07-26-2011
If there were a faster way to do strftime, strftime would probably be doing it... (As an aside, "C++" doesn't usually mean "faster".)
If it needs to be done thousands of times per second, why bother with strftime, no human can read it that fast, just store time in microseconds.
Last edited by Corona688; 07-26-2011 at 02:45 PM..
7 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Strange behaviour of the strftime() function from gawk (3.1.5):
$ awk 'BEGIN{print strftime("%T", 3600)}'
> 02:00:00
$ awk 'BEGIN{print strftime("%T", 0)}'
> 01:00:00
Obviously something with DST but I can not figure out why? To me 3600 epoch seconds remains 01:00, DST or not.
From... (2 Replies)
Discussion started by: ripat
2 Replies
2. Shell Programming and Scripting
Hi Everyone
i have a perl file below, one of the line is convert the pcho time to human readable format.
$value=`awk 'BEGIN{print strftime("%c",1273236600)}' | tr -d '\n'`;
if image, if i have lots of pcho time value in a file, if i use this awk, strftime, then tr -d to remove the \n,... (2 Replies)
Discussion started by: jimmy_y
2 Replies
3. Programming
Hi,
I am facing one strange situation while using strftime() to get current date and time in C.
it leaks memory with %T
strftime(L_StrDate,30,"%d-%b-%C%y %T", localtime((time_t *)&tv.tv_sec)) ;
and when i use another option then no memory leak like
strftime(L_StrDate,30,"%d-%b-%C%y ... (3 Replies)
Discussion started by: apskaushik
3 Replies
4. Programming
Hello all,
I have the following code that seems to be misbehaving depending on the timezone setting (TZ Environment variable). It gives the correct value when TZ is in POSIX format and the wrong value when in OLSON format.
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include... (6 Replies)
Discussion started by: biju64
6 Replies
5. Shell Programming and Scripting
cat file
41285.000034722223 41285.000567129631
41285.000069444446 41285.001122685186
41285.000092592592 41285.001620370371
41285.000138888892 41285.00340277778
41285.000185185185 41285.000405092593
41285.000196759262 41285.000856481478
41285.000208333331 41285.000717592593... (5 Replies)
Discussion started by: phpshell
5 Replies
6. UNIX for Advanced & Expert Users
I frequently use awk time functions and am switching some scripts over to mawk. I don't have the mktime or strftime functions in mawk, but it appears that there is a way, as explained here in "Time functions":
Please only cut-and-past links to man pages from our man pages.
So, simple... (10 Replies)
Discussion started by: treesloth
10 Replies
7. Shell Programming and Scripting
I have a lines like below, captured from rrdtool fetch command,
1395295200 2.0629986254e+06 7.4634784967e+05
1395297000 2.0198121616e+06 6.8658888903e+05
1395298800 1.8787141122e+06 6.7482866452e+05
1395300600 1.7586118678e+06 6.7867977653e+05
1395302400 1.8222762151e+06 7.1301678859e+05I'm... (3 Replies)
Discussion started by: rk4k
3 Replies
LEARN ABOUT OSX
wcsftime_l
WCSFTIME(3) BSD Library Functions Manual WCSFTIME(3)
NAME
wcsftime, wcsftime_l -- convert date and time to a wide-character string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <wchar.h>
size_t
wcsftime(wchar_t *restrict wcs, size_t maxsize, const wchar_t *restrict format, const struct tm *restrict timeptr);
#include <wchar.h>
#include <xlocale.h>
size_t
wcsftime_l(wchar_t *restrict wcs, size_t maxsize, const wchar_t *restrict format, const struct tm *restrict timeptr, locale_t loc);
DESCRIPTION
The wcsftime() function is equivalent to the strftime() function, except for the types of its arguments. Refer to strftime(3) for a detailed
description.
While the wcsftime() function uses the current locale, the wcsftime_l() function may be passed a locale directly. See xlocale(3) for more
information.
COMPATIBILITY
Some early implementations of wcsftime() had a format argument with type const char *, instead of const wchar_t *.
SEE ALSO
strftime(3), xlocale(3)
STANDARDS
The wcsftime() function conforms to ISO/IEC 9899:1999 (``ISO C99'').
BSD
September 8, 2002 BSD