Function CPLHashSetHashStr

port/cpl_hash_set.cpp:527–541

 */

CPL_NOSANITIZE_UNSIGNED_INT_OVERFLOW
unsigned long CPLHashSetHashStr(const void *elt)
{
    if (elt == nullptr)
        return 0;

    const unsigned char *pszStr = static_cast<const unsigned char *>(elt);
    unsigned long hash = 0;

    int c = 0;
    while ((c = *pszStr++) != '\0')
        hash = c + (hash << 6) + (hash << 16) - hash;

    return hash;
}

/************************************************************************/
/*                         CPLHashSetEqualStr()                         */