CLARZ man page on Oracle

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clarz.f(3)			    LAPACK			    clarz.f(3)

       clarz.f -

       subroutine clarz (SIDE, M, N, L, V, INCV, TAU, C, LDC, WORK)
	   CLARZ applies an elementary reflector (as returned by stzrzf) to a
	   general matrix.

Function/Subroutine Documentation
   subroutine clarz (characterSIDE, integerM, integerN, integerL, complex,
       dimension( * )V, integerINCV, complexTAU, complex, dimension( ldc, *
       )C, integerLDC, complex, dimension( * )WORK)
       CLARZ applies an elementary reflector (as returned by stzrzf) to a
       general matrix.


	    CLARZ applies a complex elementary reflector H to a complex
	    M-by-N matrix C, from either the left or the right. H is represented
	    in the form

		  H = I - tau * v * v**H

	    where tau is a complex scalar and v is a complex vector.

	    If tau = 0, then H is taken to be the unit matrix.

	    To apply H**H (the conjugate transpose of H), supply conjg(tau) instead

	    H is a product of k elementary reflectors as returned by CTZRZF.


		     SIDE is CHARACTER*1
		     = 'L': form  H * C
		     = 'R': form  C * H


		     M is INTEGER
		     The number of rows of the matrix C.


		     N is INTEGER
		     The number of columns of the matrix C.


		     L is INTEGER
		     The number of entries of the vector V containing
		     the meaningful part of the Householder vectors.
		     If SIDE = 'L', M >= L >= 0, if SIDE = 'R', N >= L >= 0.


		     V is COMPLEX array, dimension (1+(L-1)*abs(INCV))
		     The vector v in the representation of H as returned by
		     CTZRZF. V is not used if TAU = 0.


		     INCV is INTEGER
		     The increment between elements of v. INCV <> 0.


		     TAU is COMPLEX
		     The value tau in the representation of H.


		     C is COMPLEX array, dimension (LDC,N)
		     On entry, the M-by-N matrix C.
		     On exit, C is overwritten by the matrix H * C if SIDE = 'L',
		     or C * H if SIDE = 'R'.


		     LDC is INTEGER
		     The leading dimension of the array C. LDC >= max(1,M).


		     WORK is COMPLEX array, dimension
				    (N) if SIDE = 'L'
				 or (M) if SIDE = 'R'

	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

	   September 2012

	   A. Petitet, Computer Science Dept., Univ. of Tenn., Knoxville, USA

       Further Details:

       Definition at line 148 of file clarz.f.

       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2			Tue Sep 25 2012			    clarz.f(3)

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