slag2d()

subroutine slag2d	(	integer	m,
		integer	n,
		real, dimension( ldsa, * )	sa,
		integer	ldsa,
		double precision, dimension( lda, * )	a,
		integer	lda,
		integer	info )

SLAG2D converts a single precision matrix to a double precision matrix.

Download SLAG2D + dependencies [TGZ] [ZIP] [TXT]

Purpose:

!>
!> SLAG2D converts a SINGLE PRECISION matrix, SA, to a 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 an auxiliary routine so there is no argument checking.
!> 

Parameters

[in]	M	!> M is INTEGER !> The number of lines of the matrix A. M >= 0. !>
[in]	N	!> N is INTEGER !> The number of columns of the matrix A. N >= 0. !>
[in]	SA	!> SA is REAL array, dimension (LDSA,N) !> On entry, the M-by-N coefficient matrix SA. !>
[in]	LDSA	!> LDSA is INTEGER !> The leading dimension of the array SA. LDSA >= max(1,M). !>
[out]	A	!> A is DOUBLE PRECISION array, dimension (LDA,N) !> On exit, the M-by-N coefficient matrix A. !>
[in]	LDA	!> LDA is INTEGER !> The leading dimension of the array A. LDA >= max(1,M). !>
[out]	INFO	!> INFO is INTEGER !> = 0: successful exit !>

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 101 of file slag2d.f.

*
*  -- LAPACK auxiliary routine --
*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
*
*     .. Scalar Arguments ..
      INTEGER            INFO, LDA, LDSA, M, N
*     ..
*     .. Array Arguments ..
      REAL               SA( LDSA, * )
      DOUBLE PRECISION   A( LDA, * )
*     ..
*
*  =====================================================================
*
*     .. Local Scalars ..
      INTEGER            I, J
*     ..
*     .. Executable Statements ..
*
      info = 0
      DO 20 j = 1, n
         DO 10 i = 1, m
            a( i, j ) = sa( i, j )
   10    CONTINUE
   20 CONTINUE
      RETURN
*
*     End of SLAG2D
*

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