| External Interfaces/API Reference | |
C Syntax
#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, and false otherwise. 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. For additional information on the use of logical variables in MATLAB, type help logical at the MATLAB prompt.
Example
See mxislogical.c in the mx subdirectory of the examples directory.
See Also
| | mxIsInt32 | mxIsNaN | |