frexp:

Syntax:	frexp ( A )

Description:
	
	Frexp returns a list with elements `f' and `e'.
	Frexp splits A into a normalized fraction in the interval:

		0.5 <= abs(f) <= 1

	which is returned in `f', and a power of 2, which is returned
	in `e'. If A is zero, then both `e' and `f' are zero.

	Frexp operates on REAL matrices of any dimension.

	The builtin function, frexp, depends upon operating system
	support. Frexp is defined in the ANSI-C standard, and if it is
	not part of the C compilation system used to build RLaB, it
	will not be present.

See Also: log, log10, log2, exp, mod
