NAME

       dlat2s.f -

SYNOPSIS

   Functions/Subroutines
       subroutine dlat2s (UPLO, N, A, LDA, SA, LDSA, INFO)
           DLAT2S converts a double-precision triangular matrix to a single-precision triangular
           matrix.

Function/Subroutine Documentation

   subroutine dlat2s (characterUPLO, integerN, double precision, dimension( lda, * )A,
       integerLDA, real, dimension( ldsa, * )SA, integerLDSA, integerINFO)
       DLAT2S converts a double-precision triangular matrix to a single-precision triangular
       matrix.

       Purpose:

            DLAT2S converts a DOUBLE PRECISION triangular matrix, SA, to a SINGLE
            PRECISION triangular matrix, A.

            RMAX is the overflow for the SINGLE PRECISION arithmetic
            DLAS2S 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.

       Parameters:
           UPLO

                     UPLO is CHARACTER*1
                     = 'U':  A is upper triangular;
                     = 'L':  A is lower triangular.

           N

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

           A

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

           LDA

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

           SA

                     SA is REAL array, dimension (LDSA,N)
                     Only the UPLO part of SA is referenced.  On exit, if INFO=0,
                     the N-by-N coefficient matrix SA; if INFO>0, the content of
                     the UPLO part 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 the UPLO part of SA in exit is unspecified.

       Author:
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Date:
           September 2012

       Definition at line 112 of file dlat2s.f.

Author

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