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# LAPACK-3

## man page of LAPACK-3

### LAPACK-3: converts a COMPLEX*16 triangular matrix, SA, to a COMPLEX triangular matrix, A

```NAME
LAPACK-3  -  converts  a COMPLEX*16 triangular matrix, SA, to a COMPLEX
triangular matrix, A

SYNOPSIS
SUBROUTINE ZLAT2C( UPLO, N, A, LDA, SA, LDSA, INFO )

CHARACTER      UPLO

INTEGER        INFO, LDA, LDSA, N

COMPLEX        SA( LDSA, * )

COMPLEX*16     A( LDA, * )

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.

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

N       (input) INTEGER
The number of rows and columns of the matrix A.  N >= 0.

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

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

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

INFO    (output) 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.
=========
.. Local Scalars ..
..
.. Intrinsic Functions ..
..
.. External Functions ..
..
.. Executable Statements ..
End of ZLAT2C

LAPACK PROTOTYPE auxiliary routinMarchr2011 3.1.2)                LAPACK-3(3)
```

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