 105 |
on each copy an appropriate copyright notice and disclaimer |
| 106 |
of warranty; keep intact all the notices that refer to this |
| 107 |
License and to the absence of any warranty; and give any |
| 108 |
other recipients of the Program a copy of this License |
| 109 |
along with the Program. |
| 110 |
|
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You may charge a fee for the physical act of transferring a |
| 112 |
copy, and you may at your option offer warranty protection |
| 113 |
in exchange for a fee. |
| 114 |
|
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2. You may modify your copy or copies of the Program or |
| 116 |
any portion of it, thus forming a work based on the |
| 117 |
Program, and copy and distribute such modifications or work |
| 118 |
under the terms of Section 1 above, provided that you also |
| 119 |
meet all of these conditions: |
| 120 |
|
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a) You must cause the modified files to carry prominent |
| 122 |
notices stating that you changed the files and the date |
| 123 |
of any change. |
| 124 |
|
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b) You must cause any work that you distribute or |
| 126 |
publish, that in whole or in part contains or is |
| 127 |
derived from the Program or any part thereof, to be |
| 128 |
licensed as a whole at no charge to all third parties |
| 129 |
under the terms of this License. |
| 130 |
|
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c) If the modified program normally reads commands |
| 132 |
interactively when run, you must cause it, when started |
| 133 |
running for such interactive use in the most ordinary |
| 134 |
way, to print or display an announcement including an |
| 135 |
appropriate copyright notice and a notice that there is |
| 136 |
no warranty (or else, saying that you provide a |
| 137 |
warranty) and that users may redistribute the program |
| 138 |
under these conditions, and telling the user how to |
| 139 |
view a copy of this License. (Exception: if the |
| 140 |
Program itself is interactive but does not normally |
| 141 |
print such an announcement, your work based on the |
| 142 |
Program is not required to print an announcement.) |
| 143 |
|
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These requirements apply to the modified work as a whole. |
| 145 |
If identifiable sections of that work are not derived from |
| 146 |
the Program, and can be reasonably considered independent |
| 147 |
and separate works in themselves, then this License, and |
| 148 |
its terms, do not apply to those sections when you |
| 149 |
distribute them as separate works. But when you distribute |
| 150 |
the same sections as part of a whole which is a work based |
| 151 |
on the Program, the distribution of the whole must be on |
| 152 |
the terms of this License, whose permissions for other |
| 153 |
licensees extend to the entire whole, and thus to each and |
| 154 |
every part regardless of who wrote it. |
| 155 |
|
| 156 |
Thus, it is not the intent of this section to claim rights |
| 157 |
or contest your rights to work written entirely by you; |
| 158 |
rather, the intent is to exercise the right to control the |
| 159 |
distribution of derivative or collective works based on the |
| 160 |
Program. |
| 161 |
|
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In addition, mere aggregation of another work not based on |
| 163 |
the Program with the Program (or with a work based on the |
| 164 |
Program) on a volume of a storage or distribution medium |
| 165 |
does not bring the other work under the scope of this |
| 166 |
License. |
| 167 |
|
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3. You may copy and distribute the Program (or a work |
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based on it, under Section 2) in object code or executable |
| 170 |
form under the terms of Sections 1 and 2 above provided |
| 171 |
that you also do one of the following: |
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|
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a) Accompany it with the complete corresponding |
| 174 |
machine-readable source code, which must be distributed |
| 175 |
under the terms of Sections 1 and 2 above on a medium |
| 176 |
customarily used for software interchange; or, |
| 177 |
|
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b) Accompany it with a written offer, valid for at |
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least three years, to give any third party, for a |
| 180 |
charge no more than your cost of physically performing |
| 181 |
source distribution, a complete machine-readable copy |
| 182 |
of the corresponding source code, to be distributed |
| 183 |
under the terms of Sections 1 and 2 above on a medium |
| 184 |
customarily used for software interchange; or, |
| 185 |
|
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c) Accompany it with the information you received as to |
| 187 |
the offer to distribute corresponding source code. |
| 188 |
(This alternative is allowed only for noncommercial |
| 189 |
distribution and only if you received the program in |
| 190 |
object code or executable form with such an offer, in |
| 191 |
accord with Subsection b above.) |
| 192 |
|
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The source code for a work means the preferred form of the |
| 194 |
work for making modifications to it. For an executable |
| 195 |
work, complete source code means all the source code for |
| 196 |
all modules it contains, plus any associated interface |
| 197 |
definition files, plus the scripts used to control |
| 198 |
compilation and installation of the executable. However, |
| 199 |
