SAS Component Language Dictionary

COMPAREARRAY

Allows you to compare two arrays for size and data equality

Category:

Array

Syntax
Details
Example
See Also

Syntax

rc=COMPAREARRAY(array1,array2);

rc

indicates whether the two arrays match.

0	arrays match
1	arrays do not match

Type: Numeric

array1

is one of the two arrays to be compared.

Type: Array

array2

is one of the two arrays to be compared.

Type: Array

Details

The COMPAREARRAY function allows you to compare two arrays for size and data equality. To be considered equal, the arrays must:

have the same number of dimensions
be of the same type
have the same bounds
have the same values in each element.

Example

This example compares several different arrays.

DCL num n1(5) n2(5,5) n3(*) n4(5) n5(*,*);
DCL char c1(5);
DCL num rc;

rc = comparearray(n1,n2); put rc=;
rc = comparearray(n1,c1); put rc=;
rc = comparearray(n1,n3); put rc=;
n3 = makearray(3);
rc = comparearray(n1,n3); put rc=;
rc = redim(n3,5);
rc = comparearray(n1,n3); put rc=;
do i=1 to 5;
   n1[i] = i;
   n4[i] = i;
end;

rc = comparearray(n1,n4); put rc=;
rc = copyarray(n2,n5);
rc = comparearray(n2,n5); put rc=;
rc = delarray (n3); rc = delarray (n5);

The output for this code would be:

rc=1
rc=1
rc=1
rc=1
rc=0
rc=0
rc=0