and

Scilab Function
Last update : April 1993

and - (&) logical and

### Calling Sequence

  `b=and(A), b=and(A,'*')`
  `b=and(A,'r'), b=and(A,1)`
  `b=and(A,'c'), b=and(A,2)`
  `A&B`

### Description

`and(A)` is the logical AND of elements of the boolean matrix `A`. `and(A)` returns `%T` ("true") iff all entries of `A` are `%T`.

`y=and(A,'r')` (or, equivalently, `y=and(A,1)`) is the rowwise and. It returns in each entry of the row vector `y` the and of the rows of `x` (The and is performed on the row index : `y(j)= and(A(i,j),i=1,m)`).

`y=and(A,'c')` (or, equivalently, `y=and(A,2)`) is the columnwise and. It returns in each entry of the column vector `y` the and of the columns of `x` (The and is performed on the column index: `y(i)= and(A(i,j),j=1,n)`)).

`A&B` gives the element-wise logical `and` of the booleans matrices `A` and `B` .`A` and `B` must be matrices with the same dimensions or one from them must be a single boolean.

### See Also

`not`, `or`,