summaryrefslogtreecommitdiff
path: root/support/dktools/dk4maaul.c
blob: acd21ed0dce227e6065315c4be53324a4efc2314 (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
/*
Copyright (C) 2015-2020, Dirk Krause
SPDX-License-Identifier: BSD-3-Clause
*/

/*
	WARNING: This file was generated by the dkct program (see
	http://dktools.sourceforge.net/ for details).
	Changes you make here will be lost if dkct is run again!
	You should modify the original source and run dkct on it.
	Original source: dk4maaul.ctr
*/

/**	@file dk4maaul.c The dk4maaul module.
*/


#line 122 "dk4maaul.ctr"

#include "dk4conf.h"
#include "dk4types.h"
#include "dk4error.h"
#include "dk4numco.h"
#include "dk4maaul.h"





#line 132 "dk4maaul.ctr"



unsigned long
dk4ma_ulong_add(unsigned long a, unsigned long b, dk4_er_t *erp)
{
  

#line 139 "dk4maaul.ctr"
  

#line 140 "dk4maaul.ctr"
  

#line 141 "dk4maaul.ctr"
  

#line 142 "dk4maaul.ctr"
  if ((ULONG_MAX - a) < b) {	

#line 143 "dk4maaul.ctr"
    dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
  }
  

#line 146 "dk4maaul.ctr"
  return (a + b);
}



unsigned long
dk4ma_ulong_sub(unsigned long a, unsigned long b, dk4_er_t *erp)
{
  if (b > a) {
    dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
  }
  return (a - b);
}



unsigned long
dk4ma_ulong_mul(unsigned long a, unsigned long b, dk4_er_t *erp)
{
  if (0UL < a) {
    if ((ULONG_MAX / a) < b) {
      dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
    }
  }
  return (a * b);
}



unsigned long
dk4ma_ulong_div(unsigned long a, unsigned long b, dk4_er_t *erp)
{
  if (0UL < b) {
    return (a / b);
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_MATH_DIVZERO);
    return (unsigned long)(ULONG_MAX);
  }
}



unsigned long
dk4ma_ulong_from(dk4_um_t u, dk4_er_t *erp)
{
	if ((dk4_um_t)(ULONG_MAX) < u) {
		dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
	}
	return ((unsigned long)u);
}



unsigned long
dk4ma_ulong_from_double(double d, dk4_er_t *erp)
{
	unsigned long	back	= 0UL;
	if ((double)(ULONG_MAX) < d) {
		dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
		back = ULONG_MAX;
	}
	else {
		if (0.0 > d) {
			dk4error_set_simple_error_code(erp,DK4_E_MATH_OVERFLOW);
		}
		else {
			back = (unsigned long)d;
		}
	}
	return  back;
}