lascl2(3) Library Functions Manual lascl2(3)

lascl2 - lascl2: diagonal scale matrix, A = D A


subroutine clascl2 (m, n, d, x, ldx)
CLASCL2 performs diagonal scaling on a matrix. subroutine dlascl2 (m, n, d, x, ldx)
DLASCL2 performs diagonal scaling on a matrix. subroutine slascl2 (m, n, d, x, ldx)
SLASCL2 performs diagonal scaling on a matrix. subroutine zlascl2 (m, n, d, x, ldx)
ZLASCL2 performs diagonal scaling on a matrix.

CLASCL2 performs diagonal scaling on a matrix.

Purpose:

 CLASCL2 performs a diagonal scaling on a matrix:
   x <-- D * x
 where the diagonal REAL matrix D is stored as a matrix.
 Eventually to be replaced by BLAS_cge_diag_scale in the new BLAS
 standard.

Parameters

M 
          M is INTEGER
     The number of rows of D and X. M >= 0.

N

          N is INTEGER
     The number of columns of X. N >= 0.

D

          D is REAL array, length M
     Diagonal matrix D, stored as a vector of length M.

X

          X is COMPLEX array, dimension (LDX,N)
     On entry, the matrix X to be scaled by D.
     On exit, the scaled matrix.

LDX

          LDX is INTEGER
     The leading dimension of the matrix X. LDX >= M.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 90 of file clascl2.f.

DLASCL2 performs diagonal scaling on a matrix.

Purpose:

 DLASCL2 performs a diagonal scaling on a matrix:
   x <-- D * x
 where the diagonal matrix D is stored as a vector.
 Eventually to be replaced by BLAS_dge_diag_scale in the new BLAS
 standard.

Parameters

M 
          M is INTEGER
     The number of rows of D and X. M >= 0.

N

          N is INTEGER
     The number of columns of X. N >= 0.

D

          D is DOUBLE PRECISION array, length M
     Diagonal matrix D, stored as a vector of length M.

X

          X is DOUBLE PRECISION array, dimension (LDX,N)
     On entry, the matrix X to be scaled by D.
     On exit, the scaled matrix.

LDX

          LDX is INTEGER
     The leading dimension of the matrix X. LDX >= M.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 89 of file dlascl2.f.

SLASCL2 performs diagonal scaling on a matrix.

Purpose:

 SLASCL2 performs a diagonal scaling on a matrix:
   x <-- D * x
 where the diagonal matrix D is stored as a vector.
 Eventually to be replaced by BLAS_sge_diag_scale in the new BLAS
 standard.

Parameters

M 
          M is INTEGER
     The number of rows of D and X. M >= 0.

N

          N is INTEGER
     The number of columns of X. N >= 0.

D

          D is REAL array, length M
     Diagonal matrix D, stored as a vector of length M.

X

          X is REAL array, dimension (LDX,N)
     On entry, the matrix X to be scaled by D.
     On exit, the scaled matrix.

LDX

          LDX is INTEGER
     The leading dimension of the matrix X. LDX >= M.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 89 of file slascl2.f.

ZLASCL2 performs diagonal scaling on a matrix.

Purpose:

 ZLASCL2 performs a diagonal scaling on a matrix:
   x <-- D * x
 where the DOUBLE PRECISION diagonal matrix D is stored as a vector.
 Eventually to be replaced by BLAS_zge_diag_scale in the new BLAS
 standard.

Parameters

M 
          M is INTEGER
     The number of rows of D and X. M >= 0.

N

          N is INTEGER
     The number of columns of X. N >= 0.

D

          D is DOUBLE PRECISION array, length M
     Diagonal matrix D, stored as a vector of length M.

X

          X is COMPLEX*16 array, dimension (LDX,N)
     On entry, the matrix X to be scaled by D.
     On exit, the scaled matrix.

LDX

          LDX is INTEGER
     The leading dimension of the matrix X. LDX >= M.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 90 of file zlascl2.f.

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