zlat2c (3)

Functions/Subroutines

subroutine zlat2c (UPLO, N, A, LDA, SA, LDSA, INFO)

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

subroutine zlat2c (characterUPLO, integerN, complex*16, dimension( lda, * )A, integerLDA, complex, dimension( ldsa, * )SA, integerLDSA, integerINFO)

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

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 convertion is aborted and a flag is raised.

 This is an auxiliary routine so there is no argument checking.

Parameters:

UPLO

          UPLO is CHARACTER*1
          = 'U':  A is upper triangular;
          = 'L':  A is lower triangular.

N

          N is INTEGER
          The number of rows and columns of the matrix A.  N >= 0.

A

          A is COMPLEX*16 array, dimension (LDA,N)
          On entry, the N-by-N triangular coefficient matrix A.

LDA

          LDA is INTEGER
          The leading dimension of the array A.  LDA >= max(1,N).

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.

LDSA

          LDSA is INTEGER
          The leading dimension of the array SA.  LDSA >= max(1,M).

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.

Date:

September 2012

Definition at line 112 of file zlat2c.f.

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