int H3_EXPORT()

in h3_directedEdge.c [189:206]

• 15 lines of code
• 5 McCabe index (conditional complexity)

int H3_EXPORT(isValidDirectedEdge)(H3Index edge) {
    Direction neighborDirection = H3_GET_RESERVED_BITS(edge);
    if (neighborDirection <= CENTER_DIGIT || neighborDirection >= NUM_DIGITS) {
        return 0;
    }

    H3Index origin;
    // Note: This call is also checking for H3_DIRECTEDEDGE_MODE
    H3Error originResult = H3_EXPORT(getDirectedEdgeOrigin)(edge, &origin);
    if (originResult) {
        return 0;
    }
    if (H3_EXPORT(isPentagon)(origin) && neighborDirection == K_AXES_DIGIT) {
        return 0;
    }

    return H3_EXPORT(isValidCell)(origin);
}