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-rw-r--r--src/timer.c73
1 files changed, 0 insertions, 73 deletions
diff --git a/src/timer.c b/src/timer.c
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-/**
- * @file timer.c
- * @author Gertjan van den Burg
- * @date January, 2014
- * @brief Utility functions relating to time
- *
- * @details
- * This file contains a simple function for calculating the time in seconds
- * elapsed between two clock() calls. It also contains a function for
- * generating a string of the current time, used in writing output files.
- */
-
-#include <time.h>
-
-#include "timer.h"
-
-/**
- * @brief Calculate the time between two clocks
- *
- * @param[in] s_time starting time
- * @param[in] e_time end time
- * @returns time elapsed in seconds
- */
-double elapsed_time(clock_t s_time, clock_t e_time)
-{
- return ((double) (e_time - s_time))/((double) CLOCKS_PER_SEC);
-}
-
-/**
- * @brief Get time string with UTC offset
- *
- * @details
- * Create a string for the current system time. Include an offset of UTC for
- * consistency. The format of the generated string is "DDD MMM D HH:MM:SS
- * YYYY (UTC +HH:MM)", e.g. "Fri Aug 9, 12:34:56 2013 (UTC +02:00)".
- *
- * @param[in,out] buffer allocated string buffer, on exit contains
- * formatted string
- *
- */
-void get_time_string(char *buffer)
-{
- int diff, hours, minutes;
- char timestr[MAX_LINE_LENGTH];
- time_t current_time, lt, gt;
- struct tm *lclt;
-
- // get current time (in epoch)
- current_time = time(NULL);
- if (current_time == ((time_t)-1)) {
- fprintf(stderr, "Failed to compute the current time.\n");
- return;
- }
-
- // convert time to local time and create a string
- lclt = localtime(&current_time);
- strftime(timestr, MAX_LINE_LENGTH, "%c", lclt);
- if (timestr == NULL) {
- fprintf(stderr, "Failed to convert time to string.\n");
- return;
- }
-
- // calculate the UTC offset including DST
- lt = mktime(localtime(&current_time));
- gt = mktime(gmtime(&current_time));
- diff = -difftime(gt, lt);
- hours = (diff/3600);
- minutes = (diff%3600)/60;
- if (lclt->tm_isdst == 1)
- hours++;
-
- sprintf(buffer, "%s (UTC %+03i:%02i)", timestr, hours, minutes);
-}