From d108c705ae0b51874f1d18b8916466bdc5830415 Mon Sep 17 00:00:00 2001
From: Tyge Løvset <tylo@norceresearch.no>
Date: Thu, 7 Jul 2022 08:33:14 +0200
Subject: Added missing file: unordered_dense.h. Added -Wall -pedantic to
 benchmarks and fixed warnings. Thanks to ktprime for reporting.

---
 benchmarks/build_all.sh                      |    6 +-
 benchmarks/external/ankerl/unordered_dense.h | 1109 ++++++++++++++++++++++++++
 benchmarks/misc/prng_bench.cpp               |    4 +-
 benchmarks/misc/rust_cmap.c                  |    8 +-
 benchmarks/picobench/picobench_cmap.cpp      |    9 +-
 benchmarks/picobench/picobench_csmap.cpp     |   20 +-
 benchmarks/plotbench/cdeq_benchmark.cpp      |   18 +-
 benchmarks/plotbench/clist_benchmark.cpp     |   18 +-
 benchmarks/plotbench/cmap_benchmark.cpp      |   18 +-
 benchmarks/plotbench/cpque_benchmark.cpp     |    2 +-
 benchmarks/plotbench/csmap_benchmark.cpp     |   18 +-
 benchmarks/plotbench/cvec_benchmark.cpp      |   22 +-
 12 files changed, 1199 insertions(+), 53 deletions(-)
 create mode 100644 benchmarks/external/ankerl/unordered_dense.h

diff --git a/benchmarks/build_all.sh b/benchmarks/build_all.sh
index 1093807c..44f3ceed 100644
--- a/benchmarks/build_all.sh
+++ b/benchmarks/build_all.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
-cc='g++ -std=c++20'
-#cc='clang'
-#cc='clang -c -DSTC_HEADER'
+cc='g++ -Wall -pedantic -x c++ -std=c++20'
+#cc='clang++ -Wall -pedantic -x c++ -std=c++20'
+#cc='clang++ -Wall -pedantic -x c++ -std=c++20 -c -DSTC_HEADER'
 #cc='cl -nologo'
 #cc='cl -nologo -TP'
 #cc='cl -nologo -std:c11'
diff --git a/benchmarks/external/ankerl/unordered_dense.h b/benchmarks/external/ankerl/unordered_dense.h
new file mode 100644
index 00000000..36d48f8e
--- /dev/null
+++ b/benchmarks/external/ankerl/unordered_dense.h
@@ -0,0 +1,1109 @@
+///////////////////////// ankerl::unordered_dense::{map, set} /////////////////////////
+
+// A fast & densely stored hashmap and hashset based on robin-hood backward shift deletion.
+// Version 1.0.0
+// https://github.com/martinus/unordered_dense
+//
+// Licensed under the MIT License <http://opensource.org/licenses/MIT>.
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2022 Martin Leitner-Ankerl <martin.ankerl@gmail.com>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#ifndef ANKERL_UNORDERED_DENSE_H
+#define ANKERL_UNORDERED_DENSE_H
+
+// see https://semver.org/spec/v2.0.0.html
+#define ANKERL_UNORDERED_DENSE_VERSION_MAJOR 1 // incompatible API changes
+#define ANKERL_UNORDERED_DENSE_VERSION_MINOR 0 // add functionality in a backwards compatible manner
+#define ANKERL_UNORDERED_DENSE_VERSION_PATCH 0 // backwards compatible bug fixes
+
+#include <algorithm>
+#include <array>
+#include <cstdint>
+#include <cstring>
+#include <functional>
+#include <initializer_list>
+#include <limits>
+#include <memory>
+#include <stdexcept>
+#include <string>
+#include <string_view>
+#include <type_traits>
+#include <utility>
+#include <vector>
+
+#define ANKERL_UNORDERED_DENSE_PMR 0
+#if defined(__has_include)
+#    if __has_include(<memory_resource>)
+#        undef ANKERL_UNORDERED_DENSE_PMR
+#        define ANKERL_UNORDERED_DENSE_PMR 1
+#        include <memory_resource>
+#    endif
+#endif
+
+#if defined(_MSC_VER) && defined(_M_X64)
+#    include <intrin.h>
+#    pragma intrinsic(_umul128)
+#endif
+
+#if defined(__GNUC__) || defined(__INTEL_COMPILER) || defined(__clang__)
+#    define ANKERL_UNORDERED_DENSE_LIKELY(x) __builtin_expect(x, 1)
+#    define ANKERL_UNORDERED_DENSE_UNLIKELY(x) __builtin_expect(x, 0)
+#else
+#    define ANKERL_UNORDERED_DENSE_LIKELY(x) (x)
+#    define ANKERL_UNORDERED_DENSE_UNLIKELY(x) (x)
+#endif
+
+namespace ankerl::unordered_dense {
+
+// hash ///////////////////////////////////////////////////////////////////////
+
+// This is a stripped-down implementation of wyhash: https://github.com/wangyi-fudan/wyhash
+// No big-endian support (because different values on different machines don't matter),
+// hardcodes seed and the secret, reformattes the code, and clang-tidy fixes.
