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								   SbTime(3IV)

NAME
     SbTime (SbTime) - class for representation of a time

INHERITS FROM
     SbTime

SYNOPSIS
     #include <Inventor_c/SbTime.h>

	  Functions from class SbTime:

     SbTime *		 SbTimeCreate()
     SbTime *		 SbTimeCreateSec(double sec)
     SbTime *		 SbTimeCreateSecUSec(int32_t sec, long usec)
     SbTime *		 SbTimeCreateTimeval(const struct timeval *tv)
     void		 SbTimeSbTimeDelete(SbTime *this, SbTime *)
     SbTime		 SbTimeGetTimeOfDay()
     void		 SbTimeSetToTimeOfDay(SbTime *this)
     SbTime		 SbTimeZero()
     SbTime		 SbTimeMax()
     void		 SbTimeSetSec(SbTime *this, double sec)
     void		 SbTimeSetSecUSec(SbTime *this, int32_t sec, long
			      usec)
     void		 SbTimeSetTimeval(SbTime *this, const struct timeval
			      *tv)
     void		 SbTimeSetMSec(SbTime *this, unsigned long msec)
     double		 SbTimeGetSec(const SbTime *this)
     void		 SbTimeGetSecUSec(const SbTime *this, int32_t *sec,
			      long *usec)
     void		 SbTimeGetTimeval(const SbTime *this, struct timeval
			      *tv)
     unsigned long	 SbTimeGetMSec(const SbTime *this)
     SbString		 SbTimeFormat(const SbTime *this, const char *fmt =
			      "%S.%i")
     SbString		 SbTimeFormatDate(const SbTime *this, const char *fmt
			      = "%A, %D %r")
     SbTime		 SbTimeAdd(SbTime *this, const SbTime *t0, const
			      SbTime *t1)
     SbTime		 SbTimeSub(SbTime *this, const SbTime *t0, const
			      SbTime *t1)
     SbTime *		 SbTimeAddTo(SbTime *this, const SbTime *tm)
     SbTime *		 SbTimeSubFrom(SbTime *this, const SbTime *tm)
     SbTime		 SbTimeNegate(const SbTime *this)
     SbTime		 SbTimeMult(SbTime *this, const SbTime *tm, double s)
     SbTime		 SbTimeDiv(SbTime *this, const SbTime *tm, double s)
     SbTime *		 SbTimeMultBy(SbTime *this, double s)
     SbTime *		 SbTimeDivBy(SbTime *this, double s)
     double		 SbTimeDivByTime(const SbTime *this, const SbTime *tm)
     SbTime		 SbTimeModulo(const SbTime *this, const SbTime *tm)
     int		 SbTimeIsEq(const SbTime *this, const SbTime *tm)
     int		 SbTimeIsNEq(const SbTime *this, const SbTime *tm)

Page 1

SbTime(3IV)

     SbBool		 SbTimeIsLT(const SbTime *this, const SbTime *tm)
     SbBool		 SbTimeIsGT(const SbTime *this, const SbTime *tm)
     SbBool		 SbTimeIsLEq(const SbTime *this, const SbTime *tm)
     SbBool		 SbTimeIsGEq(const SbTime *this, const SbTime *tm)

DESCRIPTION
     This class represents and performs operations on time. Operations may be
     done in seconds, seconds and microseconds, or using a struct timeval
     (defined in /usr/include/sys/time.h).

FUNCTIONS
     SbTime *		 SbTimeCreate()
     SbTime *		 SbTimeCreateSec(double sec)
     SbTime *		 SbTimeCreateSecUSec(int32_t sec, long usec)
     SbTime *		 SbTimeCreateTimeval(const struct timeval *tv)
	  Constructors taking seconds, seconds and microseconds, or a struct
	  timeval.

     void		 SbTimeSbTimeDelete(SbTime *this, SbTime *)
	  Destructor.

     SbTime		 SbTimeGetTimeOfDay()
	  Get the current time (seconds since Jan 1, 1970).

     void		 SbTimeSetToTimeOfDay(SbTime *this)
	  Set to the current time (seconds since Jan 1, 1970).

     SbTime		 SbTimeZero()
	  Get a zero time.

