# clag2z

Converts a complex single precision matrix to a complex double precision matrix.

## Syntax

call clag2z( m, n, sa, ldsa, a, lda, info )

## Description

The routine converts a complex single precision matrix SA to a complex double precision matrix A.

Note that while it is possible to overflow while converting from double to single, it is not possible to overflow when converting from single to double.

This is a helper routine so there is no argument checking.

## Input Parameters

m

  INTEGER. The number of lines of the matrix A (`m ≥ 0`).

n

  INTEGER. The number of columns in the matrix A (`n ≥ 0`).

ldsa

  INTEGER. The leading dimension of the array sa; ldsa ≥ max(1, m).

a

  DOUBLE PRECISION array, DIMENSION (lda, n).

  On entry, contains the m-by-n coefficient matrix A.

lda

  INTEGER. The leading dimension of the array a; lda ≥ max(1, m).

## Output Parameters

sa

  REAL array, DIMENSION (ldsa, n).

  On exit, contains the m-by-n coefficient matrix SA.

info

  INTEGER.

  If `info = 0`, the execution is successful.

Parent topic: Auxiliary Routines