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.

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.

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

September 2012