diff options
author | Anton Khirnov <anton@khirnov.net> | 2017-11-16 13:11:07 +0100 |
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committer | Anton Khirnov <anton@khirnov.net> | 2017-11-19 16:30:14 +0100 |
commit | 0007a0b0c11fa7c12b228883453368f105a4324b (patch) | |
tree | a5ac8016c58c13668bf87931dd921bea933cf07f /common.h |
Initial commit.
The following code is present:
* the basis API
* the BiCGSTAB solver
* the pseudospectral linear system solver
* helper APIs:
- threadpool
- logging
- cpuid
Diffstat (limited to 'common.h')
-rw-r--r-- | common.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/common.h b/common.h new file mode 100644 index 0000000..16dd7ef --- /dev/null +++ b/common.h @@ -0,0 +1,42 @@ +/* + * Copyright 2017 Anton Khirnov <anton@khirnov.net> + * + * This program 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 of the License, or + * (at your option) any later version. + * + * This program 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. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef TEUKOLSKY_DATA_COMMON_H +#define TEUKOLSKY_DATA_COMMON_H + +#define SQR(x) ((x) * (x)) +#define SGN(x) ((x) >= 0.0 ? 1.0 : -1.0) +#define MAX(x, y) ((x) > (y) ? (x) : (y)) +#define MIN(x, y) ((x) > (y) ? (y) : (x)) +#define ARRAY_ELEMS(arr) (sizeof(arr) / sizeof(*arr)) + +/* + * small number to avoid r=0 singularities + */ +#define EPS 1E-08 + +#include <stdlib.h> +#include <stdint.h> +#include <sys/time.h> +static inline int64_t gettime(void) +{ + struct timeval tv; + gettimeofday(&tv, NULL); + return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec; +} + +#endif /* TEUKOLSKY_DATA_COMMON_H */ |