
NAMEzlascl.f SYNOPSISFunctions/Subroutinessubroutine zlascl (TYPE, KL, KU, CFROM, CTO, M, N, A, LDA, INFO) Function/Subroutine Documentationsubroutine zlascl (characterTYPE, integerKL, integerKU, double precisionCFROM, double precisionCTO, integerM, integerN, complex*16, dimension( lda, * )A, integerLDA, integerINFO)ZLASCL multiplies a general rectangular matrix by a real scalar defined as cto/cfrom. Purpose:ZLASCL 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. TYPE
Author:
TYPE is 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. See ZGBTRF for storage details.KL KL is INTEGER The lower bandwidth of A. Referenced only if TYPE = 'B', 'Q' or 'Z'.KU KU is INTEGER The upper bandwidth of A. Referenced only if TYPE = 'B', 'Q' or 'Z'.CFROM CFROM is DOUBLE PRECISIONCTO CTO is 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 M is INTEGER The number of rows of the matrix A. M >= 0.N N is INTEGER The number of columns of the matrix A. N >= 0.A A is COMPLEX*16 array, dimension (LDA,N) The matrix to be multiplied by CTO/CFROM. See TYPE for the storage type.LDA LDA is INTEGER The leading dimension of the array A. LDA >= max(1,M).INFO INFO is INTEGER 0  successful exit <0  if INFO = i, the ith argument had an illegal value. Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
September 2012
Definition at line 140 of file zlascl.f.
AuthorGenerated automatically by Doxygen for LAPACK from the source code.
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