Documentation

This is machine translation

Translated by Microsoft
Mouseover text to see original. Click the button below to return to the English verison of the page.

Note: This page has been translated by MathWorks. Please click here
To view all translated materals including this page, select Japan from the country navigator on the bottom of this page.

and, &

Find logical AND

Syntax

A & B
and(A,B)

Description

example

A & B performs a logical AND of arrays A and B and returns an array containing elements set to either logical 1 (true) or logical 0 (false). An element of the output array is set to logical 1 (true) if both A and B contain a nonzero element at that same array location. Otherwise, the array element is set to 0.

and(A,B) is an alternate way to execute A & B, but is rarely used. It enables operator overloading for classes.

Examples

collapse all

Find the logical AND of two matrices. The result contains logical 1 (true) only where both matrices contain nonzero values.

A = [5 7 0; 0 2 9; 5 0 0]
A = 

     5     7     0
     0     2     9
     5     0     0

B = [6 6 0; 1 3 5; -1 0 0]
B = 

     6     6     0
     1     3     5
    -1     0     0

A & B
ans = 3×3 logical array
   1   1   0
   0   1   1
   1   0   0

Create a truth table for and.

A = [true false]
A = 1×2 logical array
   1   0

B = [true; false]
B = 2×1 logical array
   1
   0

C = A&B
C = 2×2 logical array
   1   0
   0   0

Input Arguments

collapse all

Left operand, specified as a scalar, vector, matrix, or multidimensional array. Inputs A and B must either be the same size or have sizes that are compatible (for example, A is an M-by-N matrix and B is a scalar or 1-by-N row vector). For more information, see Compatible Array Sizes for Basic Operations.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | logical

Right operand, specified as a scalar, vector, matrix, or multidimensional array. Inputs A and B must either be the same size or have sizes that are compatible (for example, A is an M-by-N matrix and B is a scalar or 1-by-N row vector). For more information, see Compatible Array Sizes for Basic Operations.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | logical

Tips

  • You can chain together several logical operations, for example, A & B | C.

  • The symbols & and && perform different operations in MATLAB®. The element-wise AND operator described here is &. The short-circuit AND operator is &&. See Logical Operators: Short Circuit for more information.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

Introduced before R2006a

Was this topic helpful?