dlat2s.f (3)  Linux Manuals
NAME
dlat2s.f 
SYNOPSIS
Functions/Subroutines
subroutine dlat2s (UPLO, N, A, LDA, SA, LDSA, INFO)
DLAT2S converts a doubleprecision triangular matrix to a singleprecision triangular matrix.
Function/Subroutine Documentation
subroutine dlat2s (characterUPLO, integerN, double precision, dimension( lda, * )A, integerLDA, real, dimension( ldsa, * )SA, integerLDSA, integerINFO)
DLAT2S converts a doubleprecision triangular matrix to a singleprecision 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.
NN is INTEGER The number of rows and columns of the matrix A. N >= 0.
AA is DOUBLE PRECISION array, dimension (LDA,N) On entry, the NbyN triangular coefficient matrix A.
LDALDA is INTEGER The leading dimension of the array A. LDA >= max(1,N).
SASA is 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.
LDSALDSA is INTEGER The leading dimension of the array SA. LDSA >= max(1,M).
INFOINFO 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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