/[dtapublic]/to_be_filed/sf_code/esrgpcpj/shared/c_datd/crchashfuncs.c
ViewVC logotype

Annotation of /to_be_filed/sf_code/esrgpcpj/shared/c_datd/crchashfuncs.c

Parent Directory Parent Directory | Revision Log Revision Log


Revision 29 - (hide annotations) (download)
Sat Oct 8 07:08:47 2016 UTC (8 years ago) by dashley
File MIME type: text/plain
File size: 49150 byte(s)
Directories relocated.
1 dashley 25 /* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/c_datd/crchashfuncs.c,v 1.3 2001/07/26 21:41:21 dtashley Exp $ */
2     //--------------------------------------------------------------------------------
3     //Copyright 2001 David T. Ashley
4     //-------------------------------------------------------------------------------------------------
5     //This source code and any program in which it is compiled/used is provided under the GNU GENERAL
6     //PUBLIC LICENSE, Version 3, full license text below.
7     //-------------------------------------------------------------------------------------------------
8     // GNU GENERAL PUBLIC LICENSE
9     // Version 3, 29 June 2007
10     //
11     // Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
12     // Everyone is permitted to copy and distribute verbatim copies
13     // of this license document, but changing it is not allowed.
14     //
15     // Preamble
16     //
17     // The GNU General Public License is a free, copyleft license for
18     //software and other kinds of works.
19     //
20     // The licenses for most software and other practical works are designed
21     //to take away your freedom to share and change the works. By contrast,
22     //the GNU General Public License is intended to guarantee your freedom to
23     //share and change all versions of a program--to make sure it remains free
24     //software for all its users. We, the Free Software Foundation, use the
25     //GNU General Public License for most of our software; it applies also to
26     //any other work released this way by its authors. You can apply it to
27     //your programs, too.
28     //
29     // When we speak of free software, we are referring to freedom, not
30     //price. Our General Public Licenses are designed to make sure that you
31     //have the freedom to distribute copies of free software (and charge for
32     //them if you wish), that you receive source code or can get it if you
33     //want it, that you can change the software or use pieces of it in new
34     //free programs, and that you know you can do these things.
35     //
36     // To protect your rights, we need to prevent others from denying you
37     //these rights or asking you to surrender the rights. Therefore, you have
38     //certain responsibilities if you distribute copies of the software, or if
39     //you modify it: responsibilities to respect the freedom of others.
40     //
41     // For example, if you distribute copies of such a program, whether
42     //gratis or for a fee, you must pass on to the recipients the same
43     //freedoms that you received. You must make sure that they, too, receive
44     //or can get the source code. And you must show them these terms so they
45     //know their rights.
46     //
47     // Developers that use the GNU GPL protect your rights with two steps:
48     //(1) assert copyright on the software, and (2) offer you this License
49     //giving you legal permission to copy, distribute and/or modify it.
50     //
51     // For the developers' and authors' protection, the GPL clearly explains
52     //that there is no warranty for this free software. For both users' and
53     //authors' sake, the GPL requires that modified versions be marked as
54     //changed, so that their problems will not be attributed erroneously to
55     //authors of previous versions.
56     //
57     // Some devices are designed to deny users access to install or run
58     //modified versions of the software inside them, although the manufacturer
59     //can do so. This is fundamentally incompatible with the aim of
60     //protecting users' freedom to change the software. The systematic
61     //pattern of such abuse occurs in the area of products for individuals to
62     //use, which is precisely where it is most unacceptable. Therefore, we
63     //have designed this version of the GPL to prohibit the practice for those
64     //products. If such problems arise substantially in other domains, we
65     //stand ready to extend this provision to those domains in future versions
66     //of the GPL, as needed to protect the freedom of users.
67     //
68     // Finally, every program is threatened constantly by software patents.
69     //States should not allow patents to restrict development and use of
70     //software on general-purpose computers, but in those that do, we wish to
71     //avoid the special danger that patents applied to a free program could
72     //make it effectively proprietary. To prevent this, the GPL assures that
73     //patents cannot be used to render the program non-free.
74     //
75     // The precise terms and conditions for copying, distribution and
76     //modification follow.
77     //
78     // TERMS AND CONDITIONS
79     //
80     // 0. Definitions.
81     //
82     // "This License" refers to version 3 of the GNU General Public License.
83     //
84     // "Copyright" also means copyright-like laws that apply to other kinds of
85     //works, such as semiconductor masks.
86     //
87     // "The Program" refers to any copyrightable work licensed under this
88     //License. Each licensee is addressed as "you". "Licensees" and
89     //"recipients" may be individuals or organizations.
90     //
91     // To "modify" a work means to copy from or adapt all or part of the work
92     //in a fashion requiring copyright permission, other than the making of an
93     //exact copy. The resulting work is called a "modified version" of the
94     //earlier work or a work "based on" the earlier work.
95     //
96     // A "covered work" means either the unmodified Program or a work based
97     //on the Program.
98     //
99     // To "propagate" a work means to do anything with it that, without
100     //permission, would make you directly or secondarily liable for
101     //infringement under applicable copyright law, except executing it on a
102     //computer or modifying a private copy. Propagation includes copying,
103     //distribution (with or without modification), making available to the
104     //public, and in some countries other activities as well.
105     //
106     // To "convey" a work means any kind of propagation that enables other
107     //parties to make or receive copies. Mere interaction with a user through
108     //a computer network, with no transfer of a copy, is not conveying.
109     //
110     // An interactive user interface displays "Appropriate Legal Notices"
111     //to the extent that it includes a convenient and prominently visible
112     //feature that (1) displays an appropriate copyright notice, and (2)
113     //tells the user that there is no warranty for the work (except to the
114     //extent that warranties are provided), that licensees may convey the
115     //work under this License, and how to view a copy of this License. If
116     //the interface presents a list of user commands or options, such as a
117     //menu, a prominent item in the list meets this criterion.
118     //
119     // 1. Source Code.
120     //
121     // The "source code" for a work means the preferred form of the work
122     //for making modifications to it. "Object code" means any non-source
123     //form of a work.
