LAPACK 3.11.0
LAPACK: Linear Algebra PACKage

◆ 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.