When argument B is a multidimensional array, the [I] index entry is used to specify

the coordinate acted on. If the index entry is omitted, the last coordinate (columns)

is acted on. If thm fB lform is used, the first coordinate is acted on. Indexing along a

nonexistent coordinate will result in INDEX ERROR.

When argument B is a multidimensional array, the coordinate of argument B that is

acted on is eliminated:

x.:i 4.. 2 3 p :I. 2 3 1.1. 5 4)

B

:I. 2 3

1.1 5 6

.4 ,/ E

4. / I:: 2 ::I b

4. / M

+ ,' I:: 1. ::I I4

B 4- 2 9 14. (3 1. 2 I)

E{

2 3 4

5 0 '7 €1

9 1. I) :I. 1. 1.2 123

6 :I. 5 -The last coordinate (columns) is assumed;

l) :I. 5

5 '7 9

5 '7 '9

therefore, the reduction is between columns:

1+2+3=6

The second coordinate (in this case, columns)

is specified.

The first coordinate (rows) is specified;

therefore, the reduction is between rows:

L

1

13 1.14 1. 5 :L 6

1. 7 :L 8 :I. 9 2 (1

2 1. 22 23 24

456

579

22 24. 26 2ti3 (planes) is specified;

therefore, the reduction

is between planes.

If argument B is an array that has a coordinate whose dimension is zero, then reduc-

tion along that coordinate yields an array whose elements are equal to .the identity

element for the function. The identity element for each function is given in the

preceding table.

112

the coordinate acted on. If the index entry is omitted, the last coordinate (columns)

is acted on. If thm fB lform is used, the first coordinate is acted on. Indexing along a

nonexistent coordinate will result in INDEX ERROR.

When argument B is a multidimensional array, the coordinate of argument B that is

acted on is eliminated:

x.:i 4.. 2 3 p :I. 2 3 1.1. 5 4)

B

:I. 2 3

1.1 5 6

.4 ,/ E

4. / I:: 2 ::I b

4. / M

+ ,' I:: 1. ::I I4

B 4- 2 9 14. (3 1. 2 I)

E{

2 3 4

5 0 '7 €1

9 1. I) :I. 1. 1.2 123

6 :I. 5 -The last coordinate (columns) is assumed;

l) :I. 5

5 '7 9

5 '7 '9

therefore, the reduction is between columns:

1+2+3=6

The second coordinate (in this case, columns)

is specified.

The first coordinate (rows) is specified;

therefore, the reduction is between rows:

L

1

13 1.14 1. 5 :L 6

1. 7 :L 8 :I. 9 2 (1

2 1. 22 23 24

456

579

22 24. 26 2ti3 (planes) is specified;

therefore, the reduction

is between planes.

If argument B is an array that has a coordinate whose dimension is zero, then reduc-

tion along that coordinate yields an array whose elements are equal to .the identity

element for the function. The identity element for each function is given in the

preceding table.

112