.TH "TESTING/LIN/zqlt03.f" 3 "Version 3.12.0" "LAPACK" \" -*- nroff -*-
.ad l
.nh
.SH NAME
TESTING/LIN/zqlt03.f
.SH SYNOPSIS
.br
.PP
.SS "Functions/Subroutines"

.in +1c
.ti -1c
.RI "subroutine \fBzqlt03\fP (m, n, k, af, c, cc, q, lda, tau, work, lwork, rwork, result)"
.br
.RI "\fBZQLT03\fP "
.in -1c
.SH "Function/Subroutine Documentation"
.PP 
.SS "subroutine zqlt03 (integer m, integer n, integer k, complex*16, dimension( lda, * ) af, complex*16, dimension( lda, * ) c, complex*16, dimension( lda, * ) cc, complex*16, dimension( lda, * ) q, integer lda, complex*16, dimension( * ) tau, complex*16, dimension( lwork ) work, integer lwork, double precision, dimension( * ) rwork, double precision, dimension( * ) result)"

.PP
\fBZQLT03\fP 
.PP
\fBPurpose:\fP
.RS 4

.PP
.nf
!>
!> ZQLT03 tests ZUNMQL, which computes Q*C, Q'*C, C*Q or C*Q'\&.
!>
!> ZQLT03 compares the results of a call to ZUNMQL with the results of
!> forming Q explicitly by a call to ZUNGQL and then performing matrix
!> multiplication by a call to ZGEMM\&.
!> 
.fi
.PP
 
.RE
.PP
\fBParameters\fP
.RS 4
\fIM\fP 
.PP
.nf
!>          M is INTEGER
!>          The order of the orthogonal matrix Q\&.  M >= 0\&.
!> 
.fi
.PP
.br
\fIN\fP 
.PP
.nf
!>          N is INTEGER
!>          The number of rows or columns of the matrix C; C is m-by-n if
!>          Q is applied from the left, or n-by-m if Q is applied from
!>          the right\&.  N >= 0\&.
!> 
.fi
.PP
.br
\fIK\fP 
.PP
.nf
!>          K is INTEGER
!>          The number of elementary reflectors whose product defines the
!>          orthogonal matrix Q\&.  M >= K >= 0\&.
!> 
.fi
.PP
.br
\fIAF\fP 
.PP
.nf
!>          AF is COMPLEX*16 array, dimension (LDA,N)
!>          Details of the QL factorization of an m-by-n matrix, as
!>          returned by ZGEQLF\&. See CGEQLF for further details\&.
!> 
.fi
.PP
.br
\fIC\fP 
.PP
.nf
!>          C is COMPLEX*16 array, dimension (LDA,N)
!> 
.fi
.PP
.br
\fICC\fP 
.PP
.nf
!>          CC is COMPLEX*16 array, dimension (LDA,N)
!> 
.fi
.PP
.br
\fIQ\fP 
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.nf
!>          Q is COMPLEX*16 array, dimension (LDA,M)
!> 
.fi
.PP
.br
\fILDA\fP 
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.nf
!>          LDA is INTEGER
!>          The leading dimension of the arrays AF, C, CC, and Q\&.
!> 
.fi
.PP
.br
\fITAU\fP 
.PP
.nf
!>          TAU is COMPLEX*16 array, dimension (min(M,N))
!>          The scalar factors of the elementary reflectors corresponding
!>          to the QL factorization in AF\&.
!> 
.fi
.PP
.br
\fIWORK\fP 
.PP
.nf
!>          WORK is COMPLEX*16 array, dimension (LWORK)
!> 
.fi
.PP
.br
\fILWORK\fP 
.PP
.nf
!>          LWORK is INTEGER
!>          The length of WORK\&.  LWORK must be at least M, and should be
!>          M*NB, where NB is the blocksize for this environment\&.
!> 
.fi
.PP
.br
\fIRWORK\fP 
.PP
.nf
!>          RWORK is DOUBLE PRECISION array, dimension (M)
!> 
.fi
.PP
.br
\fIRESULT\fP 
.PP
.nf
!>          RESULT is DOUBLE PRECISION array, dimension (4)
!>          The test ratios compare two techniques for multiplying a
!>          random matrix C by an m-by-m orthogonal matrix Q\&.
!>          RESULT(1) = norm( Q*C - Q*C )  / ( M * norm(C) * EPS )
!>          RESULT(2) = norm( C*Q - C*Q )  / ( M * norm(C) * EPS )
!>          RESULT(3) = norm( Q'*C - Q'*C )/ ( M * norm(C) * EPS )
!>          RESULT(4) = norm( C*Q' - C*Q' )/ ( M * norm(C) * EPS )
!> 
.fi
.PP
 
.RE
.PP
\fBAuthor\fP
.RS 4
Univ\&. of Tennessee 

.PP
Univ\&. of California Berkeley 

.PP
Univ\&. of Colorado Denver 

.PP
NAG Ltd\&. 
.RE
.PP

.PP
Definition at line \fB134\fP of file \fBzqlt03\&.f\fP\&.
.SH "Author"
.PP 
Generated automatically by Doxygen for LAPACK from the source code\&.