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CentOS 7.0 - man page for dtrttp (centos section 3)

dtrttp.f(3)							      LAPACK							       dtrttp.f(3)

NAME
dtrttp.f -
SYNOPSIS
Functions/Subroutines subroutine dtrttp (UPLO, N, A, LDA, AP, INFO) DTRTTP copies a triangular matrix from the standard full format (TR) to the standard packed format (TP). Function/Subroutine Documentation subroutine dtrttp (characterUPLO, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( * )AP, integerINFO) DTRTTP copies a triangular matrix from the standard full format (TR) to the standard packed format (TP). Purpose: DTRTTP copies a triangular matrix A from full format (TR) to standard packed format (TP). Parameters: UPLO UPLO is CHARACTER*1 = 'U': A is upper triangular. = 'L': A is lower triangular. N N is INTEGER The order of the matrices AP and A. N >= 0. A A is DOUBLE PRECISION array, dimension (LDA,N) On exit, the triangular matrix A. If UPLO = 'U', the leading N-by-N upper triangular part of A contains the upper triangular part of the matrix A, and the strictly lower triangular part of A is not referenced. If UPLO = 'L', the leading N-by-N lower triangular part of A contains the lower triangular part of the matrix A, and the strictly upper triangular part of A is not referenced. LDA LDA is INTEGER The leading dimension of the array A. LDA >= max(1,N). AP AP is DOUBLE PRECISION array, dimension (N*(N+1)/2 On exit, the upper or lower triangular matrix A, packed columnwise in a linear array. The j-th column of A is stored in the array AP as follows: if UPLO = 'U', AP(i + (j-1)*j/2) = A(i,j) for 1<=i<=j; if UPLO = 'L', AP(i + (j-1)*(2n-j)/2) = A(i,j) for j<=i<=n. INFO INFO is INTEGER = 0: successful exit < 0: if INFO = -i, the i-th argument had an illegal value Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: September 2012 Definition at line 105 of file dtrttp.f. Author Generated automatically by Doxygen for LAPACK from the source code. Version 3.4.2 Tue Sep 25 2012 dtrttp.f(3)