---
name: "dlag2s"
section: "3lapack"
platform: "linux"
package: "liblapack-doc"
version: "3.2.1-8"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/dlag2s/3lapack"
---

# dlag2s(3lapack)

converts a DOUBLE PRECISION matrix, SA, to a SINGLE PRECISION matrix, A

## NAME

DLAG2S - converts a DOUBLE PRECISION matrix, SA, to a SINGLE PRECISION matrix, A

## SYNOPSIS

- SUBROUTINE DLAG2S(

  M, N, A, LDA, SA, LDSA, INFO )

- INTEGER

  INFO, LDA, LDSA, M, N

- REAL

  SA( LDSA, \* )

- 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. ========= End of DLAG2S