ti

Algorithms for Image Processing and Computer Vision Source Code

@c ----------------------------------------------------------------------
@node time, time
@heading @code{time}
@subheading Syntax

@example
#include <time.h>

time_t time(time_t *t);
@end example

@subheading Description

If @var{t} is not @code{NULL}, the current time is stored in @code{*t}. 

@subheading Return Value

The current time is returned.

@subheading Example

@example
printf("Time is %d\n", time(0));
@end example

@c ----------------------------------------------------------------------
@node timezone, time
@heading @code{timezone}
@subheading Syntax

@example
#include <time.h>

char *timezone(int minutes, int daylight);
@end example

@subheading Description

Given the number of minutes west of GMT and whether or not daylight
savings time is in affect, returns the name of the timezone. 

If the environment variable TZNAME is set, it should be like
@code{EST,EDT}, and the name of the timezone will come from that. 

@subheading Return Value

A pointer to the timezone or @code{NULL} if invalid.

@subheading Example

@example
printf("EST ? %s\n", timezone(5*60, 0));
@end example