/* time.c - time file for time *//* Copyright 1992-1993 Wind River Systems, Inc. *//*modification history--------------------01c,05feb93,jdi  documentation cleanup for 5.1.01b,20sep92,smb  documentation additions01a,25jul92,smb  written.*//*  DESCRIPTION    INCLUDE FILE: time.h   SEE ALSO: American National Standard X3.159-1989 NOMANUAL*/#include "vxWorks.h"#include "time.h"#include "timers.h"/****************************************************************************** time - determine the current calendar time (ANSI)** This routine returns the implementation's best approximation of current* calendar time in seconds.  If <timer> is non-NULL, the return value is* also copied to the location <timer> points to.** INTERNAL* Uses the POSIX clockLib functions.* Does this return the number of seconds since the BOARD was booted?** INCLUDE FILES: time.h** RETURNS:* The current calendar time in seconds, or ERROR (-1) if the calendar time* is not available.** SEE ALSO: clock_gettime()*/ time_t time    (    time_t *timer	/* calendar time in seconds */    )    {    struct timespec tp;    if (clock_gettime (CLOCK_REALTIME, &tp) == 0)	{	if (timer != NULL)	    *timer = (time_t) tp.tv_sec;	return (time_t) (tp.tv_sec);	}    else	return (time_t) (ERROR);    }