ans = logical
1
You can perform logical and relational comparisons within the function call to any or all. This makes
it easy to quickly test an array for a variety of properties.
Determine if all elements in A are odd.
all(~A(:))
ans = logical
0
Determine whether any main or super diagonal elements in A are even. Since the vectors returned by
diag(A) and diag(A,1) are not the same size, you first need to reduce each diagonal to a single
scalar logical condition before comparing them. You can use the short-circuit OR operator || to
perform the comparison, since if any elements in the first diagonal are even then the entire
expression evaluates to true regardless of what appears on the right-hand side of the operator.
any(diag(A)) || any(diag(A,1))
ans = logical
1
See Also
any | all | and | or | xor | Logical Operators: Short Circuit
Reduce Logical Arrays to Single Value
5-7
1
You can perform logical and relational comparisons within the function call to any or all. This makes
it easy to quickly test an array for a variety of properties.
Determine if all elements in A are odd.
all(~A(:))
ans = logical
0
Determine whether any main or super diagonal elements in A are even. Since the vectors returned by
diag(A) and diag(A,1) are not the same size, you first need to reduce each diagonal to a single
scalar logical condition before comparing them. You can use the short-circuit OR operator || to
perform the comparison, since if any elements in the first diagonal are even then the entire
expression evaluates to true regardless of what appears on the right-hand side of the operator.
any(diag(A)) || any(diag(A,1))
ans = logical
1
See Also
any | all | and | or | xor | Logical Operators: Short Circuit
Reduce Logical Arrays to Single Value
5-7