HP 5961-0509 manual Or base 32 equivalent 7-bit mode, Procedure to encode a number

	Encoding PE Flag Values and X,Y Coordinates
	Flag values and X,Y coordinates are encoded into a base 64 (default)
	or base 32 equivalent (7-bit mode).
	The following steps give a generic algorithm for encoding a number.
	Assume x is the number to be encoded. Use steps 1 and 2 only if
	you are encoding fractional data; otherwise, begin with step 3.
Note	When converting numbers to base 32 or 64 (step 4 in the following
	instructions), note that highest order digits are always in the high
	range, all other digits are in the low range. Therefore, if there is
	only one digit in a number, it is in the high range.
	Table 20-24 Procedure to encode a number
	STEPS	EXAMPLE
	1. Fraction adjustment. If you are	x = 82.83
	using fractional data, this step converts
	the number of decimal places in your
	data to the number of binary fractional
	bits. Assume "n" is the number of
	fractional binary bits specified by the
	fractional data flag.
	a. Multiply the number of decimal	2 × 3.33 = 6.66
	places contained in the data by 3.33.
	b. Round that number up to the next
	integer to get integer n.
	n = round (decimal places ×	n = 7
	3.33)
	x = x × 2n	x = 82.83 × 2 7 =
		10,525.42

EN PE, Polyline Encoded 20-37