124     //
125     // A "Standard Interface" means an interface that either is an official
126     //standard defined by a recognized standards body, or, in the case of
127     //interfaces specified for a particular programming language, one that
128     //is widely used among developers working in that language.
129     //
130     // The "System Libraries" of an executable work include anything, other
131     //than the work as a whole, that (a) is included in the normal form of
132     //packaging a Major Component, but which is not part of that Major
133     //Component, and (b) serves only to enable use of the work with that
134     //Major Component, or to implement a Standard Interface for which an
135     //implementation is available to the public in source code form. A
136     //"Major Component", in this context, means a major essential component
137     //(kernel, window system, and so on) of the specific operating system
138     //(if any) on which the executable work runs, or a compiler used to
139     //produce the work, or an object code interpreter used to run it.
140     //
141     // The "Corresponding Source" for a work in object code form means all
142     //the source code needed to generate, install, and (for an executable
143     //work) run the object code and to modify the work, including scripts to
144     //control those activities. However, it does not include the work's
145     //System Libraries, or general-purpose tools or generally available free
146     //programs which are used unmodified in performing those activities but
147     //which are not part of the work. For example, Corresponding Source
148     //includes interface definition files associated with source files for
149     //the work, and the source code for shared libraries and dynamically
150     //linked subprograms that the work is specifically designed to require,
151     //such as by intimate data communication or control flow between those
152     //subprograms and other parts of the work.
153     //
154     // The Corresponding Source need not include anything that users
155     //can regenerate automatically from other parts of the Corresponding
156     //Source.
157     //
158     // The Corresponding Source for a work in source code form is that
159     //same work.
160     //
161     // 2. Basic Permissions.
162     //
163     // All rights granted under this License are granted for the term of
164     //copyright on the Program, and are irrevocable provided the stated
165     //conditions are met. This License explicitly affirms your unlimited
166     //permission to run the unmodified Program. The output from running a
167     //covered work is covered by this License only if the output, given its
168     //content, constitutes a covered work. This License acknowledges your
169     //rights of fair use or other equivalent, as provided by copyright law.
170     //
171     // You may make, run and propagate covered works that you do not
172     //convey, without conditions so long as your license otherwise remains
173     //in force. You may convey covered works to others for the sole purpose
174     //of having them make modifications exclusively for you, or provide you
175     //with facilities for running those works, provided that you comply with
176     //the terms of this License in conveying all material for which you do
177     //not control copyright. Those thus making or running the covered works
178     //for you must do so exclusively on your behalf, under your direction
179     //and control, on terms that prohibit them from making any copies of
180     //your copyrighted material outside their relationship with you.
181     //
182     // Conveying under any other circumstances is permitted solely under
183     //the conditions stated below. Sublicensing is not allowed; section 10
184     //makes it unnecessary.
185     //
186     // 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
187     //
188     // No covered work shall be deemed part of an effective technological
189     //measure under any applicable law fulfilling obligations under article
190     //11 of the WIPO copyright treaty adopted on 20 December 1996, or
191     //similar laws prohibiting or restricting circumvention of such
192     //measures.
193     //
194     // When you convey a covered work, you waive any legal power to forbid
195     //circumvention of technological measures to the extent such circumvention
196     //is effected by exercising rights under this License with respect to
197     //the covered work, and you disclaim any intention to limit operation or
198     //modification of the work as a means of enforcing, against the work's
199     //users, your or third parties' legal rights to forbid circumvention of
200     //technological measures.
201     //
202     // 4. Conveying Verbatim Copies.
203     //
204     // You may convey verbatim copies of the Program's source code as you
205     //receive it, in any medium, provided that you conspicuously and
206     //appropriately publish on each copy an appropriate copyright notice;
207     //keep intact all notices stating that this License and any
208     //non-permissive terms added in accord with section 7 apply to the code;
209     //keep intact all notices of the absence of any warranty; and give all
210     //recipients a copy of this License along with the Program.
211     //
212     // You may charge any price or no price for each copy that you convey,
213     //and you may offer support or warranty protection for a fee.
214     //
215     // 5. Conveying Modified Source Versions.
216     //
217     // You may convey a work based on the Program, or the modifications to
218     //produce it from the Program, in the form of source code under the
219     //terms of section 4, provided that you also meet all of these conditions:
220     //
221     // a) The work must carry prominent notices stating that you modified
222     // it, and giving a relevant date.
223     //
224     // b) The work must carry prominent notices stating that it is
225     // released under this License and any conditions added under section
226     // 7. This requirement modifies the requirement in section 4 to
227     // "keep intact all notices".
228     //
229     // c) You must license the entire work, as a whole, under this
230     // License to anyone who comes into possession of a copy. This
231     // License will therefore apply, along with any applicable section 7
232     // additional terms, to the whole of the work, and all its parts,
233     // regardless of how they are packaged. This License gives no
234     // permission to license the work in any other way, but it does not
235     // invalidate such permission if you have separately received it.
236     //
237     // d) If the work has interactive user interfaces, each must display
238     // Appropriate Legal Notices; however, if the Program has interactive
239     // interfaces that do not display Appropriate Legal Notices, your
240     // work need not make them do so.
241     //
242     // A compilation of a covered work with other separate and independent
243     //works, which are not by their nature extensions of the covered work,
244     //and which are not combined with it such as to form a larger program,
245     //in or on a volume of a storage or distribution medium, is called an
246     //"aggregate" if the compilation and its resulting copyright are not
247     //used to limit the access or legal rights of the compilation's users
248     //beyond what the individual works permit. Inclusion of a covered work
249     //in an aggregate does not cause this License to apply to the other
250     //parts of the aggregate.
251     //
252     // 6. Conveying Non-Source Forms.
253     //
254     // You may convey a covered work in object code form under the terms
255     //of sections 4 and 5, provided that you also convey the
256     //machine-readable Corresponding Source under the terms of this License,
257     //in one of these ways:
258     //
259     // a) Convey the object code in, or embodied in, a physical product
260     // (including a physical distribution medium), accompanied by the
261     // Corresponding Source fixed on a durable physical medium
262     // customarily used for software interchange.
