Commit f67ee680669fdade639d540df326f48176a3d0f3
1 parent
bec6f387
add implementation of euclidean algorithm and compile with REENTRANT and pthread…
… as this code is ment to be used within threads ... also there is no other thread awareness in it
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8 changed files
with
103 additions
and
3 deletions
include/tr/math.h
0 → 100644
1 | +/** | |
2 | + * \file | |
3 | + * Common reusable definitions. | |
4 | + * | |
5 | + * \todo All public symbols need to be prefixed to make name clashes | |
6 | + * more unlikely. | |
7 | + * | |
8 | + * \author Georg Hopp | |
9 | + * | |
10 | + * \copyright | |
11 | + * Copyright © 2014 Georg Hopp | |
12 | + * | |
13 | + * This program is free software: you can redistribute it and/or modify | |
14 | + * it under the terms of the GNU General Public License as published by | |
15 | + * the Free Software Foundation, either version 3 of the License, or | |
16 | + * (at your option) any later version. | |
17 | + * | |
18 | + * This program is distributed in the hope that it will be useful, | |
19 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | + * GNU General Public License for more details. | |
22 | + * | |
23 | + * You should have received a copy of the GNU General Public License | |
24 | + * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
25 | + */ | |
26 | + | |
27 | +#ifndef __TR_MATH_H__ | |
28 | +#define __TR_MATH_H__ | |
29 | + | |
30 | +#include "tr/commons.h" | |
31 | + | |
32 | +inline | |
33 | +long | |
34 | +TR_euklidGcd(register long val1, register long val2) | |
35 | +{ | |
36 | + register long mod; | |
37 | + | |
38 | + if(val2 > val1) SWAP_XOR(val1, val2); | |
39 | + | |
40 | + mod = val1 % val2; | |
41 | + while (mod != 0) { | |
42 | + val1 = val2; | |
43 | + val2 = mod; | |
44 | + mod = val1 % val2; | |
45 | + } | |
46 | + | |
47 | + return val2; | |
48 | +} | |
49 | + | |
50 | +inline | |
51 | +long | |
52 | +TR_lcm(register long val1, register long val2) | |
53 | +{ | |
54 | + return val1 * val2 / TR_euklidGcd(val1, val2); | |
55 | +} | |
56 | + | |
57 | +#endif // __TR_MATH_H__ | |
58 | + | |
59 | +// vim: set ts=4 sw=4: | ... | ... |
1 | 1 | ACLOCAL_AMFLAGS = -I m4 |
2 | 2 | AUTOMAKE_OPTIONS = subdir-objects |
3 | 3 | |
4 | -AM_CFLAGS += -I../include/ | |
4 | +AM_CFLAGS += -I../include/ -std=c99 -DREENTRANT -lpthread | |
5 | +AM_LDFLAGS += -lpthread | |
5 | 6 | |
6 | 7 | TR_CLASS = memory.c \ |
7 | 8 | interface.c \ |
... | ... | @@ -12,6 +13,7 @@ TR_CLASS = memory.c \ |
12 | 13 | print_trace.c \ |
13 | 14 | stderr.c \ |
14 | 15 | syslog.c \ |
16 | + math.c \ | |
15 | 17 | sized_data.c \ |
16 | 18 | sized_data_set_data.c \ |
17 | 19 | i_class.c \ |
... | ... | @@ -24,6 +26,6 @@ TR_CLASS = memory.c \ |
24 | 26 | lib_LTLIBRARIES = libtrbase.la |
25 | 27 | |
26 | 28 | libtrbase_la_SOURCES = $(TR_CLASS) |
27 | -libtrbase_la_CFLAGS = $(AM_CFLAGS) -lpthread | |
28 | -libtrbase_la_LIBADD = | |
29 | +libtrbase_la_CFLAGS = $(AM_CFLAGS) | |
30 | +libtrbase_la_LIBADD = $(AM_LDFLAGS) | |
29 | 31 | libtrbase_la_LDFLAGS = -version-info 1:0:1 | ... | ... |
src/math.c
0 → 100644
1 | +/** | |
2 | + * \file | |
3 | + * Common reusable definitions. | |
4 | + * | |
5 | + * \todo All public symbols need to be prefixed to make name clashes | |
6 | + * more unlikely. | |
7 | + * | |
8 | + * \author Georg Hopp | |
9 | + * | |
10 | + * \copyright | |
11 | + * Copyright © 2014 Georg Hopp | |
12 | + * | |
13 | + * This program is free software: you can redistribute it and/or modify | |
14 | + * it under the terms of the GNU General Public License as published by | |
15 | + * the Free Software Foundation, either version 3 of the License, or | |
16 | + * (at your option) any later version. | |
17 | + * | |
18 | + * This program is distributed in the hope that it will be useful, | |
19 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | + * GNU General Public License for more details. | |
22 | + * | |
23 | + * You should have received a copy of the GNU General Public License | |
24 | + * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
25 | + */ | |
26 | + | |
27 | +#include "tr/math.h" | |
28 | + | |
29 | +extern inline long TR_euklidGcd(register long, register long); | |
30 | +extern inline long TR_lcm(register long, register long); | ... | ... |
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