as a special exception, the source code distributed need |
| 200 |
not include anything that is normally distributed (in |
| 201 |
either source or binary form) with the major components |
| 202 |
(compiler, kernel, and so on) of the operating system on |
| 203 |
which the executable runs, unless that component itself |
| 204 |
accompanies the executable. |
| 205 |
|
| 206 |
If distribution of executable or object code is made by |
| 207 |
offering access to copy from a designated place, then |
| 208 |
offering equivalent access to copy the source code from the |
| 209 |
same place counts as distribution of the source code, even |
| 210 |
though third parties are not compelled to copy the source |
| 211 |
along with the object code. |
| 212 |
|
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4. You may not copy, modify, sublicense, or distribute |
| 214 |
the Program except as expressly provided under this |
| 215 |
License. Any attempt otherwise to copy, modify, sublicense |
| 216 |
or distribute the Program is void, and will automatically |
| 217 |
terminate your rights under this License. However, parties |
| 218 |
who have received copies, or rights, from you under this |
| 219 |
License will not have their licenses terminated so long as |
| 220 |
such parties remain in full compliance. |
| 221 |
|
| 222 |
5. You are not required to accept this License, since you |
| 223 |
have not signed it. However, nothing else grants you |
| 224 |
permission to modify or distribute the Program or its |
| 225 |
derivative works. These actions are prohibited by law if |
| 226 |
you do not accept this License. Therefore, by modifying or |
| 227 |
distributing the Program (or any work based on the |
| 228 |
Program), you indicate your acceptance of this License to |
| 229 |
do so, and all its terms and conditions for copying, |
| 230 |
distributing or modifying the Program or works based on |
| 231 |
it. |
| 232 |
|
| 233 |
6. Each time you redistribute the Program (or any work |
| 234 |
based on the Program), the recipient automatically receives |
| 235 |
a license from the original licensor to copy, distribute or |
| 236 |
modify the Program subject to these terms and conditions. |
| 237 |
You may not impose any further restrictions on the |
| 238 |
recipients' exercise of the rights granted herein. You are |
| 239 |
not responsible for enforcing compliance by third parties |
| 240 |
to this License. |
| 241 |
|
| 242 |
7. If, as a consequence of a court judgment or allegation |
| 243 |
of patent infringement or for any other reason (not limited |
| 244 |
to patent issues), conditions are imposed on you (whether |
| 245 |
by court order, agreement or otherwise) that contradict the |
| 246 |
conditions of this License, they do not excuse you from the |
| 247 |
conditions of this License. If you cannot distribute so as |
| 248 |
to satisfy simultaneously your obligations under this |
| 249 |
License and any other pertinent obligations, then as a |
| 250 |
consequence you may not distribute the Program at all. For |
| 251 |
example, if a patent license would not permit royalty-free |
| 252 |
redistribution of the Program by all those who receive |
| 253 |
copies directly or indirectly through you, then the only |
| 254 |
way you could satisfy both it and this License would be to |
| 255 |
refrain entirely from distribution of the Program. |
| 256 |
|
| 257 |
If any portion of this section is held invalid or |
| 258 |
unenforceable under any particular circumstance, the |
| 259 |
balance of the section is intended to apply and the section |
| 260 |
as a whole is intended to apply in other circumstances. |
| 261 |
|
| 262 |
It is not the purpose of this section to induce you to |
| 263 |
infringe any patents or other property right claims or to |
| 264 |
contest validity of any such claims; this section has the |
| 265 |
sole purpose of protecting the integrity of the free |
| 266 |
software distribution system, which is implemented by |
| 267 |
public license practices. Many people have made generous |
| 268 |
contributions to the wide range of software distributed |
| 269 |
through that system in reliance on consistent application |
| 270 |
of that system; it is up to the author/donor to decide if |
| 271 |
he or she is willing to distribute software through any |
| 272 |
other system and a licensee cannot impose that choice. |
| 273 |
|
| 274 |
This section is intended to make thoroughly clear what is |
| 275 |
believed to be a consequence of the rest of this License. |
| 276 |
|
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8. If the distribution and/or use of the Program is |
| 278 |
restricted in certain countries either by patents or by |
| 279 |
copyrighted interfaces, the original copyright holder who |
| 280 |
places the Program under this License may add an explicit |
| 281 |
geographical distribution limitation excluding those |
| 282 |
countries, so that distribution is permitted only in or |
| 283 |
among countries not thus excluded. In such case, this |
| 284 |
License incorporates the limitation as if written in the |
| 285 |
body of this License. |
| 286 |
|
| 287 |
9. The Free Software Foundation may |
| 288 |
publish revised and/or new versions of the General Public |
| 289 |
License from time to time. Such new versions will be |
| 290 |
similar in spirit to the present version, but may differ in |
| 291 |
detail to address new problems or concerns. |
| 292 |
|
| 293 |
Each version is given a distinguishing version number. If |
| 294 |
the Program specifies a version number of this License |
| 295 |
which applies to it and "any later version", you have the |
| 296 |
option of following the terms and conditions either of that |
| 297 |
version or of any later version published by the Free |