263     //
264     // b) Convey the object code in, or embodied in, a physical product
265     // (including a physical distribution medium), accompanied by a
266     // written offer, valid for at least three years and valid for as
267     // long as you offer spare parts or customer support for that product
268     // model, to give anyone who possesses the object code either (1) a
269     // copy of the Corresponding Source for all the software in the
270     // product that is covered by this License, on a durable physical
271     // medium customarily used for software interchange, for a price no
272     // more than your reasonable cost of physically performing this
273     // conveying of source, or (2) access to copy the
274     // Corresponding Source from a network server at no charge.
275     //
276     // c) Convey individual copies of the object code with a copy of the
277     // written offer to provide the Corresponding Source. This
278     // alternative is allowed only occasionally and noncommercially, and
279     // only if you received the object code with such an offer, in accord
280     // with subsection 6b.
281     //
282     // d) Convey the object code by offering access from a designated
283     // place (gratis or for a charge), and offer equivalent access to the
284     // Corresponding Source in the same way through the same place at no
285     // further charge. You need not require recipients to copy the
286     // Corresponding Source along with the object code. If the place to
287     // copy the object code is a network server, the Corresponding Source
288     // may be on a different server (operated by you or a third party)
289     // that supports equivalent copying facilities, provided you maintain
290     // clear directions next to the object code saying where to find the
291     // Corresponding Source. Regardless of what server hosts the
292     // Corresponding Source, you remain obligated to ensure that it is
293     // available for as long as needed to satisfy these requirements.
294     //
295     // e) Convey the object code using peer-to-peer transmission, provided
296     // you inform other peers where the object code and Corresponding
297     // Source of the work are being offered to the general public at no
298     // charge under subsection 6d.
299     //
300     // A separable portion of the object code, whose source code is excluded
301     //from the Corresponding Source as a System Library, need not be
302     //included in conveying the object code work.
303     //
304     // A "User Product" is either (1) a "consumer product", which means any
305     //tangible personal property which is normally used for personal, family,
306     //or household purposes, or (2) anything designed or sold for incorporation
307     //into a dwelling. In determining whether a product is a consumer product,
308     //doubtful cases shall be resolved in favor of coverage. For a particular
309     //product received by a particular user, "normally used" refers to a
310     //typical or common use of that class of product, regardless of the status
311     //of the particular user or of the way in which the particular user
312     //actually uses, or expects or is expected to use, the product. A product
313     //is a consumer product regardless of whether the product has substantial
314     //commercial, industrial or non-consumer uses, unless such uses represent
315     //the only significant mode of use of the product.
316     //
317     // "Installation Information" for a User Product means any methods,
318     //procedures, authorization keys, or other information required to install
319     //and execute modified versions of a covered work in that User Product from
320     //a modified version of its Corresponding Source. The information must
321     //suffice to ensure that the continued functioning of the modified object
322     //code is in no case prevented or interfered with solely because
323     //modification has been made.
324     //
325     // If you convey an object code work under this section in, or with, or
326     //specifically for use in, a User Product, and the conveying occurs as
327     //part of a transaction in which the right of possession and use of the
328     //User Product is transferred to the recipient in perpetuity or for a
329     //fixed term (regardless of how the transaction is characterized), the
330     //Corresponding Source conveyed under this section must be accompanied
331     //by the Installation Information. But this requirement does not apply
332     //if neither you nor any third party retains the ability to install
333     //modified object code on the User Product (for example, the work has
334     //been installed in ROM).
335     //
336     // The requirement to provide Installation Information does not include a
337     //requirement to continue to provide support service, warranty, or updates
338     //for a work that has been modified or installed by the recipient, or for
339     //the User Product in which it has been modified or installed. Access to a
340     //network may be denied when the modification itself materially and
341     //adversely affects the operation of the network or violates the rules and
342     //protocols for communication across the network.
343     //
344     // Corresponding Source conveyed, and Installation Information provided,
345     //in accord with this section must be in a format that is publicly
346     //documented (and with an implementation available to the public in
347     //source code form), and must require no special password or key for
348     //unpacking, reading or copying.
349     //
350     // 7. Additional Terms.
351     //
352     // "Additional permissions" are terms that supplement the terms of this
353     //License by making exceptions from one or more of its conditions.
354     //Additional permissions that are applicable to the entire Program shall
355     //be treated as though they were included in this License, to the extent
356     //that they are valid under applicable law. If additional permissions
357     //apply only to part of the Program, that part may be used separately
358     //under those permissions, but the entire Program remains governed by
359     //this License without regard to the additional permissions.
360     //
361     // When you convey a copy of a covered work, you may at your option
362     //remove any additional permissions from that copy, or from any part of
363     //it. (Additional permissions may be written to require their own
364     //removal in certain cases when you modify the work.) You may place
365     //additional permissions on material, added by you to a covered work,
366     //for which you have or can give appropriate copyright permission.
367     //
368     // Notwithstanding any other provision of this License, for material you
369     //add to a covered work, you may (if authorized by the copyright holders of
370     //that material) supplement the terms of this License with terms:
371     //
372     // a) Disclaiming warranty or limiting liability differently from the
373     // terms of sections 15 and 16 of this License; or
374     //
375     // b) Requiring preservation of specified reasonable legal notices or
376     // author attributions in that material or in the Appropriate Legal
377     // Notices displayed by works containing it; or
378     //
379     // c) Prohibiting misrepresentation of the origin of that material, or
380     // requiring that modified versions of such material be marked in
381     // reasonable ways as different from the original version; or
382     //
383     // d) Limiting the use for publicity purposes of names of licensors or
384     // authors of the material; or
385     //
386     // e) Declining to grant rights under trademark law for use of some
387     // trade names, trademarks, or service marks; or
388     //
389     // f) Requiring indemnification of licensors and authors of that
390     // material by anyone who conveys the material (or modified versions of
391     // it) with contractual assumptions of liability to the recipient, for
392     // any liability that these contractual assumptions directly impose on
393     // those licensors and authors.
