.TH "TESTING/LIN/slattb.f" 3 "Version 3.12.0" "LAPACK" \" -*- nroff -*- .ad l .nh .SH NAME TESTING/LIN/slattb.f .SH SYNOPSIS .br .PP .SS "Functions/Subroutines" .in +1c .ti -1c .RI "subroutine \fBslattb\fP (imat, uplo, trans, diag, iseed, n, kd, ab, ldab, b, work, info)" .br .RI "\fBSLATTB\fP " .in -1c .SH "Function/Subroutine Documentation" .PP .SS "subroutine slattb (integer imat, character uplo, character trans, character diag, integer, dimension( 4 ) iseed, integer n, integer kd, real, dimension( ldab, * ) ab, integer ldab, real, dimension( * ) b, real, dimension( * ) work, integer info)" .PP \fBSLATTB\fP .PP \fBPurpose:\fP .RS 4 .PP .nf !> !> SLATTB generates a triangular test matrix in 2-dimensional storage\&. !> IMAT and UPLO uniquely specify the properties of the test matrix, !> which is returned in the array A\&. !> .fi .PP .RE .PP \fBParameters\fP .RS 4 \fIIMAT\fP .PP .nf !> IMAT is INTEGER !> An integer key describing which matrix to generate for this !> path\&. !> .fi .PP .br \fIUPLO\fP .PP .nf !> UPLO is CHARACTER*1 !> Specifies whether the matrix A will be upper or lower !> triangular\&. !> = 'U': Upper triangular !> = 'L': Lower triangular !> .fi .PP .br \fITRANS\fP .PP .nf !> TRANS is CHARACTER*1 !> Specifies whether the matrix or its transpose will be used\&. !> = 'N': No transpose !> = 'T': Transpose !> = 'C': Conjugate transpose (= transpose) !> .fi .PP .br \fIDIAG\fP .PP .nf !> DIAG is CHARACTER*1 !> Specifies whether or not the matrix A is unit triangular\&. !> = 'N': Non-unit triangular !> = 'U': Unit triangular !> .fi .PP .br \fIISEED\fP .PP .nf !> ISEED is INTEGER array, dimension (4) !> The seed vector for the random number generator (used in !> SLATMS)\&. Modified on exit\&. !> .fi .PP .br \fIN\fP .PP .nf !> N is INTEGER !> The order of the matrix to be generated\&. !> .fi .PP .br \fIKD\fP .PP .nf !> KD is INTEGER !> The number of superdiagonals or subdiagonals of the banded !> triangular matrix A\&. KD >= 0\&. !> .fi .PP .br \fIAB\fP .PP .nf !> AB is REAL array, dimension (LDAB,N) !> The upper or lower triangular banded matrix A, stored in the !> first KD+1 rows of AB\&. Let j be a column of A, 1<=j<=n\&. !> If UPLO = 'U', AB(kd+1+i-j,j) = A(i,j) for max(1,j-kd)<=i<=j\&. !> If UPLO = 'L', AB(1+i-j,j) = A(i,j) for j<=i<=min(n,j+kd)\&. !> .fi .PP .br \fILDAB\fP .PP .nf !> LDAB is INTEGER !> The leading dimension of the array AB\&. LDAB >= KD+1\&. !> .fi .PP .br \fIB\fP .PP .nf !> B is REAL array, dimension (N) !> .fi .PP .br \fIWORK\fP .PP .nf !> WORK is REAL array, dimension (2*N) !> .fi .PP .br \fIINFO\fP .PP .nf !> INFO is INTEGER !> = 0: successful exit !> < 0: if INFO = -k, the k-th argument had an illegal value !> .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 \fB133\fP of file \fBslattb\&.f\fP\&. .SH "Author" .PP Generated automatically by Doxygen for LAPACK from the source code\&.