| 298 |
Software Foundation. If the Program does not specify a |
| 299 |
version number of this License, you may choose any version |
| 300 |
ever published by the Free Software Foundation. |
| 301 |
|
| 302 |
10. If you wish to incorporate parts of the Program into |
| 303 |
other free programs whose distribution conditions are |
| 304 |
different, write to the author to ask for permission. For |
| 305 |
software which is copyrighted by the Free Software |
| 306 |
Foundation, write to the Free Software Foundation; we |
| 307 |
sometimes make exceptions for this. Our decision will be |
| 308 |
guided by the two goals of preserving the free status of |
| 309 |
all derivatives of our free software and of promoting the |
| 310 |
sharing and reuse of software generally. |
| 311 |
|
| 312 |
NO WARRANTY |
| 313 |
|
| 314 |
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE |
| 315 |
IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY |
| 316 |
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING |
| 317 |
THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE |
| 318 |
PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER |
| 319 |
EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE |
| 320 |
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A |
| 321 |
PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND |
| 322 |
PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM |
| 323 |
PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY |
| 324 |
SERVICING, REPAIR OR CORRECTION. |
| 325 |
|
| 326 |
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR |
| 327 |
AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY |
| 328 |
OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM |
| 329 |
AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING |
| 330 |
ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES |
| 331 |
ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM |
| 332 |
(INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING |
| 333 |
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD |
| 334 |
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY |
| 335 |
OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS |
| 336 |
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. |
| 337 |
|
| 338 |
END OF TERMS AND CONDITIONS |
| 339 |
|
| 340 |
|
| 341 |
|
| 342 |
|
| 343 |
How to Apply These Terms to Your New Programs |
| 344 |
|
| 345 |
If you develop a new program, and you want it to be of |
| 346 |
the greatest possible use to the public, the best way to |
| 347 |
achieve this is to make it free software which everyone can |
| 348 |
redistribute and change under these terms. |
| 349 |
|
| 350 |
To do so, attach the following notices to the program. |
| 351 |
It is safest to attach them to the start of each source |
| 352 |
file to most effectively convey the exclusion of warranty; |
| 353 |
and each file should have at least the "copyright" line and |
| 354 |
a pointer to where the full notice is found. |
| 355 |
|
| 356 |
/* |
| 357 |
<one line to give the program's name and a brief idea of what it does.> |
| 358 |
Copyright (C) 19yy <name of author> |
| 359 |
|
| 360 |
This program is free software; you can redistribute it and/or modify |
| 361 |
it under the terms of the GNU General Public License as published by |
| 362 |
the Free Software Foundation; either version 2 of the License, or |
| 363 |
(at your option) any later version. |
| 364 |
|
| 365 |
This program is distributed in the hope that it will be useful, |
| 366 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 367 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 368 |
GNU General Public License for more details. |
| 369 |
|
| 370 |
You should have received a copy of the GNU General Public License |
| 371 |
along with this program; if not, write to the Free Software |
| 372 |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 373 |
*/ |
| 374 |
|
| 375 |
Also add information on how to contact you by electronic |
| 376 |
and paper mail. |
| 377 |
|
| 378 |
If the program is interactive, make it output a short |
| 379 |
notice like this when it starts in an interactive mode: |
| 380 |
|
| 381 |
|
| 382 |
Gnomovision version 69, Copyright (C) 19yy name of author |
| 383 |
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. |
| 384 |
This is free software, and you are welcome to redistribute it |
| 385 |
under certain conditions; type `show c' for details. |
| 386 |
|
| 387 |
The hypothetical commands `show w' and `show c' should show |
| 388 |
the appropriate parts of the General Public License. Of |
| 389 |
course, the commands you use may be called something other |
| 390 |
than `show w' and `show c'; they could even be mouse-clicks |
| 391 |
or menu items--whatever suits your program. |
| 392 |
|
| 393 |
You should also get your employer (if you work as a |
| 394 |
programmer) or your school, if any, to sign a "copyright |
| 395 |
disclaimer" for the program, if necessary. Here is a |
| 396 |
sample; alter the names: |
| 397 |
|
| 398 |
Yoyodyne, Inc., hereby disclaims all copyright interest |
| 399 |
in the program `Gnomovision' (which makes passes at |
| 400 |
compilers) written by James Hacker. |
| 401 |
|
| 402 |
<signature of Ty Coon>, 1 April 1989 |
| 403 |
Ty Coon, President of Vice |
| 404 |
|
| 405 |
This General Public License does not permit incorporating |
| 406 |
your program into proprietary programs. If your program is |
| 407 |
a subroutine library, you may consider it more useful to |
| 408 |
permit linking proprietary applications with the library. |
| 409 |
If this is what you want to do, use the GNU Library General |
| 410 |
Public License instead of this License. |
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