/[dtapublic]/projs/trunk/shared_source/c_datd/intfunc.h
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Annotation of /projs/trunk/shared_source/c_datd/intfunc.h

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Revision 56 - (hide annotations) (download)
Sat Oct 29 01:53:01 2016 UTC (7 years, 8 months ago) by dashley
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License and property (keyword) changes.
1 dashley 56 //$Header$
2 dashley 25 //-------------------------------------------------------------------------------------------------
3 dashley 56 //This file is part of "David T. Ashley's Shared Source Code", a set of shared components
4     //integrated into many of David T. Ashley's projects.
5 dashley 25 //-------------------------------------------------------------------------------------------------
6 dashley 56 //This source code and any program in which it is compiled/used is provided under the MIT License,
7     //reproduced below.
8     //-------------------------------------------------------------------------------------------------
9     //Permission is hereby granted, free of charge, to any person obtaining a copy of
10     //this software and associated documentation files(the "Software"), to deal in the
11     //Software without restriction, including without limitation the rights to use,
12     //copy, modify, merge, publish, distribute, sublicense, and / or sell copies of the
13     //Software, and to permit persons to whom the Software is furnished to do so,
14     //subject to the following conditions :
15 dashley 25 //
16 dashley 56 //The above copyright notice and this permission notice shall be included in all
17     //copies or substantial portions of the Software.
18 dashley 25 //
19 dashley 56 //THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20     //IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21     //FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
22     //AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23     //LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24     //OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
25     //SOFTWARE.
26 dashley 25 //-------------------------------------------------------------------------------------------------
27     #ifndef INTFUNC_H_INCLUDED
28     #define INTFUNC_H_INCLUDED
29    
30     #ifdef MODULE_INTFUNC
31     #define DECMOD_INTFUNC
32     #else
33     #define DECMOD_INTFUNC extern
34     #endif
35    
36     //Max and min of two integers.
37     DECMOD_INTFUNC int INTFUNC_max(int a, int b);
38     DECMOD_INTFUNC int INTFUNC_min(int a, int b);
39    
40     //Odd and even..
41     DECMOD_INTFUNC int INTFUNC_is_even(int arg);
42     DECMOD_INTFUNC int INTFUNC_is_odd(int arg);
43    
44     //Power residue 16807 functions.
45     //
46     //Makes the recurrence mapping for the power residue random
47     //number generator given by \alpha=16,807 and N=2^{31}-1.
48     //One fact that may not be apparent is that with a non-zero
49     //seed, the seed can't go to zero. This is because
50     //2^{31}-1 is a Mersenne prime, and so multiplying a number
51     //less than 2^{31}-1 by 16,807=7^3 can't result in a multiple
52     //of 2^{31}-1, by the fundamental theorem of arithmetic.
53     DECMOD_INTFUNC
54     unsigned int INTFUNC_rn_power_res_16807_mapping(unsigned int arg_in);
55    
56     //Version control reporting functions.
57     DECMOD_INTFUNC const char *INTFUNC_cvcinfo(void);
58     DECMOD_INTFUNC const char *INTFUNC_hvcinfo(void);
59 dashley 56 #define INTFUNC_H_VERSION ("$Header$")
60 dashley 25 #endif
61    
62 dashley 56 //End of intfunc.h.

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