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/* Copyright (c) 2019, Anthony Latorre <tlatorre at uchicago>
*
* 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 <https://www.gnu.org/licenses/>.
*/
#ifndef VECTOR_H
#define VECTOR_H
#include <math.h>
#define DOT(a,b) ((a)[0]*(b)[0] + (a)[1]*(b)[1] + (a)[2]*(b)[2])
#define NORM(a) (sqrt(DOT((a),(a))))
#define COPY(a,b) \
do { \
(a)[0] = (b)[0]; \
(a)[1] = (b)[1]; \
(a)[2] = (b)[2]; \
} while (0)
#define MUL(a,b) \
do { \
(a)[0] *= (b); \
(a)[1] *= (b); \
(a)[2] *= (b); \
} while (0)
#define DIV(a,b) \
do { \
(a)[0] /= (b); \
(a)[1] /= (b); \
(a)[2] /= (b); \
} while (0)
#define ADD(c,a,b) \
do { \
(c)[0] = (a)[0] + (b)[0]; \
(c)[1] = (a)[1] + (b)[1]; \
(c)[2] = (a)[2] + (b)[2]; \
} while (0)
#define SUB(c,a,b) \
do { \
(c)[0] = (a)[0] - (b)[0]; \
(c)[1] = (a)[1] - (b)[1]; \
(c)[2] = (a)[2] - (b)[2]; \
} while (0)
#define CROSS(c,a,b) \
do { \
(c)[0] = (a)[1]*(b)[2] - (a)[2]*(b)[1]; \
(c)[1] = (a)[2]*(b)[0] - (a)[0]*(b)[2]; \
(c)[2] = (a)[0]*(b)[1] - (a)[1]*(b)[0]; \
} while (0)
void normalize(double *a);
void rotate(double *dest, double *v, double *n, double phi);
#endif
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