hex:

Syntax:	hex ( A )

Description:

	hex returns a string, that is the hexa-decimal representation
	of A. Although there are no restrictions on the dimensions of
	A, A must be numeric, and REAL.

	Example:

	> hex(1)
	000000000000ff3f  
	> hex (rand(4,4))
	00000040ffffff3f  0000002065ffff3f  000000202421ff3f  000000ff631fff3f  
	000000ff432fff3f  000000ffffffff3f  00000040506aff3f  000000606fffff3f  
	0000002030ffff3f  000000ffff44ff3f  0000002069ffff3f  000000ff2923ff3f  
	000000204651ff3f  000000001fffff3f  000000200c7dff3f  0000006017ffff3f  
