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

.in +1c
.ti -1c
.RI "subroutine \fBclatsy\fP (uplo, n, x, ldx, iseed)"
.br
.RI "\fBCLATSY\fP "
.in -1c
.SH "Function/Subroutine Documentation"
.PP 
.SS "subroutine clatsy (character uplo, integer n, complex, dimension( ldx, * ) x, integer ldx, integer, dimension( * ) iseed)"

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

.PP
.nf
 CLATSY generates a special test matrix for the complex symmetric
 (indefinite) factorization\&.  The pivot blocks of the generated matrix
 will be in the following order:
    2x2 pivot block, non diagonalizable
    1x1 pivot block
    2x2 pivot block, diagonalizable
    (cycle repeats)
 A row interchange is required for each non-diagonalizable 2x2 block\&.
.fi
.PP
 
.RE
.PP
\fBParameters\fP
.RS 4
\fIUPLO\fP 
.PP
.nf
          UPLO is CHARACTER
          Specifies whether the generated matrix is to be upper or
          lower triangular\&.
          = 'U':  Upper triangular
          = 'L':  Lower triangular
.fi
.PP
.br
\fIN\fP 
.PP
.nf
          N is INTEGER
          The dimension of the matrix to be generated\&.
.fi
.PP
.br
\fIX\fP 
.PP
.nf
          X is COMPLEX array, dimension (LDX,N)
          The generated matrix, consisting of 3x3 and 2x2 diagonal
          blocks which result in the pivot sequence given above\&.
          The matrix outside of these diagonal blocks is zero\&.
.fi
.PP
.br
\fILDX\fP 
.PP
.nf
          LDX is INTEGER
          The leading dimension of the array X\&.
.fi
.PP
.br
\fIISEED\fP 
.PP
.nf
          ISEED is INTEGER array, dimension (4)
          On entry, the seed for the random number generator\&.  The last
          of the four integers must be odd\&.  (modified on exit)
.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 \fB88\fP of file \fBclatsy\&.f\fP\&.
.SH "Author"
.PP 
Generated automatically by Doxygen for LAPACK from the source code\&.