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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.