/* cactiSine - A little cacti data source. Called by cacti every 5 minutes. Returns a sine wave over time. */ #include "common.h" #include "linefile.h" #include "hash.h" #include "options.h" #include void usage() /* Explain usage and exit. */ { errAbort( "cactiSine - A little cacti data source. Called by cacti every 5 minutes. Returns a sine wave over time\n" "usage:\n" " cactiSine XXX\n" "options:\n" " -xxx=XXX\n" ); } static struct optionSpec options[] = { {NULL, 0}, }; void cactiSine(char *XXX) /* cactiSine - A little cacti data source. Called by cacti every 5 minutes. Returns a sine wave over time. */ { double seconds = time(NULL); double hours = seconds/3600; double radians = hours * 2 * 3.14; printf("sin: %4.2f\n", sin(radians)*100); printf("cos: %4.2f\n", cos(radians)*100); } int main(int argc, char *argv[]) /* Process command line. */ { optionInit(&argc, argv, options); if (argc != 2) usage(); cactiSine(argv[1]); return 0; }