Differences

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--- c [2009/08/13 09:46] – tkbletsc
+++ c [2009/08/13 09:51] (current) – tkbletsc
@@ Line 1: / Line 1: @@
-getopt
+GO TO THE C [[c:index]].
-<code=c>
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#define die(...) { fprintf(stderr, __VA_ARGS__); exit(1); }
-#define pdie(s) { perror(s); exit(1); }
-int main (int argc, char** argv) {
-	int o;
-	int opt_a;
-	char* opt_c;
-	while ((o = getopt (argc, argv, "abc:")) != -1) {
-		switch (o) {
-		case 'a':
-			opt_a = 1;
-			printf("a=yes\n");
-			break;
-		case 'c':
-			opt_c = optarg;
-			printf("c='%s'\n",opt_c);
-			break;
-		case '?':
-			exit(1);
-		}
-	}
-	argc -= optind; argv += optind; // throw away option arguments
-}
-char* timestamp() {
-	static char buf[64];
-	struct tm t;
-	time_t now = time(NULL);
-	localtime_r(&now,&t);
-	sprintf(buf,"%04d%02d%02d-%02d%02d%02d",t.tm_year+1900,t.tm_mon+1,t.tm_mday,t.tm_hour,t.tm_min,t.tm_sec);
-	return buf;
-}
-/**
- * Returns the number of seconds since the epoch as a double-precision
- * float with microsecond resolution.
- *
- * @return Time since first call to this function
- */
-double getCurrentTime() {
-	double t;
-	struct timeval tstr;
-	if (gettimeofday(&tstr, NULL) < 0) {
-		fprintf(stderr,"gettimeofday failed\n");
-		exit(-1);
-	}
-	t=((tstr.tv_sec + tstr.tv_usec/(double)1000000));
-	return t;
-}
-long long get_usec() {
-	struct timeval tv;
-	gettimeofday(&tv,NULL);
-	return tv.tv_sec*1000000+tv.tv_usec;
-}
-</code>