Visible to Intel only — GUID: GUID-EE5B523E-7A7F-4571-84A4-13D4295BF0B2
Visible to Intel only — GUID: GUID-EE5B523E-7A7F-4571-84A4-13D4295BF0B2
p?copy
Copies one distributed vector to another vector.
Syntax
call pscopy(n, x, ix, jx, descx, incx, y, iy, jy, descy, incy)
call pdcopy(n, x, ix, jx, descx, incx, y, iy, jy, descy, incy)
call pccopy(n, x, ix, jx, descx, incx, y, iy, jy, descy, incy)
call pzcopy(n, x, ix, jx, descx, incx, y, iy, jy, descy, incy)
call picopy(n, x, ix, jx, descx, incx, y, iy, jy, descy, incy)
Include Files
- mkl_pblas.h
Description
The p?copy routines perform a copy operation with distributed vectors defined as
sub(y) = sub(x),
where sub(x) and sub(y) are n-element distributed vectors.
sub(x) denotes X(ix, jx:jx+n-1) if incx=m_x, and X(ix: ix+n-1, jx) if incx= 1;
sub(y) denotes Y(iy, jy:jy+n-1) if incy=m_y, and Y(iy: iy+n-1, jy) if incy= 1.
Input Parameters
- n
-
(global) INTEGER. The length of distributed vectors, n≥0.
- x
-
(local) REAL for pscopy
DOUBLE PRECISION for pdcopy
COMPLEX for pccopy
DOUBLE COMPLEX for pzcopy
INTEGER for picopy
Array, size (jx-1)*m_x + ix+(n-1)*abs(incx)).
This array contains the entries of the distributed vector sub(x).
- ix, jx
-
(global) INTEGER. The row and column indices in the distributed matrix X indicating the first row and the first column of the submatrix sub(X), respectively.
- descx
-
(global and local) INTEGER array of dimension 9. The array descriptor of the distributed matrix X.
- incx
-
(global) INTEGER. Specifies the increment for the elements of sub(x). Only two values are supported, namely 1 and m_x. incx must not be zero.
- y
-
(local) REAL for pscopy
DOUBLE PRECISION for pdcopy
COMPLEX for pccopy
DOUBLE COMPLEX for pzcopy
INTEGER for picopy
Array, size (jy-1)*m_y + iy+(n-1)*abs(incy)).
This array contains the entries of the distributed vector sub(y).
- iy, jy
-
(global) INTEGER. The row and column indices in the distributed matrix Y indicating the first row and the first column of the submatrix sub(Y), respectively.
- descy
-
(global and local) INTEGER array of dimension 9. The array descriptor of the distributed matrix Y.
- incy
-
(global) INTEGER. Specifies the increment for the elements of sub(y). Only two values are supported, namely 1 and m_y. incy must not be zero.
Output Parameters
- y
-
Overwritten with the distributed vector sub(x).