ZLASCL - Online Linux Manual Page

Section : 1
Updated : November 2008
Source : LAPACK auxiliary routine (version 3.2)
Note : LAPACK auxiliary routine (version 3.2)
NAMEZLASCL - multiplies the M by N complex matrix A by the real scalar CTO/CFROM
SYNOPSISSUBROUTINE ZLASCL(  TYPE, KL, KU, CFROM, CTO, M, N, A, LDA, INFO )  CHARACTER TYPE  INTEGER INFO, KL, KU, LDA, M, N  DOUBLE PRECISION CFROM, CTO  COMPLEX*16 A( LDA, * )
PURPOSEZLASCL multiplies the M by N complex matrix A by the real scalar CTO/CFROM. This is done without over/underflow as long as the final result CTO*A(I,J)/CFROM does not over/underflow. TYPE specifies that A may be full, upper triangular, lower triangular, upper Hessenberg, or banded.
ARGUMENTSTYPE (input) CHARACTER*1  TYPE indices the storage type of the input matrix. = 'G': A is a full matrix.
= 'L': A is a lower triangular matrix.
= 'U': A is an upper triangular matrix.
= 'H': A is an upper Hessenberg matrix.
= 'B': A is a symmetric band matrix with lower bandwidth KL and upper bandwidth KU and with the only the lower half stored. = 'Q': A is a symmetric band matrix with lower bandwidth KL and upper bandwidth KU and with the only the upper half stored. = 'Z': A is a band matrix with lower bandwidth KL and upper bandwidth KU. KL (input) INTEGER  The lower bandwidth of A. Referenced only if TYPE = 'B', 'Q' or 'Z'. KU (input) INTEGER  The upper bandwidth of A. Referenced only if TYPE = 'B', 'Q' or 'Z'. CFROM (input) DOUBLE PRECISION  CTO (input) DOUBLE PRECISION The matrix A is multiplied by CTO/CFROM. A(I,J) is computed without over/underflow if the final result CTO*A(I,J)/CFROM can be represented without over/underflow. CFROM must be nonzero. M (input) INTEGER  The number of rows of the matrix A. M >= 0. N (input) INTEGER  The number of columns of the matrix A. N >= 0. A (input/output) COMPLEX*16 array, dimension (LDA,N)  The matrix to be multiplied by CTO/CFROM. See TYPE for the storage type. LDA (input) INTEGER  The leading dimension of the array A. LDA >= max(1,M). INFO (output) INTEGER  0 - successful exit <0 - if INFO = -i, the i-th argument had an illegal value. 0
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