# dlag2s.f man page

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, 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 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.

**Date:**December 2016

Definition at line 110 of file dlag2s.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

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

Tue Nov 14 2017 Version 3.8.0 LAPACK