394     //
395     // All other non-permissive additional terms are considered "further
396     //restrictions" within the meaning of section 10. If the Program as you
397     //received it, or any part of it, contains a notice stating that it is
398     //governed by this License along with a term that is a further
399     //restriction, you may remove that term. If a license document contains
400     //a further restriction but permits relicensing or conveying under this
401     //License, you may add to a covered work material governed by the terms
402     //of that license document, provided that the further restriction does
403     //not survive such relicensing or conveying.
404     //
405     // If you add terms to a covered work in accord with this section, you
406     //must place, in the relevant source files, a statement of the
407     //additional terms that apply to those files, or a notice indicating
408     //where to find the applicable terms.
409     //
410     // Additional terms, permissive or non-permissive, may be stated in the
411     //form of a separately written license, or stated as exceptions;
412     //the above requirements apply either way.
413     //
414     // 8. Termination.
415     //
416     // You may not propagate or modify a covered work except as expressly
417     //provided under this License. Any attempt otherwise to propagate or
418     //modify it is void, and will automatically terminate your rights under
419     //this License (including any patent licenses granted under the third
420     //paragraph of section 11).
421     //
422     // However, if you cease all violation of this License, then your
423     //license from a particular copyright holder is reinstated (a)
424     //provisionally, unless and until the copyright holder explicitly and
425     //finally terminates your license, and (b) permanently, if the copyright
426     //holder fails to notify you of the violation by some reasonable means
427     //prior to 60 days after the cessation.
428     //
429     // Moreover, your license from a particular copyright holder is
430     //reinstated permanently if the copyright holder notifies you of the
431     //violation by some reasonable means, this is the first time you have
432     //received notice of violation of this License (for any work) from that
433     //copyright holder, and you cure the violation prior to 30 days after
434     //your receipt of the notice.
435     //
436     // Termination of your rights under this section does not terminate the
437     //licenses of parties who have received copies or rights from you under
438     //this License. If your rights have been terminated and not permanently
439     //reinstated, you do not qualify to receive new licenses for the same
440     //material under section 10.
441     //
442     // 9. Acceptance Not Required for Having Copies.
443     //
444     // You are not required to accept this License in order to receive or
445     //run a copy of the Program. Ancillary propagation of a covered work
446     //occurring solely as a consequence of using peer-to-peer transmission
447     //to receive a copy likewise does not require acceptance. However,
448     //nothing other than this License grants you permission to propagate or
449     //modify any covered work. These actions infringe copyright if you do
450     //not accept this License. Therefore, by modifying or propagating a
451     //covered work, you indicate your acceptance of this License to do so.
452     //
453     // 10. Automatic Licensing of Downstream Recipients.
454     //
455     // Each time you convey a covered work, the recipient automatically
456     //receives a license from the original licensors, to run, modify and
457     //propagate that work, subject to this License. You are not responsible
458     //for enforcing compliance by third parties with this License.
459     //
460     // An "entity transaction" is a transaction transferring control of an
461     //organization, or substantially all assets of one, or subdividing an
462     //organization, or merging organizations. If propagation of a covered
463     //work results from an entity transaction, each party to that
464     //transaction who receives a copy of the work also receives whatever
465     //licenses to the work the party's predecessor in interest had or could
466     //give under the previous paragraph, plus a right to possession of the
467     //Corresponding Source of the work from the predecessor in interest, if
468     //the predecessor has it or can get it with reasonable efforts.
469     //
470     // You may not impose any further restrictions on the exercise of the
471     //rights granted or affirmed under this License. For example, you may
472     //not impose a license fee, royalty, or other charge for exercise of
473     //rights granted under this License, and you may not initiate litigation
474     //(including a cross-claim or counterclaim in a lawsuit) alleging that
475     //any patent claim is infringed by making, using, selling, offering for
476     //sale, or importing the Program or any portion of it.
477     //
478     // 11. Patents.
479     //
480     // A "contributor" is a copyright holder who authorizes use under this
481     //License of the Program or a work on which the Program is based. The
482     //work thus licensed is called the contributor's "contributor version".
483     //
484     // A contributor's "essential patent claims" are all patent claims
485     //owned or controlled by the contributor, whether already acquired or
486     //hereafter acquired, that would be infringed by some manner, permitted
487     //by this License, of making, using, or selling its contributor version,
488     //but do not include claims that would be infringed only as a
489     //consequence of further modification of the contributor version. For
490     //purposes of this definition, "control" includes the right to grant
491     //patent sublicenses in a manner consistent with the requirements of
492     //this License.
493     //
494     // Each contributor grants you a non-exclusive, worldwide, royalty-free
495     //patent license under the contributor's essential patent claims, to
496     //make, use, sell, offer for sale, import and otherwise run, modify and
497     //propagate the contents of its contributor version.
498     //
499     // In the following three paragraphs, a "patent license" is any express
500     //agreement or commitment, however denominated, not to enforce a patent
501     //(such as an express permission to practice a patent or covenant not to
502     //sue for patent infringement). To "grant" such a patent license to a
503     //party means to make such an agreement or commitment not to enforce a
504     //patent against the party.
505     //
506     // If you convey a covered work, knowingly relying on a patent license,
507     //and the Corresponding Source of the work is not available for anyone
508     //to copy, free of charge and under the terms of this License, through a
509     //publicly available network server or other readily accessible means,
510     //then you must either (1) cause the Corresponding Source to be so
511     //available, or (2) arrange to deprive yourself of the benefit of the
512     //patent license for this particular work, or (3) arrange, in a manner
513     //consistent with the requirements of this License, to extend the patent
514     //license to downstream recipients. "Knowingly relying" means you have
515     //actual knowledge that, but for the patent license, your conveying the
516     //covered work in a country, or your recipient's use of the covered work
517     //in a country, would infringe one or more identifiable patents in that
518     //country that you have reason to believe are valid.
519     //
520     // If, pursuant to or in connection with a single transaction or
521     //arrangement, you convey, or propagate by procuring conveyance of, a
522     //covered work, and grant a patent license to some of the parties
523     //receiving the covered work authorizing them to use, propagate, modify
524     //or convey a specific copy of the covered work, then the patent license
525     //you grant is automatically extended to all recipients of the covered
526     //work and works based on it.
