dlat2s (l)  Linux Man Pages
dlat2s: converts a DOUBLE PRECISION triangular matrix, SA, to a SINGLE PRECISION triangular matrix, A
NAME
DLAT2S  converts a DOUBLE PRECISION triangular matrix, SA, to a SINGLE PRECISION triangular matrix, ASYNOPSIS
 SUBROUTINE DLAT2S(
 UPLO, N, A, LDA, SA, LDSA, INFO )
 CHARACTER UPLO
 INTEGER INFO, LDA, LDSA, N
 REAL SA( LDSA, * )
 DOUBLE PRECISION A( LDA, * )
PURPOSE
DLAT2S converts a DOUBLE PRECISION triangular matrix, SA, to a SINGLE PRECISION triangular matrix, A. RMAX is the overflow for the SINGLE PRECISION arithmeticDLAS2S 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
 UPLO (input) CHARACTER*1

= aqUaq: A is upper triangular;
= aqLaq: A is lower triangular.  N (input) INTEGER
 The number of rows and columns of the matrix A. N >= 0.
 A (input) DOUBLE PRECISION array, dimension (LDA,N)
 On entry, the NbyN triangular coefficient matrix A.
 LDA (input) INTEGER
 The leading dimension of the array A. LDA >= max(1,N).
 SA (output) REAL array, dimension (LDSA,N)
 Only the UPLO part of SA is referenced. On exit, if INFO=0, the NbyN coefficient matrix SA; if INFO>0, the content of the UPLO part 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 the UPLO part of SA in exit is unspecified. ========= End of DLAT2S