void H3_EXPORT()

in src/h3lib/lib/h3Index.c [220:243]

• 24 lines of code
• 7 McCabe index (conditional complexity)

void H3_EXPORT(h3ToChildren)(H3Index h, int childRes, H3Index* children) {
    int parentRes = H3_GET_RESOLUTION(h);
    if (!_isValidChildRes(parentRes, childRes)) {
        return;
    } else if (parentRes == childRes) {
        *children = h;
        return;
    }
    int bufferSize = H3_EXPORT(maxH3ToChildrenSize)(h, childRes);
    int bufferChildStep = (bufferSize / 7);
    int isAPentagon = H3_EXPORT(h3IsPentagon)(h);
    for (int i = 0; i < 7; i++) {
        if (isAPentagon && i == K_AXES_DIGIT) {
            H3Index* nextChild = children + bufferChildStep;
            while (children < nextChild) {
                *children = H3_NULL;
                children++;
            }
        } else {
            H3_EXPORT(h3ToChildren)(makeDirectChild(h, i), childRes, children);
            children += bufferChildStep;
        }
    }
}