1 /* Generate window size/position coordinates for -geometry switches */ 2 3 /* 4 * Copyright (C) 2003-2006 IBM 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of the 9 * License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, but 12 * WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 19 * 02111-1307, USA. 20 */ 21 22 #include <unistd.h> 23 #include <limits.h> 24 #include <fcntl.h> 25 #include <stdio.h> 26 #include <stdlib.h> 27 28 int seed_random(void) 29 { 30 int fp; 31 long seed; 32 33 fp = open("/dev/urandom", O_RDONLY); 34 if (fp < 0) { 35 perror("/dev/urandom"); 36 return 0; 37 } 38 39 if (read(fp, &seed, sizeof(seed)) != sizeof(seed)) { 40 perror("read random seed"); 41 return 0; 42 } 43 44 close(fp); 45 srand(seed); 46 47 return 1; 48 } 49 50 int main(int argc, char *argv[]) 51 { 52 unsigned long xmax, ymax; 53 unsigned long x, y; 54 55 if (argc < 3) { 56 fprintf(stderr, "Usage: %s xmax ymax\n", argv[0]); 57 return 2; 58 } 59 60 xmax = atoi(argv[1]); 61 ymax = atoi(argv[2]); 62 63 if (!seed_random()) { 64 return 1; 65 } 66 67 x = 1 + (unsigned long)((float)xmax * (rand() / (RAND_MAX + 1.0f))); 68 y = 1 + (unsigned long)((float)ymax * (rand() / (RAND_MAX + 1.0f))); 69 70 printf("+%lu+%lu\n", x, y); 71 72 return 0; 73 } 74
