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
|
/* libgcc routines for RL78
Copyright (C) 2005-2014 Free Software Foundation, Inc.
Contributed by Red Hat.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
UINT_TYPE C3(udivmod,NAME_MODE,4) (UINT_TYPE, UINT_TYPE, word_type);
SINT_TYPE C3(__div,NAME_MODE,3) (SINT_TYPE, SINT_TYPE);
SINT_TYPE C3(__mod,NAME_MODE,3) (SINT_TYPE, SINT_TYPE);
UINT_TYPE C3(__udiv,NAME_MODE,3) (UINT_TYPE, UINT_TYPE);
UINT_TYPE C3(__umod,NAME_MODE,3) (UINT_TYPE, UINT_TYPE);
UINT_TYPE
C3(udivmod,NAME_MODE,4) (UINT_TYPE num, UINT_TYPE den, word_type modwanted)
{
UINT_TYPE bit = 1;
UINT_TYPE res = 0;
while (den < num && bit && !(den & (1L << BITS_MINUS_1)))
{
den <<= 1;
bit <<= 1;
}
while (bit)
{
if (num >= den)
{
num -= den;
res |= bit;
}
bit >>= 1;
den >>= 1;
}
if (modwanted)
return num;
return res;
}
SINT_TYPE
C3(__div,NAME_MODE,3) (SINT_TYPE a, SINT_TYPE b)
{
word_type neg = 0;
SINT_TYPE res;
if (a < 0)
{
a = -a;
neg = !neg;
}
if (b < 0)
{
b = -b;
neg = !neg;
}
res = C3(udivmod,NAME_MODE,4) (a, b, 0);
if (neg)
res = -res;
return res;
}
SINT_TYPE
C3(__mod,NAME_MODE,3) (SINT_TYPE a, SINT_TYPE b)
{
word_type neg = 0;
SINT_TYPE res;
if (a < 0)
{
a = -a;
neg = 1;
}
if (b < 0)
b = -b;
res = C3(udivmod,NAME_MODE,4) (a, b, 1);
if (neg)
res = -res;
return res;
}
UINT_TYPE
C3(__udiv,NAME_MODE,3) (UINT_TYPE a, UINT_TYPE b)
{
return C3(udivmod,NAME_MODE,4) (a, b, 0);
}
UINT_TYPE
C3(__umod,NAME_MODE,3) (UINT_TYPE a, UINT_TYPE b)
{
return C3(udivmod,NAME_MODE,4) (a, b, 1);
}
|
