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/home/abuild/rpmbuild/BUILD/lapack-3.12.0/SRC/dlag2s.f(3) Library Functions Manual /home/abuild/rpmbuild/BUILD/lapack-3.12.0/SRC/dlag2s.f(3)

NAME

/home/abuild/rpmbuild/BUILD/lapack-3.12.0/SRC/dlag2s.f

SYNOPSIS

Functions/Subroutines


subroutine DLAG2S (m, n, a, lda, sa, ldsa, info)
DLAG2S converts a double precision matrix to a single precision matrix.

Function/Subroutine Documentation

subroutine DLAG2S (integer m, integer n, double precision, dimension( lda, * ) a, integer lda, real, dimension( ldsa, * ) sa, integer ldsa, integer info)

DLAG2S converts a double precision matrix to a single precision matrix.

Purpose:

!>
!> DLAG2S converts a DOUBLE PRECISION matrix, A, to a SINGLE
!> PRECISION matrix, SA.
!>
!> 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 conversion is aborted and a flag is raised.
!>
!> This is an auxiliary routine so there is no argument checking.
!>

Parameters

M 

!>          M is INTEGER
!>          The number of lines of the matrix A.  M >= 0.
!>

N

!>          N is INTEGER
!>          The number of columns of the matrix A.  N >= 0.
!>

A

!>          A is DOUBLE PRECISION array, dimension (LDA,N)
!>          On entry, the M-by-N coefficient matrix A.
!>

LDA

!>          LDA is INTEGER
!>          The leading dimension of the array A.  LDA >= max(1,M).
!>

SA

!>          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.
!>

LDSA

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

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 SA in exit is unspecified.
!>

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 107 of file dlag2s.f.

Author

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Version 3.12.0 LAPACK