2018/20180707_cgi_web_tools_aux_exe/auxfuncs.c

//$Header$
//********************************************************************************
//Copyright (c) 2003, 2018 David T. Ashley.
//********************************************************************************
//This file is part of "arith_large_cgi", a program that is designed to be
//invoked by a PHP script as part of serving a web page that performs
//calculations involving large integers.  (A secondary compiled program is
//used because a compiled program can perform certain  calculation-intensive
//tasks far more efficiently than a PHP script.)  This program is provided by
//David T. Ashley (dashley@gmail.com) under the MIT License (reproduced
//immediately below).
//********************************************************************************
//Permission is hereby granted, free of charge, to any person obtaining a copy
//of this software and associated documentation files (the "Software"), to deal
//in the Software without restriction, including without limitation the rights
//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//copies of the Software, and to permit persons to whom the Software is
//furnished to do so, subject to the following conditions:
//
//The above copyright notice and this permission notice shall be included in all
//copies or substantial portions of the Software.
//
//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//SOFTWARE.
//********************************************************************************
//
#define MODULE_AUXFUNCS

#include <assert.h>
#include <ctype.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <time.h>

#include "auxfuncs.h"


/******************************************************************/
/***  CHARACTER CLASSIFICATION FUNCTIONS   ************************/
/******************************************************************/
int AUXFUNCS_is_digit(char c)
   {
   if ((c >= '0') && (c <= '9'))
      return(1);
   else
      return(0);
   }

int AUXFUNCS_digit_to_val(char digit)
{
  switch (digit)
    {
    case '0':  return(0);
      break;
    case '1':  return(1);
      break;
    case '2':  return(2);
      break;
    case '3':  return(3);
      break;
    case '4':  return(4);
      break;
    case '5':  return(5);
      break;
    case '6':  return(6);
      break;
    case '7':  return(7);
      break;
    case '8':  return(8);
      break;
    case '9':  return(9);
      break;
    default:   return(-1);
      break;
    }
}

/******************************************************************/
/***  INTEGER SIZE_T FUNCTIONS             ************************/
/******************************************************************/
size_t AUXFUNCS_size_t_min(size_t a, size_t b)
   {
   if (a < b)
      return(a);
   else
      return(b);
   }

size_t AUXFUNCS_size_t_max(size_t a, size_t b)
   {
   if (a > b)
      return(a);
   else
      return(b);
   }


/******************************************************************/
/***  CONTRACTING STRING FUNCTIONS  *******************************/
/******************************************************************/
void AUXFUNCS_remove_non_digits(char *s)
   {
   char *src;
   char *dst;

   src = s;
   dst = s;

   while(*src)
      {
      if (AUXFUNCS_is_digit(*src))
         {
         *dst = *src;
         dst++;
         }
      src++;
      }

   *dst = 0;
   }

void AUXFUNCS_remove_leading_zeros(char *s)
   {
   char *src;
   char *dst;

   src = s;
   dst = s;

   while((*src) && (*src == '0'))
      {
      src++;
      }

   while(*src)
      {
      *dst = *src;
      src++;
      dst++;
      }

   *dst = 0;
   }


/******************************************************************/
/***  VERSION CONTROL IDENTITY FUNCTIONS   ************************/
/******************************************************************/
const char *AUXFUNCS_cvcinfo(void)
   {
   return("$Header$");
   }

const char *AUXFUNCS_hvcinfo(void)
   {
   return(AUXFUNCS_H_VERSION);
   }

//********************************************************************************
// End of AUXFUNCS.C.
//********************************************************************************
1	//$Header$
2	//********************************************************************************
3	//Copyright (c) 2003, 2018 David T. Ashley.
4	//********************************************************************************
5	//This file is part of "arith_large_cgi", a program that is designed to be
6	//invoked by a PHP script as part of serving a web page that performs
7	//calculations involving large integers. (A secondary compiled program is
8	//used because a compiled program can perform certain calculation-intensive
9	//tasks far more efficiently than a PHP script.) This program is provided by
10	//David T. Ashley (dashley@gmail.com) under the MIT License (reproduced
11	//immediately below).
12	//********************************************************************************
13	//Permission is hereby granted, free of charge, to any person obtaining a copy
14	//of this software and associated documentation files (the "Software"), to deal
15	//in the Software without restriction, including without limitation the rights
16	//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
17	//copies of the Software, and to permit persons to whom the Software is
18	//furnished to do so, subject to the following conditions:
19	//
20	//The above copyright notice and this permission notice shall be included in all
21	//copies or substantial portions of the Software.
22	//
23	//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
24	//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25	//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
26	//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
27	//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
28	//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29	//SOFTWARE.
30	//********************************************************************************
31	//
32	#define MODULE_AUXFUNCS
33
34	#include <assert.h>
35	#include <ctype.h>
36	#include <stddef.h>
37	#include <stdio.h>
38	#include <string.h>
39	#include <time.h>
40
41	#include "auxfuncs.h"
42
43
44	/******************************************************************/
45	/* CHARACTER CLASSIFICATION FUNCTIONS **********************/
46	/******************************************************************/
47	int AUXFUNCS_is_digit(char c)
48	{
49	if ((c >= '0') && (c <= '9'))
50	return(1);
51	else
52	return(0);
53	}
54
55	int AUXFUNCS_digit_to_val(char digit)
56	{
57	switch (digit)
58	{
59	case '0': return(0);
60	break;
61	case '1': return(1);
62	break;
63	case '2': return(2);
64	break;
65	case '3': return(3);
66	break;
67	case '4': return(4);
68	break;
69	case '5': return(5);
70	break;
71	case '6': return(6);
72	break;
73	case '7': return(7);
74	break;
75	case '8': return(8);
76	break;
77	case '9': return(9);
78	break;
79	default: return(-1);
80	break;
81	}
82	}
83
84	/******************************************************************/
85	/* INTEGER SIZE_T FUNCTIONS **********************/
86	/******************************************************************/
87	size_t AUXFUNCS_size_t_min(size_t a, size_t b)
88	{
89	if (a < b)
90	return(a);
91	else
92	return(b);
93	}
94
95	size_t AUXFUNCS_size_t_max(size_t a, size_t b)
96	{
97	if (a > b)
98	return(a);
99	else
100	return(b);
101	}
102
103
104	/******************************************************************/
105	/* CONTRACTING STRING FUNCTIONS *****************************/
106	/******************************************************************/
107	void AUXFUNCS_remove_non_digits(char *s)
108	{
109	char *src;
110	char *dst;
111
112	src = s;
113	dst = s;
114
115	while(*src)
116	{
117	if (AUXFUNCS_is_digit(*src))
118	{
119	dst = src;
120	dst++;
121	}
122	src++;
123	}
124
125	*dst = 0;
126	}
127
128	void AUXFUNCS_remove_leading_zeros(char *s)
129	{
130	char *src;
131	char *dst;
132
133	src = s;
134	dst = s;
135
136	while((src) && (src == '0'))
137	{
138	src++;
139	}
140
141	while(*src)
142	{
143	dst = src;
144	src++;
145	dst++;
146	}
147
148	*dst = 0;
149	}
150
151
152	/******************************************************************/
153	/* VERSION CONTROL IDENTITY FUNCTIONS **********************/
154	/******************************************************************/
155	const char *AUXFUNCS_cvcinfo(void)
156	{
157	return("$Header$");
158	}
159
160	const char *AUXFUNCS_hvcinfo(void)
161	{
162	return(AUXFUNCS_H_VERSION);
163	}
164
165	//********************************************************************************
166	// End of AUXFUNCS.C.
167	//********************************************************************************