527     //
528     // A patent license is "discriminatory" if it does not include within
529     //the scope of its coverage, prohibits the exercise of, or is
530     //conditioned on the non-exercise of one or more of the rights that are
531     //specifically granted under this License. You may not convey a covered
532     //work if you are a party to an arrangement with a third party that is
533     //in the business of distributing software, under which you make payment
534     //to the third party based on the extent of your activity of conveying
535     //the work, and under which the third party grants, to any of the
536     //parties who would receive the covered work from you, a discriminatory
537     //patent license (a) in connection with copies of the covered work
538     //conveyed by you (or copies made from those copies), or (b) primarily
539     //for and in connection with specific products or compilations that
540     //contain the covered work, unless you entered into that arrangement,
541     //or that patent license was granted, prior to 28 March 2007.
542     //
543     // Nothing in this License shall be construed as excluding or limiting
544     //any implied license or other defenses to infringement that may
545     //otherwise be available to you under applicable patent law.
546     //
547     // 12. No Surrender of Others' Freedom.
548     //
549     // If conditions are imposed on you (whether by court order, agreement or
550     //otherwise) that contradict the conditions of this License, they do not
551     //excuse you from the conditions of this License. If you cannot convey a
552     //covered work so as to satisfy simultaneously your obligations under this
553     //License and any other pertinent obligations, then as a consequence you may
554     //not convey it at all. For example, if you agree to terms that obligate you
555     //to collect a royalty for further conveying from those to whom you convey
556     //the Program, the only way you could satisfy both those terms and this
557     //License would be to refrain entirely from conveying the Program.
558     //
559     // 13. Use with the GNU Affero General Public License.
560     //
561     // Notwithstanding any other provision of this License, you have
562     //permission to link or combine any covered work with a work licensed
563     //under version 3 of the GNU Affero General Public License into a single
564     //combined work, and to convey the resulting work. The terms of this
565     //License will continue to apply to the part which is the covered work,
566     //but the special requirements of the GNU Affero General Public License,
567     //section 13, concerning interaction through a network will apply to the
568     //combination as such.
569     //
570     // 14. Revised Versions of this License.
571     //
572     // The Free Software Foundation may publish revised and/or new versions of
573     //the GNU General Public License from time to time. Such new versions will
574     //be similar in spirit to the present version, but may differ in detail to
575     //address new problems or concerns.
576     //
577     // Each version is given a distinguishing version number. If the
578     //Program specifies that a certain numbered version of the GNU General
579     //Public License "or any later version" applies to it, you have the
580     //option of following the terms and conditions either of that numbered
581     //version or of any later version published by the Free Software
582     //Foundation. If the Program does not specify a version number of the
583     //GNU General Public License, you may choose any version ever published
584     //by the Free Software Foundation.
585     //
586     // If the Program specifies that a proxy can decide which future
587     //versions of the GNU General Public License can be used, that proxy's
588     //public statement of acceptance of a version permanently authorizes you
589     //to choose that version for the Program.
590     //
591     // Later license versions may give you additional or different
592     //permissions. However, no additional obligations are imposed on any
593     //author or copyright holder as a result of your choosing to follow a
594     //later version.
595     //
596     // 15. Disclaimer of Warranty.
597     //
598     // THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
599     //APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
600     //HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
601     //OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
602     //THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
603     //PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
604     //IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
605     //ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
606     //
607     // 16. Limitation of Liability.
608     //
609     // IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
610     //WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
611     //THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
612     //GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
613     //USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
614     //DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
615     //PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
616     //EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
617     //SUCH DAMAGES.
618     //
619     // 17. Interpretation of Sections 15 and 16.
620     //
621     // If the disclaimer of warranty and limitation of liability provided
622     //above cannot be given local legal effect according to their terms,
623     //reviewing courts shall apply local law that most closely approximates
624     //an absolute waiver of all civil liability in connection with the
625     //Program, unless a warranty or assumption of liability accompanies a
626     //copy of the Program in return for a fee.
627     //
628     // END OF TERMS AND CONDITIONS
629     //
630     // How to Apply These Terms to Your New Programs
631     //
632     // If you develop a new program, and you want it to be of the greatest
633     //possible use to the public, the best way to achieve this is to make it
634     //free software which everyone can redistribute and change under these terms.
635     //
636     // To do so, attach the following notices to the program. It is safest
637     //to attach them to the start of each source file to most effectively
638     //state the exclusion of warranty; and each file should have at least
639     //the "copyright" line and a pointer to where the full notice is found.
640     //
641     // <one line to give the program's name and a brief idea of what it does.>
642     // Copyright (C) <year> <name of author>
643     //
644     // This program is free software: you can redistribute it and/or modify
645     // it under the terms of the GNU General Public License as published by
646     // the Free Software Foundation, either version 3 of the License, or
647     // (at your option) any later version.
648     //
649     // This program is distributed in the hope that it will be useful,
650     // but WITHOUT ANY WARRANTY; without even the implied warranty of
651     // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
652     // GNU General Public License for more details.
653     //
654     // You should have received a copy of the GNU General Public License
655     // along with this program. If not, see <http://www.gnu.org/licenses/>.
656     //
657     //Also add information on how to contact you by electronic and paper mail.
658     //
659     // If the program does terminal interaction, make it output a short
660     //notice like this when it starts in an interactive mode:
661     //
662     // <program> Copyright (C) <year> <name of author>
663     // This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
664     // This is free software, and you are welcome to redistribute it
665     // under certain conditions; type `show c' for details.
666     //
667     //The hypothetical commands `show w' and `show c' should show the appropriate
668     //parts of the General Public License. Of course, your program's commands
669     //might be different; for a GUI interface, you would use an "about box".
670     //
671     // You should also get your employer (if you work as a programmer) or school,
672     //if any, to sign a "copyright disclaimer" for the program, if necessary.
673     //For more information on this, and how to apply and follow the GNU GPL, see
674     //<http://www.gnu.org/licenses/>.
