ctrttp (l)  Linux Man Pages
ctrttp: copies a triangular matrix A from full format (TR) to standard packed format (TP)
Command to display ctrttp
manual in Linux: $ man l ctrttp
NAME
CTRTTP  copies a triangular matrix A from full format (TR) to standard packed format (TP)
SYNOPSIS
 SUBROUTINE CTRTTP(

UPLO, N, A, LDA, AP, INFO )

CHARACTER
UPLO

INTEGER
INFO, N, LDA

COMPLEX
A( LDA, * ), AP( * )
PURPOSE
CTRTTP copies a triangular matrix A from full format (TR) to standard
packed format (TP).
ARGUMENTS
 UPLO (input) CHARACTER

= aqUaq: A is upper triangular;
= aqLaq: A is lower triangular.
 N (input) INTEGER

The order of the matrices AP and A. N >= 0.
 A (input) COMPLEX array, dimension (LDA,N)

On entry, the triangular matrix A. If UPLO = aqUaq, the leading
NbyN 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 = aqLaq, the
leading NbyN 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 (input) INTEGER

The leading dimension of the array A. LDA >= max(1,N).
 AP (output) COMPLEX array, dimension ( N*(N+1)/2 ),

On exit, the upper or lower triangular matrix A, packed
columnwise in a linear array. The jth column of A is stored
in the array AP as follows:
if UPLO = aqUaq, AP(i + (j1)*j/2) = A(i,j) for 1<=i<=j;
if UPLO = aqLaq, AP(i + (j1)*(2nj)/2) = A(i,j) for j<=i<=n.
 INFO (output) INTEGER

= 0: successful exit
< 0: if INFO = i, the ith argument had an illegal value
Pages related to ctrttp
 ctrttp (3)
 ctrttf (l)  copies a triangular matrix A from standard full format (TR) to rectangular full packed format (TF)
 ctrti2 (l)  computes the inverse of a complex upper or lower triangular matrix
 ctrtri (l)  computes the inverse of a complex upper or lower triangular matrix A
 ctrtrs (l)  solves a triangular system of the form A * X = B, A**T * X = B, or A**H * X = B,
 ctrcon (l)  estimates the reciprocal of the condition number of a triangular matrix A, in either the 1norm or the infinitynorm
 ctrevc (l)  computes some or all of the right and/or left eigenvectors of a complex upper triangular matrix T
 ctrexc (l)  reorders the Schur factorization of a complex matrix A = Q*T*Q**H, so that the diagonal element of T with row index IFST is moved to row ILST