--- rpl/lapack/lapack/dlag2s.f 2011/11/22 10:35:58 1.9 +++ rpl/lapack/lapack/dlag2s.f 2012/07/31 11:06:35 1.10 @@ -1,11 +1,118 @@ +*> \brief \b DLAG2S +* +* =========== DOCUMENTATION =========== +* +* Online html documentation available at +* http://www.netlib.org/lapack/explore-html/ +* +*> \htmlonly +*> Download DLAG2S + dependencies +*> +*> [TGZ] +*> +*> [ZIP] +*> +*> [TXT] +*> \endhtmlonly +* +* Definition: +* =========== +* +* SUBROUTINE DLAG2S( M, N, A, LDA, SA, LDSA, INFO ) +* +* .. Scalar Arguments .. +* INTEGER INFO, LDA, LDSA, M, N +* .. +* .. Array Arguments .. +* REAL SA( LDSA, * ) +* DOUBLE PRECISION A( LDA, * ) +* .. +* +* +*> \par Purpose: +* ============= +*> +*> \verbatim +*> +*> DLAG2S converts a DOUBLE PRECISION matrix, SA, to a SINGLE +*> PRECISION matrix, A. +*> +*> RMAX is the overflow for the SINGLE PRECISION arithmetic +*> DLAG2S 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. +*> \endverbatim +* +* Arguments: +* ========== +* +*> \param[in] M +*> \verbatim +*> M is INTEGER +*> The number of lines of the matrix A. M >= 0. +*> \endverbatim +*> +*> \param[in] N +*> \verbatim +*> N is INTEGER +*> The number of columns of the matrix A. N >= 0. +*> \endverbatim +*> +*> \param[in] A +*> \verbatim +*> A is DOUBLE PRECISION array, dimension (LDA,N) +*> On entry, the M-by-N coefficient matrix A. +*> \endverbatim +*> +*> \param[in] LDA +*> \verbatim +*> LDA is INTEGER +*> The leading dimension of the array A. LDA >= max(1,M). +*> \endverbatim +*> +*> \param[out] SA +*> \verbatim +*> SA is REAL array, dimension (LDSA,N) +*> On exit, if INFO=0, the M-by-N coefficient matrix SA; if +*> INFO>0, the content of SA is unspecified. +*> \endverbatim +*> +*> \param[in] LDSA +*> \verbatim +*> LDSA is INTEGER +*> The leading dimension of the array SA. LDSA >= max(1,M). +*> \endverbatim +*> +*> \param[out] INFO +*> \verbatim +*> 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 SA in exit is unspecified. +*> \endverbatim +* +* Authors: +* ======== +* +*> \author Univ. of Tennessee +*> \author Univ. of California Berkeley +*> \author Univ. of Colorado Denver +*> \author NAG Ltd. +* +*> \date November 2011 +* +*> \ingroup doubleOTHERauxiliary +* +* ===================================================================== SUBROUTINE DLAG2S( M, N, A, LDA, SA, LDSA, INFO ) * -* -- LAPACK PROTOTYPE auxiliary routine (version 3.3.1) -- +* -- LAPACK auxiliary routine (version 3.4.0) -- * -- LAPACK is a software package provided by Univ. of Tennessee, -- * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- -* -- April 2011 -- +* November 2011 * -* .. * .. Scalar Arguments .. INTEGER INFO, LDA, LDSA, M, N * .. @@ -14,46 +121,6 @@ DOUBLE PRECISION A( LDA, * ) * .. * -* Purpose -* ======= -* -* DLAG2S converts a DOUBLE PRECISION matrix, SA, to a SINGLE -* PRECISION matrix, A. -* -* RMAX is the overflow for the SINGLE PRECISION arithmetic -* DLAG2S 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 -* ========= -* -* M (input) INTEGER -* The number of lines of the matrix A. M >= 0. -* -* N (input) INTEGER -* The number of columns of the matrix A. N >= 0. -* -* A (input) DOUBLE PRECISION array, dimension (LDA,N) -* On entry, the M-by-N coefficient matrix A. -* -* LDA (input) INTEGER -* The leading dimension of the array A. LDA >= max(1,M). -* -* SA (output) REAL array, dimension (LDSA,N) -* On exit, if INFO=0, the M-by-N coefficient matrix SA; if -* INFO>0, the content 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 SA in exit is unspecified. -* * ===================================================================== * * .. Local Scalars ..