     SbTime		 SbTimeMax()
	  Get a time far, far into the future.

     void		 SbTimeSetSec(SbTime *this, double sec)
	  Set time from a double (in seconds).

     void		 SbTimeSetSecUSec(SbTime *this, int32_t sec, long
			      usec)
	  Set time from seconds + microseconds.

     void		 SbTimeSetTimeval(SbTime *this, const struct timeval
			      *tv)
	  Set time from a struct timeval.

     void		 SbTimeSetMSec(SbTime *this, unsigned long msec)
	  Set time from milliseconds.

     double		 SbTimeGetSec(const SbTime *this)
	  Get time in seconds as a double.

Page 2

								   SbTime(3IV)

     void		 SbTimeGetSecUSec(const SbTime *this, int32_t *sec,
			      long *usec)
	  Get time in seconds and microseconds.

     void		 SbTimeGetTimeval(const SbTime *this, struct timeval
			      *tv)
	  Get time in a struct timeval.

     unsigned long	 SbTimeGetMSec(const SbTime *this)
	  Get time in milliseconds (for Xt).

     SbString		 SbTimeFormat(const SbTime *this, const char *fmt =
			      "%S.%i")
	  Convert to a string. The default format is seconds with 3 digits of
	  fraction precision. fmt is a character string that consists of field
	  descriptors and text characters, in a manner analogous to cftime
	  (3C) and printf (3S). Each field descriptor consists of a %
	  character followed by another character which specifies the
	  replacement for the field descriptor. All other characters are
	  copied from fmt into the result. The following field descriptors are
	  supported:

	       %   the `%' character
	       D   total number of days
	       H   total number of hours
	       M   total number of minutes
	       S   total number of seconds
	       I   total number of milliseconds
	       U   total number of microseconds
	       h   hours remaining after the days (00-23)
	       m   minutes remaining after the hours (00-59)
	       s   seconds remaining after the minutes (00-59)
	       i   milliseconds remaining after the seconds (000-999)
	       u   microseconds remaining after the seconds (000000-999999)

	  The uppercase descriptors are formatted with a leading `-' for
	  negative times; the lowercase descriptors are formatted fixed width,
	  with leading zeros. For example, a reasonable format string might be
	  "elapsed time: %M minutes, %s seconds". The default value of fmt,
	  "%S.%i", formats the time as seconds with 3 digits of fractional
	  precision.

     SbString		 SbTimeFormatDate(const SbTime *this, const char *fmt
			      = "%A, %D %r")
	  Convert to a date string, interpreting the time as seconds since Jan
	  1, 1970. The default format gives "Tuesday, 01/26/93 11:23:41 AM".
	  See the cftime() reference page for explanation of the format
	  string.

     SbTime		 SbTimeAdd(SbTime *this, const SbTime *t0, const
			      SbTime *t1)

Page 3

SbTime(3IV)

     SbTime		 SbTimeSub(SbTime *this, const SbTime *t0, const
			      SbTime *t1)
	  Addition and subtraction of two times.

     SbTime *		 SbTimeAddTo(SbTime *this, const SbTime *tm)
     SbTime *		 SbTimeSubFrom(SbTime *this, const SbTime *tm)
	  Addition and subtraction of two times which modifies the time
	  structure.

     SbTime		 SbTimeNegate(const SbTime *this)
	  Unary negation.

     SbTime		 SbTimeMult(SbTime *this, const SbTime *tm, double s)
     SbTime		 SbTimeDiv(SbTime *this, const SbTime *tm, double s)
	  Multiplication and division by scalar.

     SbTime *		 SbTimeMultBy(SbTime *this, double s)
     SbTime *		 SbTimeDivBy(SbTime *this, double s)
	  Destructive multiplication and division by scalar.

     double		 SbTimeDivByTime(const SbTime *this, const SbTime *tm)
	  Division by another time.

     SbTime		 SbTimeModulo(const SbTime *this, const SbTime *tm)
	  Modulus for two times (remainder when time1 is divided by time2).

     int		 SbTimeIsEq(const SbTime *this, const SbTime *tm)
     int		 SbTimeIsNEq(const SbTime *this, const SbTime *tm)
	  Equality operators.

     SbBool		 SbTimeIsLT(const SbTime *this, const SbTime *tm)
     SbBool		 SbTimeIsGT(const SbTime *this, const SbTime *tm)
     SbBool		 SbTimeIsLEq(const SbTime *this, const SbTime *tm)
     SbBool		 SbTimeIsGEq(const SbTime *this, const SbTime *tm)
	  Relational operators.

FILE FORMAT/DEFAULTS
     Time {
     }

SEE ALSO
     cftime

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