DLAT2S converts a double-precision triangular matrix to a single-precision triangular matrix.
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 conversion is aborted and a flag is raised. This is an auxiliary routine so there is no argument checking.
UPLO is CHARACTER*1 = 'U': A is upper triangular; = 'L': A is lower triangular.
N is INTEGER The number of rows and columns of the matrix A. N >= 0.
A is DOUBLE PRECISION array, dimension (LDA,N) On entry, the N-by-N triangular coefficient matrix A.
LDA is INTEGER The leading dimension of the array A. LDA >= max(1,N).
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 is INTEGER The leading dimension of the array SA. LDSA >= max(1,M).
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.
Univ. of California Berkeley
Univ. of Colorado Denver
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