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//$Header: /home/dashley/cvsrep/e3ft_gpl01/e3ft_gpl01/winprojs/scirfmmon/source/miscfunc.c,v 1.4 2009/01/11 06:47:00 dashley Exp $
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//--------------------------------------------------------------------------------
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//Copyright 2008 David T. Ashley
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//-------------------------------------------------------------------------------------------------
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//This source code and any program in which it is compiled/used is provided under the GNU GENERAL
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//PUBLIC LICENSE, Version 3, full license text below.
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//-------------------------------------------------------------------------------------------------
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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)
|
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//provisionally, unless and until the copyright holder explicitly and
|
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//finally terminates your license, and (b) permanently, if the copyright
|
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//holder fails to notify you of the violation by some reasonable means
|
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//prior to 60 days after the cessation.
|
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//
|
429 |
// Moreover, your license from a particular copyright holder is
|
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//reinstated permanently if the copyright holder notifies you of the
|
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//violation by some reasonable means, this is the first time you have
|
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|
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|
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|
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//
|
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// Termination of your rights under this section does not terminate the
|
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//licenses of parties who have received copies or rights from you under
|
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//this License. If your rights have been terminated and not permanently
|
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//reinstated, you do not qualify to receive new licenses for the same
|
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//material under section 10.
|
441 |
//
|
442 |
// 9. Acceptance Not Required for Having Copies.
|
443 |
//
|
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// You are not required to accept this License in order to receive or
|
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//run a copy of the Program. Ancillary propagation of a covered work
|
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//occurring solely as a consequence of using peer-to-peer transmission
|
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//to receive a copy likewise does not require acceptance. However,
|
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//nothing other than this License grants you permission to propagate or
|
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//modify any covered work. These actions infringe copyright if you do
|
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|
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//covered work, you indicate your acceptance of this License to do so.
|
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//
|
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// 10. Automatic Licensing of Downstream Recipients.
|
454 |
//
|
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// Each time you convey a covered work, the recipient automatically
|
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//receives a license from the original licensors, to run, modify and
|
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//propagate that work, subject to this License. You are not responsible
|
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//for enforcing compliance by third parties with this License.
|
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//
|
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
|
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|
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//transaction who receives a copy of the work also receives whatever
|
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//licenses to the work the party's predecessor in interest had or could
|
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//give under the previous paragraph, plus a right to possession of the
|
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//Corresponding Source of the work from the predecessor in interest, if
|
468 |
//the predecessor has it or can get it with reasonable efforts.
|
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//
|
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// You may not impose any further restrictions on the exercise of the
|
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//rights granted or affirmed under this License. For example, you may
|
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//not impose a license fee, royalty, or other charge for exercise of
|
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//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,
|
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//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
|
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|
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//
|
494 |
// Each contributor grants you a non-exclusive, worldwide, royalty-free
|
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//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.
|
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//
|
499 |
// In the following three paragraphs, a "patent license" is any express
|
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//agreement or commitment, however denominated, not to enforce a patent
|
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//(such as an express permission to practice a patent or covenant not to
|
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//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
|
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//patent against the party.
|
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//
|
506 |
// If you convey a covered work, knowingly relying on a patent license,
|
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|
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|
509 |
//publicly available network server or other readily accessible means,
|
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//then you must either (1) cause the Corresponding Source to be so
|
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//available, or (2) arrange to deprive yourself of the benefit of the
|
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|
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|
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|
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|
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//covered work in a country, or your recipient's use of the covered work
|
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|
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|
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//
|
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// If, pursuant to or in connection with a single transaction or
|
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//arrangement, you convey, or propagate by procuring conveyance of, a
|
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//covered work, and grant a patent license to some of the parties
|
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|
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|
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|
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|
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//
|
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// A patent license is "discriminatory" if it does not include within
|
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//the scope of its coverage, prohibits the exercise of, or is
|
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//conditioned on the non-exercise of one or more of the rights that are
|
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|
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|
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|
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|
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|
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//parties who would receive the covered work from you, a discriminatory
|
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//patent license (a) in connection with copies of the covered work
|
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|
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//for and in connection with specific products or compilations that
|
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//contain the covered work, unless you entered into that arrangement,
|
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//or that patent license was granted, prior to 28 March 2007.
