LAPACK 3.12.0
LAPACK: Linear Algebra PACKage
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◆ zlat2c()

subroutine zlat2c ( character uplo,
integer n,
complex*16, dimension( lda, * ) a,
integer lda,
complex, dimension( ldsa, * ) sa,
integer ldsa,
integer info )

ZLAT2C converts a double complex triangular matrix to a complex triangular matrix.

Download ZLAT2C + dependencies [TGZ] [ZIP] [TXT]

Purpose:
!>
!> ZLAT2C converts a COMPLEX*16 triangular matrix, SA, to a COMPLEX
!> triangular matrix, A.
!>
!> RMAX is the overflow for the SINGLE PRECISION arithmetic
!> ZLAT2C checks that all the entries of A are between -RMAX and
!> RMAX. If not the conversion is aborted and a flag is raised.
!>
!> This is an auxiliary routine so there is no argument checking.
!> 
Parameters
[in]UPLO
!>          UPLO is CHARACTER*1
!>          = 'U':  A is upper triangular;
!>          = 'L':  A is lower triangular.
!> 
[in]N
!>          N is INTEGER
!>          The number of rows and columns of the matrix A.  N >= 0.
!> 
[in]A
!>          A is COMPLEX*16 array, dimension (LDA,N)
!>          On entry, the N-by-N triangular coefficient matrix A.
!> 
[in]LDA
!>          LDA is INTEGER
!>          The leading dimension of the array A.  LDA >= max(1,N).
!> 
[out]SA
!>          SA is COMPLEX array, dimension (LDSA,N)
!>          Only the UPLO part of SA is referenced.  On exit, if INFO=0,
!>          the N-by-N coefficient matrix SA; if INFO>0, the content of
!>          the UPLO part of SA is unspecified.
!> 
[in]LDSA
!>          LDSA is INTEGER
!>          The leading dimension of the array SA.  LDSA >= max(1,M).
!> 
[out]INFO
!>          INFO is INTEGER
!>          = 0:  successful exit.
!>          = 1:  an entry of the matrix A is greater than the SINGLE
!>                PRECISION overflow threshold, in this case, the content
!>                of the UPLO part of SA in exit is unspecified.
!> 
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.