675     //
676     // The GNU General Public License does not permit incorporating your program
677     //into proprietary programs. If your program is a subroutine library, you
678     //may consider it more useful to permit linking proprietary applications with
679     //the library. If this is what you want to do, use the GNU Lesser General
680     //Public License instead of this License. But first, please read
681     //<http://www.gnu.org/philosophy/why-not-lgpl.html>.
682     //-------------------------------------------------------------------------------------------------
683     //--------------------------------------------------------------------------------
684     #define MODULE_CRCHASHFUNCS
685    
686     #include <assert.h>
687     #include <stdio.h>
688     #include <string.h>
689    
690     #include "crchashfuncs.h"
691    
692    
693     //This is the data table used to generate CRC-32 values. The code to
694     //generate these values isn't reproduced here (it was discarded after
695     //the values were generated), but this code originally came from a
696     //web page by Richard A. Ellingson. I do not at this time understand
697     //the math behind the generation or usage of this table.
698     static const unsigned CRCHASHFUNCS_crc32tab[256] =
699     {
700     /* [000] */ 0x00000000,
701     /* [001] */ 0x77073096,
702     /* [002] */ 0xEE0E612C,
703     /* [003] */ 0x990951BA,
704     /* [004] */ 0x076DC419,
705     /* [005] */ 0x706AF48F,
706     /* [006] */ 0xE963A535,
707     /* [007] */ 0x9E6495A3,
708     /* [008] */ 0x0EDB8832,
709     /* [009] */ 0x79DCB8A4,
710     /* [010] */ 0xE0D5E91E,
711     /* [011] */ 0x97D2D988,
712     /* [012] */ 0x09B64C2B,
713     /* [013] */ 0x7EB17CBD,
714     /* [014] */ 0xE7B82D07,
715     /* [015] */ 0x90BF1D91,
716     /* [016] */ 0x1DB71064,
717     /* [017] */ 0x6AB020F2,
718     /* [018] */ 0xF3B97148,
719     /* [019] */ 0x84BE41DE,
720     /* [020] */ 0x1ADAD47D,
721     /* [021] */ 0x6DDDE4EB,
722     /* [022] */ 0xF4D4B551,
723     /* [023] */ 0x83D385C7,
724     /* [024] */ 0x136C9856,
725     /* [025] */ 0x646BA8C0,
726     /* [026] */ 0xFD62F97A,
727     /* [027] */ 0x8A65C9EC,
728     /* [028] */ 0x14015C4F,
729     /* [029] */ 0x63066CD9,
730     /* [030] */ 0xFA0F3D63,
731     /* [031] */ 0x8D080DF5,
732     /* [032] */ 0x3B6E20C8,
733     /* [033] */ 0x4C69105E,
734     /* [034] */ 0xD56041E4,
735     /* [035] */ 0xA2677172,
736     /* [036] */ 0x3C03E4D1,
737     /* [037] */ 0x4B04D447,
738     /* [038] */ 0xD20D85FD,
739     /* [039] */ 0xA50AB56B,
740     /* [040] */ 0x35B5A8FA,
741     /* [041] */ 0x42B2986C,
742     /* [042] */ 0xDBBBC9D6,
743     /* [043] */ 0xACBCF940,
744     /* [044] */ 0x32D86CE3,
745     /* [045] */ 0x45DF5C75,
746     /* [046] */ 0xDCD60DCF,
747     /* [047] */ 0xABD13D59,
748     /* [048] */ 0x26D930AC,
749     /* [049] */ 0x51DE003A,
750     /* [050] */ 0xC8D75180,
751     /* [051] */ 0xBFD06116,
752     /* [052] */ 0x21B4F4B5,
753     /* [053] */ 0x56B3C423,
754     /* [054] */ 0xCFBA9599,
755     /* [055] */ 0xB8BDA50F,
756     /* [056] */ 0x2802B89E,
757     /* [057] */ 0x5F058808,
758     /* [058] */ 0xC60CD9B2,
759     /* [059] */ 0xB10BE924,
760     /* [060] */ 0x2F6F7C87,
761     /* [061] */ 0x58684C11,
762     /* [062] */ 0xC1611DAB,
763     /* [063] */ 0xB6662D3D,
764     /* [064] */ 0x76DC4190,
765     /* [065] */ 0x01DB7106,
766     /* [066] */ 0x98D220BC,
767     /* [067] */ 0xEFD5102A,
768     /* [068] */ 0x71B18589,
769     /* [069] */ 0x06B6B51F,
770     /* [070] */ 0x9FBFE4A5,
771     /* [071] */ 0xE8B8D433,
772     /* [072] */ 0x7807C9A2,
773     /* [073] */ 0x0F00F934,
774     /* [074] */ 0x9609A88E,
775     /* [075] */ 0xE10E9818,
776     /* [076] */ 0x7F6A0DBB,
777     /* [077] */ 0x086D3D2D,
778     /* [078] */ 0x91646C97,
779     /* [079] */ 0xE6635C01,
780     /* [080] */ 0x6B6B51F4,
781     /* [081] */ 0x1C6C6162,
782     /* [082] */ 0x856530D8,
783     /* [083] */ 0xF262004E,
784     /* [084] */ 0x6C0695ED,
785     /* [085] */ 0x1B01A57B,
786     /* [086] */ 0x8208F4C1,
787     /* [087] */ 0xF50FC457,
788     /* [088] */ 0x65B0D9C6,
789     /* [089] */ 0x12B7E950,
790     /* [090] */ 0x8BBEB8EA,
791     /* [091] */ 0xFCB9887C,
792     /* [092] */ 0x62DD1DDF,
793     /* [093] */ 0x15DA2D49,
794     /* [094] */ 0x8CD37CF3,
795     /* [095] */ 0xFBD44C65,
796     /* [096] */ 0x4DB26158,
797     /* [097] */ 0x3AB551CE,
798     /* [098] */ 0xA3BC0074,
799     /* [099] */ 0xD4BB30E2,
800     /* [100] */ 0x4ADFA541,
801     /* [101] */ 0x3DD895D7,
802     /* [102] */ 0xA4D1C46D,
803     /* [103] */ 0xD3D6F4FB,
804     /* [104] */ 0x4369E96A,
805     /* [105] */ 0x346ED9FC,
806     /* [106] */ 0xAD678846,
807     /* [107] */ 0xDA60B8D0,
808     /* [108] */ 0x44042D73,
809     /* [109] */ 0x33031DE5,
810     /* [110] */ 0xAA0A4C5F,
