NUMERIC CLUSTER for TOWER EIFFEL

copyright:
	developed by: Nicolas Waquier nicolas@esclare.fdn.org

version: 0.2 94/12 (replace MATRIX cluster).
state:
	will be expanded.
	report every problem.

contain:
	in matrix/			-- matrix of doubles
		matrix.e			matrix of doubles
		linear_sys.e	lynear system to be resolved with gauss method
		matrixer.e		an ancestor to both matrix and vector
		vector.e			a vector of doubles
		m_test.e			test the cluster
	in matrix_num/		-- matrix of rationals
		matrix.e
		linear_sys.e
		matrixer.e
		vector.e
		m_test.e	
	in number/			-- rational numbers
		n_test.e			test the class
		rational.e
		
note: the algorythme is not !! optimal. Please buy specialized books if you need such algorithms. (Or send me new versions of the classes.)

future change:
	clean up the classes.
	add dantzig algorithm for inequation linear systems
	replace rationals (integers) with rationals (factorial).
	   see cluster factorial.
	make it interoperate with diferents compilers.
	   LET ME KNOW IF YOU'VE MODIFIED THE CLASSES TO ACHIEVE THIS.
	put a much more pretty output depending on the width of the columns
	   in matrix_num.

test with compiler: Tower Eiffel 1.3.1.0

need clusters: class FORMAT from cluster tower/../sig

time to compile: 
number/ 09 sec Eiffel -> C
matrix/ 18 sec Eiffel -> C
matrix_num/ 20 sec Eiffel -> C

development platform: nextstep/486 DX2 66 16Mo color