MATLAB Application Program Interface Reference

True if mxArray is Boolean

#include "matrix.h"
bool mxIsLogical(const mxArray *array_ptr);

Arguments

array_ptr

Pointer to an mxArray.

Returns

true if the mxArray's logical flag is on; otherwise, returns false. If an mxArray does not hold numerical data (for instance, if array_ptr points to a structure mxArray or a cell mxArray), then mxIsLogical automatically returns False.

Description

Use mxIsLogical to determine whether MATLAB treats the data in the mxArray as Boolean (logical) or numerical (not logical).

If an mxArray is logical, then MATLAB treats all zeros as meaning false and all nonzero values as meaning true.