LAPACK
3.4.2
LAPACK: Linear Algebra PACKage

Go to the source code of this file.
Functions/Subroutines  
subroutine  clascl (TYPE, KL, KU, CFROM, CTO, M, N, A, LDA, INFO) 
CLASCL multiplies a general rectangular matrix by a real scalar defined as cto/cfrom. 
subroutine clascl  (  character  TYPE, 
integer  KL,  
integer  KU,  
real  CFROM,  
real  CTO,  
integer  M,  
integer  N,  
complex, dimension( lda, * )  A,  
integer  LDA,  
integer  INFO  
) 
CLASCL multiplies a general rectangular matrix by a real scalar defined as cto/cfrom.
Download CLASCL + dependencies [TGZ] [ZIP] [TXT]CLASCL 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.
[in]  TYPE  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 CGBTRF for storage details. 
[in]  KL  KL is INTEGER The lower bandwidth of A. Referenced only if TYPE = 'B', 'Q' or 'Z'. 
[in]  KU  KU is INTEGER The upper bandwidth of A. Referenced only if TYPE = 'B', 'Q' or 'Z'. 
[in]  CFROM  CFROM is REAL 
[in]  CTO  CTO is REAL 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. 
[in]  M  M is INTEGER The number of rows of the matrix A. M >= 0. 
[in]  N  N is INTEGER The number of columns of the matrix A. N >= 0. 
[in,out]  A  A is COMPLEX array, dimension (LDA,N) The matrix to be multiplied by CTO/CFROM. See TYPE for the storage type. 
[in]  LDA  LDA is INTEGER The leading dimension of the array A. LDA >= max(1,M). 
[out]  INFO  INFO is INTEGER 0  successful exit <0  if INFO = i, the ith argument had an illegal value. 
Definition at line 140 of file clascl.f.