islogical

Determine if input is logical array

Syntax

tf = islogical(A)


Description

tf = islogical(A) returns true if A is a logical array and false otherwise. islogical also returns true if A is an instance of a class that is derived from the logical class.

Examples

These examples show the values islogical returns when passed specific types:

% Relational operators return logical values
islogical(5<7)
ans =
     1

% true and false return logical values
islogical(true) & islogical(false)
ans =
     1

% Constants are double-precision by default
islogical(1)
ans =
     0

% logical creates logical values
islogical(logical(1))
ans =
     1

Extended Capabilities

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

GPU Code Generation
Generate CUDA® code for NVIDIA® GPUs using GPU Coder™.

Thread-Based Environment

Run code in the background using MATLAB® backgroundPool or accelerate code with Parallel Computing Toolbox™ ThreadPool.

This function fully supports thread-based environments. For more information, see Run MATLAB Functions in Thread-Based Environment.

GPU Arrays

Accelerate code by running on a graphics processing unit (GPU) using Parallel Computing Toolbox™.

The islogical function fully supports GPU arrays. To run the function on a GPU, specify the input data as a gpuArray (Parallel Computing Toolbox). For more information, see Run MATLAB Functions on a GPU (Parallel Computing Toolbox).

Distributed Arrays

Partition large arrays across the combined memory of your cluster using Parallel Computing Toolbox™.

This function fully supports distributed arrays. For more information, see Run MATLAB Functions with Distributed Arrays (Parallel Computing Toolbox).

Version History

Introduced before R2006a