/[dtapublic]/projs/emts/trunk/src/lib_c/c_datd/intfunc.h
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revision 56 by dashley, Sat Oct 29 01:53:01 2016 UTC revision 71 by dashley, Sat Nov 5 11:07:06 2016 UTC
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1  //$Header$  //$Header$
2  //-------------------------------------------------------------------------------------------------  //-------------------------------------------------------------------------------------------------
3  //This file is part of "David T. Ashley's Shared Source Code", a set of shared components  //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.  //integrated into many of David T. Ashley's projects.
5  //-------------------------------------------------------------------------------------------------  //-------------------------------------------------------------------------------------------------
6  //This source code and any program in which it is compiled/used is provided under the MIT License,  //This source code and any program in which it is compiled/used is provided under the MIT License,
7  //reproduced below.  //reproduced below.
8  //-------------------------------------------------------------------------------------------------  //-------------------------------------------------------------------------------------------------
9  //Permission is hereby granted, free of charge, to any person obtaining a copy of  //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  //this software and associated documentation files(the "Software"), to deal in the
11  //Software without restriction, including without limitation the rights to use,  //Software without restriction, including without limitation the rights to use,
12  //copy, modify, merge, publish, distribute, sublicense, and / or sell copies of the  //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,  //Software, and to permit persons to whom the Software is furnished to do so,
14  //subject to the following conditions :  //subject to the following conditions :
15  //  //
16  //The above copyright notice and this permission notice shall be included in all  //The above copyright notice and this permission notice shall be included in all
17  //copies or substantial portions of the Software.  //copies or substantial portions of the Software.
18  //  //
19  //THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR  //THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20  //IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,  //IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21  //FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE  //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  //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,  //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  //OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
25  //SOFTWARE.  //SOFTWARE.
26  //-------------------------------------------------------------------------------------------------  //-------------------------------------------------------------------------------------------------
27  #ifndef INTFUNC_H_INCLUDED  #ifndef INTFUNC_H_INCLUDED
28     #define INTFUNC_H_INCLUDED     #define INTFUNC_H_INCLUDED
29    
30     #ifdef MODULE_INTFUNC     #ifdef MODULE_INTFUNC
31        #define DECMOD_INTFUNC        #define DECMOD_INTFUNC
32     #else     #else
33        #define DECMOD_INTFUNC extern        #define DECMOD_INTFUNC extern
34     #endif     #endif
35    
36     //Max and min of two integers.     //Max and min of two integers.
37     DECMOD_INTFUNC int INTFUNC_max(int a, int b);     DECMOD_INTFUNC int INTFUNC_max(int a, int b);
38     DECMOD_INTFUNC int INTFUNC_min(int a, int b);     DECMOD_INTFUNC int INTFUNC_min(int a, int b);
39    
40     //Odd and even..     //Odd and even..
41     DECMOD_INTFUNC int INTFUNC_is_even(int arg);     DECMOD_INTFUNC int INTFUNC_is_even(int arg);
42     DECMOD_INTFUNC int INTFUNC_is_odd(int arg);     DECMOD_INTFUNC int INTFUNC_is_odd(int arg);
43    
44     //Power residue 16807 functions.     //Power residue 16807 functions.
45     //     //
46     //Makes the recurrence mapping for the power residue random     //Makes the recurrence mapping for the power residue random
47     //number generator given by \alpha=16,807 and N=2^{31}-1.     //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     //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     //seed, the seed can't go to zero.  This is because
50     //2^{31}-1 is a Mersenne prime, and so multiplying a number     //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     //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.     //of 2^{31}-1, by the fundamental theorem of arithmetic.
53     DECMOD_INTFUNC     DECMOD_INTFUNC
54     unsigned int INTFUNC_rn_power_res_16807_mapping(unsigned int arg_in);     unsigned int INTFUNC_rn_power_res_16807_mapping(unsigned int arg_in);
55    
56     //Version control reporting functions.     //Version control reporting functions.
57     DECMOD_INTFUNC const char *INTFUNC_cvcinfo(void);     DECMOD_INTFUNC const char *INTFUNC_cvcinfo(void);
58     DECMOD_INTFUNC const char *INTFUNC_hvcinfo(void);     DECMOD_INTFUNC const char *INTFUNC_hvcinfo(void);
59     #define INTFUNC_H_VERSION ("$Header$")     #define INTFUNC_H_VERSION ("$Header$")
60  #endif  #endif
61    
62  //End of intfunc.h.  //End of intfunc.h.
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