|
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//
|
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// Nothing in this License shall be construed as excluding or limiting
|
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//any implied license or other defenses to infringement that may
|
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//otherwise be available to you under applicable patent law.
|
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//
|
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// 12. No Surrender of Others' Freedom.
|
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//
|
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// If conditions are imposed on you (whether by court order, agreement or
|
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|
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|
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|
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|
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//not convey it at all. For example, if you agree to terms that obligate you
|
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//to collect a royalty for further conveying from those to whom you convey
|
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//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.
|
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//
|
561 |
// Notwithstanding any other provision of this License, you have
|
562 |
//permission to link or combine any covered work with a work licensed
|
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//under version 3 of the GNU Affero General Public License into a single
|
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//combined work, and to convey the resulting work. The terms of this
|
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//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
|
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//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
|
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//the GNU General Public License from time to time. Such new versions will
|
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//be similar in spirit to the present version, but may differ in detail to
|
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//address new problems or concerns.
|
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//
|
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// Each version is given a distinguishing version number. If the
|
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|
579 |
//Public License "or any later version" applies to it, you have the
|
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//option of following the terms and conditions either of that numbered
|
581 |
//version or of any later version published by the Free Software
|
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|
583 |
//GNU General Public License, you may choose any version ever published
|
584 |
//by the Free Software Foundation.
|
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//
|
586 |
// If the Program specifies that a proxy can decide which future
|
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|
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//public statement of acceptance of a version permanently authorizes you
|
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|
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//
|
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// Later license versions may give you additional or different
|
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|
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|
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|
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//
|
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// 15. Disclaimer of Warranty.
|
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//
|
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// THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
|
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|
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|
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//
|
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// 16. Limitation of Liability.
|
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|
609 |
// IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
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|
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|
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|
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//SUCH DAMAGES.
|
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|
619 |
// 17. Interpretation of Sections 15 and 16.
|
620 |
//
|
621 |
// If the disclaimer of warranty and limitation of liability provided
|
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//above cannot be given local legal effect according to their terms,
|
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|
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|
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|
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//
|
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// END OF TERMS AND CONDITIONS
|
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//
|
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 |
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|
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|
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//
|
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// To do so, attach the following notices to the program. It is safest
|
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|
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|
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|
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//
|
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// <one line to give the program's name and a brief idea of what it does.>
|
642 |
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|
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//
|
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|
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|
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|
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|
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|
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|
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|
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|
663 |
// This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
664 |
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|
665 |
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|
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//
|
667 |
//The hypothetical commands `show w' and `show c' should show the appropriate
|
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//parts of the General Public License. Of course, your program's commands
|
669 |
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|
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|
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|
673 |
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|
674 |
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|
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|
676 |
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|
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|
678 |
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|
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 |
//This file is part of scirfmmon.
|
685 |
//
|
686 |
//scirfmmon is free software: you can redistribute it and/or modify
|
687 |
//it under the terms of the GNU General Public License as published by
|
688 |
//the Free Software Foundation, either version 3 of the License, or
|
689 |
//(at your option) any later version.
|
690 |
//
|
691 |
//scirfmmon is distributed in the hope that it will be useful,
|
692 |
//but WITHOUT ANY WARRANTY; without even the implied warranty of
|
693 |
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
694 |
//GNU General Public License for more details.
|
695 |
//
|
696 |
//You should have received a copy of the GNU General Public License
|
697 |
//along with scirfmmon (see the file copying.txt). If not,
|
698 |
//see <http://www.gnu.org/licenses/>.
