kolibrios/programs/develop/ktcc/trunk/libc.obj/source/time/asctime.c
turbocat cde4fa851d libc.obj:
- Formatted by clang-format (WebKit-style).
- Removed unnecessary errno linux. 
- Added KOS error codes. 
- String functions have been replaced with more optimal ones for x86. 
- Changed wrappers for 70 sysfunction.

git-svn-id: svn://kolibrios.org@9765 a494cfbc-eb01-0410-851d-a64ba20cac60
2022-04-15 09:00:55 +00:00

35 lines
926 B
C

#include "stddef.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
const char* wday_str[7] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
const char* mon_str[12] = { "Jan", "Feb", "Mar", "Ap", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
#pragma GCC push_options
#pragma GCC optimize("O0")
#define TIME_STR_MAX 27
char* asctime(const struct tm* tm)
{
if (!tm) {
__errno = EINVAL;
return NULL;
}
if (tm->tm_wday > 6 || tm->tm_wday < 0 || tm->tm_mon < 0 || tm->tm_mon > 11) {
errno = EINVAL;
return NULL;
}
static char time_str[TIME_STR_MAX];
snprintf(time_str, TIME_STR_MAX - 1, "%.3s %.3s%3d %02d:%02d:%02d %d\n",
wday_str[tm->tm_wday],
mon_str[tm->tm_mon],
tm->tm_mday, tm->tm_hour,
tm->tm_min, tm->tm_sec,
1900 + tm->tm_year);
return time_str;
}
#pragma GCC pop_options