Converts 'value' to an int and returns it. If nearestNeighbor is true, the return value is the result of calling 'static_cast<int>(round(value))'; if

returns 2025 combinations of "A blend B = C", iterating over one color component and over alpha component

Throws an exception of type: - bad_alloc : If the value of s is CAIRO_STATUS_NO_MEMORY. - runtime_error : If s is any other value, excluding CAIRO_S

* Draws the following pattern: * BWBW * WBWB * BWBW * WBWB */