cal	IN:	Calibration factor
	cal_err	IN:	Calibration error
	offset	IN:	Uncalibrated offset
	offset_err	IN:	Uncalibrated offset error
	data_type	IN:	Data type of uncalibrated data

	Purpose	Sets the calibration information associated with data
	Return value	Returns SUCCEED (or 0) if successful and FAIL (or -1) otherwise.
	Description	This routine sets the calibration record associated with a dataset. A calibration record contains four 64-bit floating point values followed by a 32-bit integer, to be interpreted as follows:
		cal calibration factor cal_err calibration error offset uncalibrated offset offset_err uncalibrated offset error data_type data type of uncalibrated data

		The relationship between a value iy stored in a dataset and the actual value y is defined as:
		y = cal * (iy - offset)

		The variable offset_err contains a potential error of offset, and cal_err contains a potential error of cal. Currently the calibration record is provided for information only. The SD interface performs no operations on the data based on the calibration tag.
		DFSDsetcal works like other DFSDset* routines, with one exception: the calibration information is automatically cleared after a call to DFSDputdata or DFSDadddata. Hence, DFSDsetcal must be called again for each dataset that is to be written.
		As an example, suppose the values in a dataset y[] are as follows:
		y[6]={1001.0, 1002.0, 1002.5, 1005.5, 1013.0, 1040.5}

		By defining cal = 0.50 and offset = -200.0 and applying the calibration formula, the calibrated dataset iy[] becomes as follows:
		iy[6]={2, 4, 5, 11, 26, 81}

The array iy[] can then be stored as integers.

	FORTRAN	integer function dsscal(cal, cal_err, offset, offset_err, data_type)
		real*8 cal, cal_err, offset, offset_err
		integer data_type