summaryrefslogtreecommitdiff
path: root/support/dktools/dk4maasz.ctr
blob: 52c4a5e60c22fd2b2c17c1924e35c1f69742d94f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
%%	options

copyright owner	=	Dirk Krause
copyright year	=	2015-xxxx
SPDX-License-Identifier:	BSD-3-Clause


%%	header

/**	@file
	Arithmetic operations on size_t.
	
	CRT on Windows: Optional.
*/

#ifndef DK4CONF_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4conf.h"
#else
#include <dktools-4/dk4conf.h>
#endif
#endif

#ifndef DK4TYPES_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4types.h"
#else
#include <dktools-4/dk4types.h>
#endif
#endif

#ifndef DK4ERROR_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4error.h"
#else
#include <dktools-4/dk4error.h>
#endif
#endif



#ifdef __cplusplus
extern "C" {
#endif

/**	Addition of size_t values.
	@param	a	Left operand.
	@param	b	Right operand.
	@param	erp	Error report, may be NULL.
	@return	Result.
*/
size_t
dk4ma_size_t_add(size_t a, size_t b, dk4_er_t *erp);

/**	Difference of size_t values.
	@param	a	Left operand.
	@param	b	Right operand.
	@param	erp	Error report, may be NULL.
	@return	Result.
*/
size_t
dk4ma_size_t_sub(size_t a, size_t b, dk4_er_t *erp);

/**	Multiplication of size_t values.
	@param	a	Left operand.
	@param	b	Right operand.
	@param	erp	Error report, may be NULL.
	@return	Result.
*/
size_t
dk4ma_size_t_mul(size_t a, size_t b, dk4_er_t *erp);

/**	Convert dk4_um_t value to size_t.
	@param	u	Value to convert.
	@param	erp	Error report, may be NULL.
	@return	Conversion result.

	Error codes: DK4_E_MATH_OVERFLOW.
*/
size_t
dk4ma_size_t_from(dk4_um_t u, dk4_er_t *erp);

/**	Convert double to signed char.
	@param	d	Value to convert.
	@param	erp	Error report, may be NULL.
	@return	Conversion result.

	Error codes: DK4_E_OVERFLOW.
*/
size_t
dk4ma_size_t_from_double(double d, dk4_er_t *erp);

#ifdef __cplusplus
}
#endif

%%	module

#include "dk4conf.h"
#include "dk4types.h"

#if DK4_HAVE_LIMITS_H
#ifndef LIMITS_H_INCLUDED
#include <limits.h>
#define LIMITS_H_INCLUDED 1
#endif
#endif
#if DK4_HAVE_STDINT_H
#ifndef STDINT_H_INCLUDED
#if defined(__cplusplus) && (!defined(__STDC_LIMIT_MACROS))
#define __STDC_LIMIT_MACROS 1
#endif
#if defined(__cplusplus) && (!defined(__STDC_CONSTANT_MACROS))
#define __STDC_CONSTANT_MACROS 1
#endif
#include <stdint.h>
#define STDINT_H_INCLUDED 1
#endif
#endif

#include "dk4error.h"
#include "dk4maasz.h"
#include "dk4error.h"
#include "dk4numco.h"



size_t
dk4ma_size_t_add(size_t a, size_t b, dk4_er_t *erp)
{
  if ((SIZE_MAX - b) < a) {
    dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
  }
  return (a + b);
}



size_t
dk4ma_size_t_sub(size_t a, size_t b, dk4_er_t *erp)
{
  if (b > a) {
    dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
  }
  return (a - b);
}



size_t
dk4ma_size_t_mul(size_t a, size_t b, dk4_er_t *erp)
{
  if ((0 < a) && (0 < b)) {
    if ((SIZE_MAX / a) < b) {
      dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
    }
  }
  return (a * b);
}



size_t
dk4ma_size_t_from(dk4_um_t u, dk4_er_t *erp)
{
	if ((dk4_um_t)(SIZE_MAX) < u) {
		dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
	}
	return ((size_t)u);
}



size_t
dk4ma_size_t_from_double(double d, dk4_er_t *erp)
{
	size_t	 back	= 0;

	if ((double)(SIZE_MAX) < d) {
		dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
		back = SIZE_MAX;
	}
	else {
		if (0.0 > d) {
			dk4error_set_simple_error_code(erp,DK4_E_MATH_OVERFLOW);
		}
		else {
			back = (size_t)d;
		}
	}
	return back;
}