811     /* [111] */ 0xDD0D7CC9,
812     /* [112] */ 0x5005713C,
813     /* [113] */ 0x270241AA,
814     /* [114] */ 0xBE0B1010,
815     /* [115] */ 0xC90C2086,
816     /* [116] */ 0x5768B525,
817     /* [117] */ 0x206F85B3,
818     /* [118] */ 0xB966D409,
819     /* [119] */ 0xCE61E49F,
820     /* [120] */ 0x5EDEF90E,
821     /* [121] */ 0x29D9C998,
822     /* [122] */ 0xB0D09822,
823     /* [123] */ 0xC7D7A8B4,
824     /* [124] */ 0x59B33D17,
825     /* [125] */ 0x2EB40D81,
826     /* [126] */ 0xB7BD5C3B,
827     /* [127] */ 0xC0BA6CAD,
828     /* [128] */ 0xEDB88320,
829     /* [129] */ 0x9ABFB3B6,
830     /* [130] */ 0x03B6E20C,
831     /* [131] */ 0x74B1D29A,
832     /* [132] */ 0xEAD54739,
833     /* [133] */ 0x9DD277AF,
834     /* [134] */ 0x04DB2615,
835     /* [135] */ 0x73DC1683,
836     /* [136] */ 0xE3630B12,
837     /* [137] */ 0x94643B84,
838     /* [138] */ 0x0D6D6A3E,
839     /* [139] */ 0x7A6A5AA8,
840     /* [140] */ 0xE40ECF0B,
841     /* [141] */ 0x9309FF9D,
842     /* [142] */ 0x0A00AE27,
843     /* [143] */ 0x7D079EB1,
844     /* [144] */ 0xF00F9344,
845     /* [145] */ 0x8708A3D2,
846     /* [146] */ 0x1E01F268,
847     /* [147] */ 0x6906C2FE,
848     /* [148] */ 0xF762575D,
849     /* [149] */ 0x806567CB,
850     /* [150] */ 0x196C3671,
851     /* [151] */ 0x6E6B06E7,
852     /* [152] */ 0xFED41B76,
853     /* [153] */ 0x89D32BE0,
854     /* [154] */ 0x10DA7A5A,
855     /* [155] */ 0x67DD4ACC,
856     /* [156] */ 0xF9B9DF6F,
857     /* [157] */ 0x8EBEEFF9,
858     /* [158] */ 0x17B7BE43,
859     /* [159] */ 0x60B08ED5,
860     /* [160] */ 0xD6D6A3E8,
861     /* [161] */ 0xA1D1937E,
862     /* [162] */ 0x38D8C2C4,
863     /* [163] */ 0x4FDFF252,
864     /* [164] */ 0xD1BB67F1,
865     /* [165] */ 0xA6BC5767,
866     /* [166] */ 0x3FB506DD,
867     /* [167] */ 0x48B2364B,
868     /* [168] */ 0xD80D2BDA,
869     /* [169] */ 0xAF0A1B4C,
870     /* [170] */ 0x36034AF6,
871     /* [171] */ 0x41047A60,
872     /* [172] */ 0xDF60EFC3,
873     /* [173] */ 0xA867DF55,
874     /* [174] */ 0x316E8EEF,
875     /* [175] */ 0x4669BE79,
876     /* [176] */ 0xCB61B38C,
877     /* [177] */ 0xBC66831A,
878     /* [178] */ 0x256FD2A0,
879     /* [179] */ 0x5268E236,
880     /* [180] */ 0xCC0C7795,
881     /* [181] */ 0xBB0B4703,
882     /* [182] */ 0x220216B9,
883     /* [183] */ 0x5505262F,
884     /* [184] */ 0xC5BA3BBE,
885     /* [185] */ 0xB2BD0B28,
886     /* [186] */ 0x2BB45A92,
887     /* [187] */ 0x5CB36A04,
888     /* [188] */ 0xC2D7FFA7,
889     /* [189] */ 0xB5D0CF31,
890     /* [190] */ 0x2CD99E8B,
891     /* [191] */ 0x5BDEAE1D,
892     /* [192] */ 0x9B64C2B0,
893     /* [193] */ 0xEC63F226,
894     /* [194] */ 0x756AA39C,
895     /* [195] */ 0x026D930A,
896     /* [196] */ 0x9C0906A9,
897     /* [197] */ 0xEB0E363F,
898     /* [198] */ 0x72076785,
899     /* [199] */ 0x05005713,
900     /* [200] */ 0x95BF4A82,
901     /* [201] */ 0xE2B87A14,
902     /* [202] */ 0x7BB12BAE,
903     /* [203] */ 0x0CB61B38,
904     /* [204] */ 0x92D28E9B,
905     /* [205] */ 0xE5D5BE0D,
906     /* [206] */ 0x7CDCEFB7,
907     /* [207] */ 0x0BDBDF21,
908     /* [208] */ 0x86D3D2D4,
909     /* [209] */ 0xF1D4E242,
910     /* [210] */ 0x68DDB3F8,
911     /* [211] */ 0x1FDA836E,
912     /* [212] */ 0x81BE16CD,
913     /* [213] */ 0xF6B9265B,
914     /* [214] */ 0x6FB077E1,
915     /* [215] */ 0x18B74777,
916     /* [216] */ 0x88085AE6,
917     /* [217] */ 0xFF0F6A70,
918     /* [218] */ 0x66063BCA,
919     /* [219] */ 0x11010B5C,
920     /* [220] */ 0x8F659EFF,
921     /* [221] */ 0xF862AE69,
922     /* [222] */ 0x616BFFD3,
923     /* [223] */ 0x166CCF45,
924     /* [224] */ 0xA00AE278,
925     /* [225] */ 0xD70DD2EE,
926     /* [226] */ 0x4E048354,
927     /* [227] */ 0x3903B3C2,
928     /* [228] */ 0xA7672661,
929     /* [229] */ 0xD06016F7,
930     /* [230] */ 0x4969474D,
931     /* [231] */ 0x3E6E77DB,
932     /* [232] */ 0xAED16A4A,
933     /* [233] */ 0xD9D65ADC,
934     /* [234] */ 0x40DF0B66,
935     /* [235] */ 0x37D83BF0,
936     /* [236] */ 0xA9BCAE53,
937     /* [237] */ 0xDEBB9EC5,
938     /* [238] */ 0x47B2CF7F,
939     /* [239] */ 0x30B5FFE9,
940     /* [240] */ 0xBDBDF21C,
941     /* [241] */ 0xCABAC28A,
942     /* [242] */ 0x53B39330,
943     /* [243] */ 0x24B4A3A6,
944     /* [244] */ 0xBAD03605,
945     /* [245] */ 0xCDD70693,
946     /* [246] */ 0x54DE5729,
947     /* [247] */ 0x23D967BF,
948     /* [248] */ 0xB3667A2E,
949     /* [249] */ 0xC4614AB8,
950     /* [250] */ 0x5D681B02,
951     /* [251] */ 0x2A6F2B94,
952     /* [252] */ 0xB40BBE37,
953     /* [253] */ 0xC30C8EA1,
954     /* [254] */ 0x5A05DF1B,
955     /* [255] */ 0x2D02EF8D
956     };
957    
958     //It is known that the XOR of all of the table values above is 0,
959     //and that the sum is 0xFFFFFF80. This is used to check the table
960     //for corruption on demand.
