zlauum.f - Online Linux Manual Page

Section : 3
Updated : Tue Nov 14 2017
Source : Version 3.8.0
Note : LAPACK
NAMEzlauum.f
SYNOPSIS
Functions/Subroutinessubroutine zlauum (UPLO, N, A, LDA, INFO)
ZLAUUM computes the product UUH or LHL, where U and L are upper or lower triangular matrices (blocked algorithm)​.
Function/Subroutine Documentation
subroutine zlauum (character UPLO, integer N, complex*16, dimension( lda, * ) A, integer LDA, integer INFO)ZLAUUM computes the product UUH or LHL, where U and L are upper or lower triangular matrices (blocked algorithm)​. Purpose: ZLAUUM computes the product U * U**H or L**H * L, where the triangular factor U or L is stored in the upper or lower triangular part of the array A. If UPLO = 'U' or 'u' then the upper triangle of the result is stored, overwriting the factor U in A. If UPLO = 'L' or 'l' then the lower triangle of the result is stored, overwriting the factor L in A. This is the blocked form of the algorithm, calling Level 3 BLAS.Parameters: UPLO UPLO is CHARACTER*1 Specifies whether the triangular factor stored in the array A is upper or lower triangular: = 'U': Upper triangular = 'L': Lower triangular
N N is INTEGER The order of the triangular factor U or L. N >= 0.
A A is COMPLEX*16 array, dimension (LDA,N) On entry, the triangular factor U or L. On exit, if UPLO = 'U', the upper triangle of A is overwritten with the upper triangle of the product U * U**H; if UPLO = 'L', the lower triangle of A is overwritten with the lower triangle of the product L**H * L.
LDA LDA is INTEGER The leading dimension of the array A. LDA >= max(1,N).
INFO INFO is INTEGER = 0: successful exit < 0: if INFO = -k, the k-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 104 of file zlauum​.f​.
AuthorGenerated automatically by Doxygen for LAPACK from the source code​. 0
Johanes Gumabo
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