zlat2c (3) - Linux Manuals
subroutine zlat2c (characterUPLO, integerN, complex*16, dimension( lda, * )A, integerLDA, complex, dimension( ldsa, * )SA, integerLDSA, integerINFO)
ZLAT2C converts a double complex triangular matrix to a complex triangular matrix.
ZLAT2C converts a COMPLEX*16 triangular matrix, SA, to a COMPLEX triangular matrix, A. RMAX is the overflow for the SINGLE PRECISION arithmetic ZLAT2C 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.
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 COMPLEX*16 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 COMPLEX 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 Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
- September 2012
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