F06DFF (PDF version)
F06 Chapter Contents
F06 Chapter Introduction
NAG Library Manual

NAG Library Routine Document

F06DFF

Note:  before using this routine, please read the Users' Note for your implementation to check the interpretation of bold italicised terms and other implementation-dependent details.

 Contents

    1  Purpose
    7  Accuracy
    10  Example

1  Purpose

F06DFF copies an integer vector.

2  Specification

SUBROUTINE F06DFF ( N, X, INCX, Y, INCY)
INTEGER  N, X(*), INCX, Y(*), INCY

3  Description

F06DFF performs the operation
yx  
where x and y are n-element integer vectors scattered with stride INCX and INCY respectively.

4  References

None.

5  Arguments

1:     N – INTEGERInput
On entry: n, the number of elements in x and y.
2:     X* – INTEGER arrayInput
Note: the dimension of the array X must be at least max1, 1+N-1 ×INCX .
On entry: the n-element vector x.
If INCX>0, xi must be stored in X1+i-1×INCX, for i=1,2,,N.
If INCX<0, xi must be stored in X1-N-i×INCX, for i=1,2,,N.
Intermediate elements of X are not referenced.
3:     INCX – INTEGERInput
On entry: the increment in the subscripts of X between successive elements of x.
4:     Y* – INTEGER arrayOutput
Note: the dimension of the array Y must be at least max1, 1+N-1 ×INCY .
On exit: the vector y.
If INCY>0, yi will be stored in Y1+i-1×INCY, for i=1,2,,N.
If INCY<0, yi will be stored in Y1-N-i×INCY, for i=1,2,,N.
Intermediate elements of Y are unchanged.
5:     INCY – INTEGERInput
On entry: the increment in the subscripts of Y between successive elements of y.

6  Error Indicators and Warnings

None.

7  Accuracy

Not applicable.

8  Parallelism and Performance

F06DFF is not threaded in any implementation.

9  Further Comments

None.

10  Example

None.

F06DFF (PDF version)
F06 Chapter Contents
F06 Chapter Introduction
NAG Library Manual

© The Numerical Algorithms Group Ltd, Oxford, UK. 2016