NAME

SYNOPSIS

  SUBROUTINE ZUNML2( SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, WORK, 
 *      INFO)
  CHARACTER * 1 SIDE, TRANS
  DOUBLE COMPLEX A(LDA,*), TAU(*), C(LDC,*), WORK(*)
  INTEGER M, N, K, LDA, LDC, INFO
 
  SUBROUTINE ZUNML2_64( SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, 
 *      WORK, INFO)
  CHARACTER * 1 SIDE, TRANS
  DOUBLE COMPLEX A(LDA,*), TAU(*), C(LDC,*), WORK(*)
  INTEGER*8 M, N, K, LDA, LDC, INFO
 

F95 INTERFACE

  SUBROUTINE UNML2( SIDE, TRANS, [M], [N], [K], A, [LDA], TAU, C, [LDC], 
 *       [WORK], [INFO])
  CHARACTER(LEN=1) :: SIDE, TRANS
  COMPLEX(8), DIMENSION(:) :: TAU, WORK
  COMPLEX(8), DIMENSION(:,:) :: A, C
  INTEGER :: M, N, K, LDA, LDC, INFO
 
  SUBROUTINE UNML2_64( SIDE, TRANS, [M], [N], [K], A, [LDA], TAU, C, 
 *       [LDC], [WORK], [INFO])
  CHARACTER(LEN=1) :: SIDE, TRANS
  COMPLEX(8), DIMENSION(:) :: TAU, WORK
  COMPLEX(8), DIMENSION(:,:) :: A, C
  INTEGER(8) :: M, N, K, LDA, LDC, INFO
 

C INTERFACE

void zunml2(char side, char trans, int m, int n, int k, doublecomplex *a, int lda, doublecomplex *tau, doublecomplex *c, int ldc, int *info);

void zunml2_64(char side, char trans, long m, long n, long k, doublecomplex *a, long lda, doublecomplex *tau, doublecomplex *c, long ldc, long *info);

PURPOSE

where Q is a complex unitary matrix defined as the product of k elementary reflectors

      Q = H(k)' . . . H(2)' H(1)'

as returned by CGELQF. Q is of order m if SIDE = 'L' and of order n if SIDE = 'R'.

ARGUMENTS

* SIDE (input)

* TRANS (input)

* M (input)

The number of rows of the matrix C. M >= 0.

* N (input)

The number of columns of the matrix C. N >= 0.

* K (input)

The number of elementary reflectors whose product defines the matrix Q. If SIDE = 'L', M >= K >= 0; if SIDE = 'R', N >= K >= 0.

* A (input)

(LDA,M) if SIDE = 'L', (LDA,N) if SIDE = 'R' The i-th row must contain the vector which defines the elementary reflector H(i), for i = 1,2,...,k, as returned by CGELQF in the first k rows of its array argument A. A is modified by the routine but restored on exit.

* LDA (input)

The leading dimension of the array A. LDA >= max(1,K).

* TAU (input)

TAU(i) must contain the scalar factor of the elementary reflector H(i), as returned by CGELQF.

* C (input/output)

On entry, the m-by-n matrix C. On exit, C is overwritten by Q*C or Q'*C or C*Q' or C*Q.

* LDC (input)

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

* WORK (workspace)

(N) if SIDE = 'L', (M) if SIDE = 'R'

* INFO (output)