Function verify_present

src/backend/opencl/platform.cpp:96–104

int getBackend() { return AF_BACKEND_OPENCL; }

bool verify_present(const string& pname, const string ref) {
    auto iter =
        search(begin(pname), end(pname), begin(ref), end(ref),
               [](const string::value_type& l, const string::value_type& r) {
                   return tolower(l) == tolower(r);
               });

    return iter != end(pname);
}

static string platformMap(string& platStr) {
    using strmap_t                = map<string, string>;