|
699 |
//--------------------------------------------------------------------------------
|
700 |
#define MODULE_MISCFUNC
|
701 |
|
702 |
#include <assert.h>
|
703 |
#include <limits.h>
|
704 |
#include <stddef.h>
|
705 |
#include <string.h>
|
706 |
|
707 |
#include "miscfunc.h"
|
708 |
|
709 |
|
710 |
int MISCFUNC_timb64_diff_bounded_ms(const struct __timeb64 *in_ref, const struct __timeb64 *in_eval_tgt)
|
711 |
{
|
712 |
long long int in_ref_t_int, in_eval_tgt_t_int;
|
713 |
int in_ref_t_msec, in_eval_tgt_t_msec;
|
714 |
|
715 |
//Extract the integer number of seconds.
|
716 |
in_ref_t_int = in_ref->time;
|
717 |
in_eval_tgt_t_int = in_eval_tgt->time;
|
718 |
|
719 |
//Extract the milliseconds.
|
720 |
in_ref_t_msec = in_ref->millitm;
|
721 |
in_eval_tgt_t_msec = in_eval_tgt->millitm;
|
722 |
|
723 |
//Branch out into three cases. This simplifies my thinking about overflows and so on. Note that
|
724 |
//this function is bound tightly to Microsoft Visual C on a 32-bit platform. This code is not
|
725 |
//portable at all.
|
726 |
//
|
727 |
if (in_eval_tgt_t_int > in_ref_t_int)
|
728 |
{
|
729 |
//The time difference is positive.
|
730 |
long long int diff_isecs;
|
731 |
|
732 |
diff_isecs = in_eval_tgt_t_int - in_ref_t_int;
|
733 |
|
734 |
if (diff_isecs > ((long long int)INT_MAX))
|
735 |
{
|
736 |
//The difference is too large by a factor of at least 1000. Return
|
737 |
//the max.
|
738 |
return(INT_MAX);
|
739 |
}
|
740 |
|
741 |
//If we're here, the difference is bounded to be no more than a factor of 1000 larger.
|
742 |
//Can do the calculations safely.
|
743 |
diff_isecs *= 1000; //Difference is now in milliseconds.
|
744 |
if (in_eval_tgt_t_msec >= in_ref_t_msec)
|
745 |
{
|
746 |
//Simple subtraction.
|
747 |
diff_isecs += (in_eval_tgt_t_msec - in_ref_t_msec);
|
748 |
|
749 |
//We now have the number of milliseconds.
|
750 |
if (diff_isecs > ((long long int)INT_MAX))
|
751 |
return(INT_MAX);
|
752 |
else
|
753 |
return((int)diff_isecs); //Cast to silence compiler warning.
|
754 |
}
|
755 |
else
|
756 |
{
|
757 |
//We have a rollover situation. Since nothing is unsigned,
|
758 |
//can just use the same expressions.
|
759 |
//
|
760 |
//Simple subtraction. The expression will have a negative result, but this is OK.
|
761 |
//Since everything is signed, everything should work.
|
762 |
diff_isecs += (in_eval_tgt_t_msec - in_ref_t_msec);
|
763 |
|
764 |
//We now have the number of milliseconds.
|
765 |
if (diff_isecs > ((long long int)INT_MAX))
|
766 |
return(INT_MAX);
|
767 |
else
|
768 |
return((int)diff_isecs); //Cast to silence compiler warning.
|
769 |
}
|
770 |
}
|
771 |
else if (in_eval_tgt_t_int < in_ref_t_int)
|
772 |
{
|
773 |
//The time difference is negative.
|
774 |
long long int diff_isecs;
|
775 |
|
776 |
diff_isecs = in_eval_tgt_t_int - in_ref_t_int;
|
777 |
|
778 |
if (diff_isecs < ((long long int)INT_MIN))
|
779 |
{
|
780 |
//The difference is too large in magnitude by a factor of at least 1000. Return
|
781 |
//the max.
|
782 |
return(INT_MIN);
|
783 |
}
|
784 |
|
785 |
//If we're here, the magnitude of the difference is bounded to be no more than a factor of 1000 larger.
