ztrttp.f - Online Linux Manual Page

Section : 3
Updated : Tue Nov 14 2017
Source : Version 3.8.0
Note : LAPACK
NAMEztrttp.f
SYNOPSIS
Functions/Subroutinessubroutine ztrttp (UPLO, N, A, LDA, AP, INFO)
ZTRTTP copies a triangular matrix from the standard full format (TR) to the standard packed format (TP)​.
Function/Subroutine Documentation
subroutine ztrttp (character UPLO, integer N, complex*16, dimension( lda, * ) A, integer LDA, complex*16, dimension( * ) AP, integer INFO)ZTRTTP copies a triangular matrix from the standard full format (TR) to the standard packed format (TP)​. Purpose: ZTRTTP 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 COMPLEX*16 array, dimension (LDA,N) On entry, 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 COMPLEX*16 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 valueAuthor: Univ​. of Tennessee Univ​. of California Berkeley Univ​. of Colorado Denver NAG Ltd​. Date: December 2016 Definition at line 106 of file ztrttp​.f​.
AuthorGenerated automatically by Doxygen for LAPACK from the source code​. 0
Johanes Gumabo
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