dlag2s.f - Man Page

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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Referenced By

The man page dlag2s(3) is an alias of dlag2s.f(3).

Tue Nov 28 2023 12:08:42 Version 3.12.0 LAPACK