pdslab/day2/common.h

/*
 * Copyright (C) 2020, 2019, 2018, 2017 Girish M
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 * 
 */
 #ifndef COMMON_H
#define COMMON_H

#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#define UNDEF -1
#define BUF_LEN 256
#define INFTY 1000000
#define EPS 0.0001

#ifndef MAX
#define MAX(a,b) (((a)>(b))?(a):(b))
#define MIN(a,b) (((a)<(b))?(a):(b))
#endif

#ifndef SQR
#define SQR(x) ((x) * (x))
#endif

#define ERR_MESG(x) { perror(x); return -1; }
#if DEBUG
//#ifdef __GNUC__
#define dprintf(format, ...) fprintf(stderr, format, ## __VA_ARGS__)
#else
#define dprintf(format, ...)
#endif

#define Malloc(n,type) (type *) malloc( (unsigned) ((n)*sizeof(type)))
#define Realloc(loc,n,type) (type *) realloc( (char *)(loc), \
                                              (unsigned) ((n)*sizeof(type)))

#define matrix_alloc(mat,rows,cols,type) {                        \
    int ii;                                                       \
    type *temp;                                                   \
                                                                  \
    if (NULL == (temp = (type *) malloc(rows*cols*sizeof(type))) || \
        NULL == (mat = (type **) malloc(rows * sizeof(type *))))  \
        ERR_MESG("Out of memory");                                \
    for (ii = 0; ii < rows; temp += cols, ii++)                   \
        mat[ii] = temp;                                           \
  }

#define matrix_free(mat) {                      \
    free(mat[0]);                               \
    free(mat);                                  \
  }

#endif