|
786 |
//Can do the calculations safely.
|
787 |
diff_isecs *= 1000; //Difference is now in milliseconds.
|
788 |
if (in_eval_tgt_t_msec >= in_ref_t_msec)
|
789 |
{
|
790 |
//Simple subtraction.
|
791 |
diff_isecs += (in_eval_tgt_t_msec - in_ref_t_msec);
|
792 |
|
793 |
//We now have the number of milliseconds.
|
794 |
if (diff_isecs < ((long long int)INT_MIN))
|
795 |
return(INT_MIN);
|
796 |
else
|
797 |
return((int)diff_isecs); //Cast to silence compiler warning.
|
798 |
}
|
799 |
else
|
800 |
{
|
801 |
//We have a rollover situation. Since nothing is unsigned,
|
802 |
//can just use the same expressions.
|
803 |
//
|
804 |
//Simple subtraction. The expression will have a negative result, but this is OK.
|
805 |
//Since everything is signed, everything should work.
|
806 |
diff_isecs += (in_eval_tgt_t_msec - in_ref_t_msec);
|
807 |
|
808 |
//We now have the number of milliseconds.
|
809 |
if (diff_isecs < ((long long int)INT_MIN))
|
810 |
return(INT_MIN);
|
811 |
else
|
812 |
return((int)diff_isecs); //Cast to silence compiler warning.
|
813 |
}
|
814 |
}
|
815 |
else
|
816 |
{
|
817 |
//The integer times are equal. It boils down to milliseconds only.
|
818 |
return(in_eval_tgt_t_msec - in_ref_t_msec);
|
819 |
}
|
820 |
}
|
821 |
|
822 |
|
823 |
//Compares the times of two timestamps to see if a<b, a==b, or a>b. Return value of
|
824 |
//-1, 0, or 1 is the same convention as strcmp() and similar functions.
|
825 |
//
|
826 |
int MISCFUNC_timb64_t_cmp(const struct __timeb64 *in_a, const struct __timeb64 *in_b)
|
827 |
{
|
828 |
if (in_a->time < in_b->time)
|
829 |
{
|
830 |
return(-1);
|
831 |
}
|
832 |
else if (in_a->time > in_b->time)
|
833 |
{
|
834 |
return(1);
|
835 |
}
|
836 |
else
|
837 |
{
|
838 |
//Tie on integer seconds. Use milliseconds.
|
839 |
if (in_a->millitm < in_b->millitm)
|
840 |
return(-1);
|
841 |
else if (in_a->millitm > in_b->millitm)
|
842 |
return(-1);
|
843 |
else
|
844 |
return(0);
|
845 |
}
|
846 |
}
|
847 |
|
848 |
|
849 |
const char *MISCFUNC_cvcinfo(void)
|
850 |
{
|
851 |
return("$Header: /home/dashley/cvsrep/e3ft_gpl01/e3ft_gpl01/winprojs/scirfmmon/source/miscfunc.c,v 1.4 2009/01/11 06:47:00 dashley Exp $");
|
852 |
}
|
853 |
|
854 |
|
855 |
const char *MISCFUNC_hvcinfo(void)
|
856 |
{
|
857 |
return(MISCFUNC_H_VERSION);
|
858 |
}
|
859 |
|
860 |
|
861 |
//**************************************************************************
|
862 |
// $Log: miscfunc.c,v $
|
863 |
// Revision 1.4 2009/01/11 06:47:00 dashley
|
864 |
// Edits.
|
865 |
//
|
866 |
// Revision 1.3 2009/01/11 06:11:31 dashley
|
867 |
// Edits.
|
868 |
//
|
869 |
// Revision 1.2 2009/01/11 04:10:46 dashley
|
870 |
// Edits.
|
871 |
//
|
872 |
// Revision 1.1 2009/01/11 02:58:56 dashley
|
873 |
// Initial checkin.
|
874 |
//**************************************************************************
|
875 |
// End of $RCSfile: miscfunc.c,v $.
|