Clean up some minor white space issues in trans-decl.c and trans-expr.c
[official-gcc.git] / libgcc / config / msp430 / msp430-divmod.h
blobd9a84f4c6223e7dde4cc6cbc92ac25f4ffb98f72
1 /* libgcc routines for MSP430
2 Copyright (C) 2005-2016 Free Software Foundation, Inc.
3 Contributed by Red Hat.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published
9 by the Free Software Foundation; either version 3, or (at your
10 option) any later version.
12 GCC is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
17 Under Section 7 of GPL version 3, you are granted additional
18 permissions described in the GCC Runtime Library Exception, version
19 3.1, as published by the Free Software Foundation.
21 You should have received a copy of the GNU General Public License and
22 a copy of the GCC Runtime Library Exception along with this program;
23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24 <http://www.gnu.org/licenses/>. */
26 UINT_TYPE C3(udivmod,NAME_MODE,4) (UINT_TYPE, UINT_TYPE, word_type);
27 SINT_TYPE C3(__div,NAME_MODE,3) (SINT_TYPE, SINT_TYPE);
28 SINT_TYPE C3(__mod,NAME_MODE,3) (SINT_TYPE, SINT_TYPE);
29 UINT_TYPE C3(__udiv,NAME_MODE,3) (UINT_TYPE, UINT_TYPE);
30 UINT_TYPE C3(__umod,NAME_MODE,3) (UINT_TYPE, UINT_TYPE);
32 UINT_TYPE
33 C3(udivmod,NAME_MODE,4) (UINT_TYPE num, UINT_TYPE den, word_type modwanted)
35 UINT_TYPE bit = 1;
36 UINT_TYPE res = 0;
38 while (den < num && bit && !(den & (1L << BITS_MINUS_1)))
40 den <<= 1;
41 bit <<= 1;
43 while (bit)
45 if (num >= den)
47 num -= den;
48 res |= bit;
50 bit >>= 1;
51 den >>= 1;
53 if (modwanted)
54 return num;
55 return res;
58 SINT_TYPE
59 C3(__div,NAME_MODE,3) (SINT_TYPE a, SINT_TYPE b)
61 word_type neg = 0;
62 SINT_TYPE res;
64 if (a < 0)
66 a = -a;
67 neg = !neg;
70 if (b < 0)
72 b = -b;
73 neg = !neg;
76 res = C3(udivmod,NAME_MODE,4) (a, b, 0);
78 if (neg)
79 res = -res;
81 return res;
84 SINT_TYPE
85 C3(__mod,NAME_MODE,3) (SINT_TYPE a, SINT_TYPE b)
87 word_type neg = 0;
88 SINT_TYPE res;
90 if (a < 0)
92 a = -a;
93 neg = 1;
96 if (b < 0)
97 b = -b;
99 res = C3(udivmod,NAME_MODE,4) (a, b, 1);
101 if (neg)
102 res = -res;
104 return res;
107 UINT_TYPE
108 C3(__udiv,NAME_MODE,3) (UINT_TYPE a, UINT_TYPE b)
110 return C3(udivmod,NAME_MODE,4) (a, b, 0);
113 UINT_TYPE
114 C3(__umod,NAME_MODE,3) (UINT_TYPE a, UINT_TYPE b)
116 return C3(udivmod,NAME_MODE,4) (a, b, 1);