function readBooleanFromPointer(cAddress, offset = 0) {
    const val = C.getValue(cAddress + SZ_INT * offset, 'i32');
    return Boolean(val);
}
Read a boolean (32 bit) from a pointer to C memory.
@private
@param  {number} cAddress  Pointer to allocated C memory
@param {number} offset     Offset, in number of booleans, in case we're
                           reading an array
@return {Boolean} Boolean value