libgu/gu_timeval.c File Reference

real-world clock routines More...

#include "before_system.h"
#include <sys/time.h>
#include "gu.h"

Functions
int	gu_timeval_cmp (const struct timeval *t1, const struct timeval *t2)
	Compare two times in struct timeval format.
void	gu_timeval_sub (struct timeval *t1, const struct timeval *t2)
	Subtract one time in struct timeval format from another.
void	gu_timeval_add (struct timeval *t1, const struct timeval *t2)
	Add one time in struct timeval format to another.
void	gu_timeval_cpy (struct timeval *t1, const struct timeval *t2)
	Copy a struct timeval.
void	gu_timeval_zero (struct timeval *t)

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Detailed Description

real-world clock routines

These are utility routines for dealing with real-world clock values (struct timeval). They provide a way to zero, copy, add, subtract, and compare such values.

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Function Documentation

void gu_timeval_add (  struct timeval *  t1, const struct timeval *  t2 )

Add one time in struct timeval format to another. This utility function adds t2 to t1.

int gu_timeval_cmp (  const struct timeval *  t1, const struct timeval *  t2 )

Compare two times in struct timeval format. This utility function is used to compare times. It returns 1 if t1 is greater than t2, zero if t1 is equal to t2, and -1 if t1 is less than t2.

void gu_timeval_cpy (  struct timeval *  t1, const struct timeval *  t2 )

Copy a struct timeval. This utility function copies time t2 to time t1.

void gu_timeval_sub (  struct timeval *  t1, const struct timeval *  t2 )

Subtract one time in struct timeval format from another. This utility function is used to subtract time t2 from time t1.

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