961     #define CRCHASHFUNCS_CRC32TABLE_XOR (0x00000000)
962     #define CRCHASHFUNCS_CRC32TABLE_SUM (0xFFFFFF80)
963    
964    
965     //Rotates an unsigned int left with wraparound.
966     static unsigned CRCHASHFUNCS_Crc32RotateLeftWithWrap(unsigned arg)
967     {
968     if (arg & 0x80000000)
969     {
970     arg <<= 1;
971     arg |= (unsigned)1;
972     }
973     else
974     {
975     arg <<= 1;
976     arg &= 0xFFFFFFFE;
977     }
978    
979     return(arg);
980     }
981    
982    
983     //Appears to swap the bits in a data value, bit 0 for bit 7, bit 1
984     //for bit 6, etc. Obtained from the Internet (Richard A. Ellingson).
985     static unsigned CRCHASHFUNCS_Crc32Reflect(unsigned ref,
986     unsigned char ch)
987     {
988     unsigned i;
989     unsigned value;
990    
991     value = 0;
992    
993     for (i=1; i<((unsigned)(ch+1)); i++)
994     {
995     if (ref & 1)
996     {
997     value |= (1 << (ch-i));
998     }
999     ref >>= 1;
1000     }
1001    
1002     return(value);
1003     }
1004    
1005    
1006     //Returns !=0 if the internal table is alright.
1007     int CRCHASHFUNCS_Crc32TableCheck(void)
1008     {
1009     int i;
1010     unsigned xor_val;
1011     unsigned sum_val;
1012    
1013     xor_val = sum_val = 0;
1014    
1015     for (i=0; i<256; i++)
1016     {
1017     xor_val ^= CRCHASHFUNCS_crc32tab[i];
1018     sum_val += CRCHASHFUNCS_crc32tab[i];
1019     }
1020    
1021     return((xor_val == CRCHASHFUNCS_CRC32TABLE_XOR) &&
1022     (sum_val == CRCHASHFUNCS_CRC32TABLE_SUM));
1023     }
1024    
1025    
1026     //Initializes a CRC state struct. This will be added to, the CRC will be
1027     //extracted, and the data structure will finally be closed.
1028     void CRCHASHFUNCS_Crc32StateStructOpen(struct CRCHASHFUNCS_Crc32StateStruct *arg)
1029     {
1030     arg->crc = 0xFFFFFFFF;
1031     }
1032    
1033    
1034     //Adds data to the data structure.
1035     void CRCHASHFUNCS_Crc32StateStructAddData(struct CRCHASHFUNCS_Crc32StateStruct *arg,
1036     void *data,
1037     unsigned len)
1038     {
1039     assert(arg != NULL);
1040     assert(data != NULL);
1041    
1042     while (len--)
1043     {
1044     arg->crc = (arg->crc >> 8) ^ CRCHASHFUNCS_crc32tab[((arg->crc & 0xFF) ^ *((unsigned char *)data)) & 0xFF];
1045     data = (unsigned char *)data + 1;
1046     }
1047     }
1048    
1049    
1050     unsigned CRCHASHFUNCS_Crc32Extract(struct CRCHASHFUNCS_Crc32StateStruct *arg)
1051     {
1052     assert(arg != NULL);
1053    
1054     return(arg->crc ^ 0xFFFFFFFF);
1055     }
1056    
1057    
1058     void CRCHASHFUNCS_Crc32StateStructClose(struct CRCHASHFUNCS_Crc32StateStruct *arg)
1059     {
1060     assert(arg != NULL);
1061    
1062     //Do nothing at this time.
1063     }
1064    
1065    
1066     //Returns version control string for file.
1067     //
1068     const char *CRCHASHFUNCS_cvcinfo(void)
1069     {
1070     return ("$Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/c_datd/crchashfuncs.c,v 1.3 2001/07/26 21:41:21 dtashley Exp $");
1071     }
1072    
1073    
1074     //Returns version control string for associated .H file.
1075     //
1076     const char *CRCHASHFUNCS_hvcinfo(void)
1077     {
1078     return (CRCHASHFUNCS_H_VERSION);
1079     }
1080    
1081    
1082     // $Log: crchashfuncs.c,v $
1083     // Revision 1.3 2001/07/26 21:41:21 dtashley
1084     // Completion of CRC32 utility, and the CRCHASHFUNCS module.
1085     //
1086     // Revision 1.2 2001/07/26 05:01:49 dtashley
1087     // Keyword expansion corrected.
1088     //
1089     // End of CRCHASHFUNCS.C.

dashley@gmail.com
ViewVC Help
Powered by ViewVC 1.1.25