LAPACK
3.4.2
LAPACK: Linear Algebra PACKage

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Functions/Subroutines  
subroutine  dlat2s (UPLO, N, A, LDA, SA, LDSA, INFO) 
DLAT2S converts a doubleprecision triangular matrix to a singleprecision triangular matrix. 
subroutine dlat2s  (  character  UPLO, 
integer  N,  
double precision, dimension( lda, * )  A,  
integer  LDA,  
real, dimension( ldsa, * )  SA,  
integer  LDSA,  
integer  INFO  
) 
DLAT2S converts a doubleprecision triangular matrix to a singleprecision triangular matrix.
Download DLAT2S + dependencies [TGZ] [ZIP] [TXT]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.
[in]  UPLO  UPLO is CHARACTER*1 = 'U': A is upper triangular; = 'L': A is lower triangular. 
[in]  N  N is INTEGER The number of rows and columns of the matrix A. N >= 0. 
[in]  A  A is DOUBLE PRECISION array, dimension (LDA,N) On entry, the NbyN triangular coefficient matrix A. 
[in]  LDA  LDA is INTEGER The leading dimension of the array A. LDA >= max(1,N). 
[out]  SA  SA 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. 
[in]  LDSA  LDSA is INTEGER The leading dimension of the array SA. LDSA >= max(1,M). 
[out]  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. 
Definition at line 112 of file dlat2s.f.