table of contents
/home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/LIN/slattr.f(3) | Library Functions Manual | /home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/LIN/slattr.f(3) |
NAME¶
/home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/LIN/slattr.f
SYNOPSIS¶
Functions/Subroutines¶
subroutine SLATTR (imat, uplo, trans, diag, iseed, n, a,
lda, b, work, info)
SLATTR
Function/Subroutine Documentation¶
subroutine SLATTR (integer imat, character uplo, character trans, character diag, integer, dimension( 4 ) iseed, integer n, real, dimension( lda, * ) a, integer lda, real, dimension( * ) b, real, dimension( * ) work, integer info)¶
SLATTR
Purpose:
!> !> SLATTR generates a triangular test matrix. !> IMAT and UPLO uniquely specify the properties of the test !> matrix, which is returned in the array A. !>
Parameters
IMAT
!> IMAT is INTEGER !> An integer key describing which matrix to generate for this !> path. !>
UPLO
!> UPLO is CHARACTER*1 !> Specifies whether the matrix A will be upper or lower !> triangular. !> = 'U': Upper triangular !> = 'L': Lower triangular !>
TRANS
!> TRANS is CHARACTER*1 !> Specifies whether the matrix or its transpose will be used. !> = 'N': No transpose !> = 'T': Transpose !> = 'C': Conjugate transpose (= Transpose) !>
DIAG
!> DIAG is CHARACTER*1 !> Specifies whether or not the matrix A is unit triangular. !> = 'N': Non-unit triangular !> = 'U': Unit triangular !>
ISEED
!> ISEED is INTEGER array, dimension (4) !> The seed vector for the random number generator (used in !> SLATMS). Modified on exit. !>
N
!> N is INTEGER !> The order of the matrix to be generated. !>
A
!> A is REAL array, dimension (LDA,N) !> The triangular matrix A. If UPLO = 'U', the leading n by n !> upper triangular part of the array A contains the upper !> triangular matrix, and the strictly lower triangular part of !> A is not referenced. If UPLO = 'L', the leading n by n lower !> triangular part of the array A contains the lower triangular !> matrix, and the strictly upper triangular part of A is not !> referenced. If DIAG = 'U', the diagonal elements of A are !> set so that A(k,k) = k for 1 <= k <= n. !>
LDA
!> LDA is INTEGER !> The leading dimension of the array A. LDA >= max(1,N). !>
B
!> B is REAL array, dimension (N) !> The right hand side vector, if IMAT > 10. !>
WORK
!> WORK is REAL array, dimension (3*N) !>
INFO
!> INFO is INTEGER !> = 0: successful exit !> < 0: if INFO = -k, the k-th argument had an illegal value !>
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 131 of file slattr.f.
Author¶
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Version 3.12.0 | LAPACK |