+namespace detail::wyhash {
+
+static inline void mum(uint64_t* a, uint64_t* b) {
+#if defined(__SIZEOF_INT128__)
+    __uint128_t r = *a;
+    r *= *b;
+    *a = static_cast<uint64_t>(r);
+    *b = static_cast<uint64_t>(r >> 64U);
+#elif defined(_MSC_VER) && defined(_M_X64)
+    *a = _umul128(*a, *b, b);
+#else
+    uint64_t ha = *a >> 32U;
+    uint64_t hb = *b >> 32U;
+    uint64_t la = static_cast<uint32_t>(*a);
+    uint64_t lb = static_cast<uint32_t>(*b);
+    uint64_t hi{};
+    uint64_t lo{};
+    uint64_t rh = ha * hb;
+    uint64_t rm0 = ha * lb;
+    uint64_t rm1 = hb * la;
+    uint64_t rl = la * lb;
+    uint64_t t = rl + (rm0 << 32U);
+    auto c = static_cast<uint64_t>(t < rl);
+    lo = t + (rm1 << 32U);
+    c += static_cast<uint64_t>(lo < t);
+    hi = rh + (rm0 >> 32U) + (rm1 >> 32U) + c;
+    *a = lo;
+    *b = hi;
+#endif
+}
+
+// multiply and xor mix function, aka MUM
+[[nodiscard]] static inline auto mix(uint64_t a, uint64_t b) -> uint64_t {
+    mum(&a, &b);
+    return a ^ b;
+}
+
+// read functions. WARNING: we don't care about endianness, so results are different on big endian!
+[[nodiscard]] static inline auto r8(const uint8_t* p) -> uint64_t {
+    uint64_t v{};
+    std::memcpy(&v, p, 8);
+    return v;
+}
+
+[[nodiscard]] static inline auto r4(const uint8_t* p) -> uint64_t {
+    uint32_t v{};
+    std::memcpy(&v, p, 4);
+    return v;
+}
+
+// reads 1, 2, or 3 bytes
+[[nodiscard]] static inline auto r3(const uint8_t* p, size_t k) -> uint64_t {
+    return (static_cast<uint64_t>(p[0]) << 16U) | (static_cast<uint64_t>(p[k >> 1U]) << 8U) | p[k - 1];
+}
+
+[[nodiscard]] inline auto hash(void const* key, size_t len) -> uint64_t {
+    static constexpr auto secret = std::array{UINT64_C(0xa0761d6478bd642f),
+                                              UINT64_C(0xe7037ed1a0b428db),
+                                              UINT64_C(0x8ebc6af09c88c6e3),
+                                              UINT64_C(0x589965cc75374cc3)};
+
+    auto const* p = static_cast<uint8_t const*>(key);
+    uint64_t seed = secret[0];
+    uint64_t a{};
+    uint64_t b{};
+    if (ANKERL_UNORDERED_DENSE_LIKELY(len <= 16)) {
+        if (ANKERL_UNORDERED_DENSE_LIKELY(len >= 4)) {
+            a = (r4(p) << 32U) | r4(p + ((len >> 3U) << 2U));
+            b = (r4(p + len - 4) << 32U) | r4(p + len - 4 - ((len >> 3U) << 2U));
+        } else if (ANKERL_UNORDERED_DENSE_LIKELY(len > 0)) {
+            a = r3(p, len);
+            b = 0;
+        } else {
+            a = 0;
+            b = 0;
+        }
+    } else {
+        size_t i = len;
+        if (ANKERL_UNORDERED_DENSE_UNLIKELY(i > 48)) {
+            uint64_t see1 = seed;
+            uint64_t see2 = seed;
+            do {
+                seed = mix(r8(p) ^ secret[1], r8(p + 8) ^ seed);
+                see1 = mix(r8(p + 16) ^ secret[2], r8(p + 24) ^ see1);
+                see2 = mix(r8(p + 32) ^ secret[3], r8(p + 40) ^ see2);
+                p += 48;
+                i -= 48;
+            } while (ANKERL_UNORDERED_DENSE_LIKELY(i > 48));
+            seed ^= see1 ^ see2;
+        }
+        while (ANKERL_UNORDERED_DENSE_UNLIKELY(i > 16)) {
+            seed = mix(r8(p) ^ secret[1], r8(p + 8) ^ seed);
+            i -= 16;
+            p += 16;
+        }
+        a = r8(p + i - 16);
+        b = r8(p + i - 8);
+    }
+
+    return mix(secret[1] ^ len, mix(a ^ secret[1], b ^ seed));
+}
+
+} // namespace detail::wyhash
+
+template <typename T, typename Enable = void>
+struct hash : public std::hash<T> {
+    using is_avalanching = void;
+    auto operator()(T const& obj) const noexcept(noexcept(std::declval<std::hash<T>>().operator()(std::declval<T const&>())))
+        -> size_t {
+        return detail::wyhash::mix(std::hash<T>::operator()(obj), UINT64_C(0x9E3779B97F4A7C15));
+    }
+};
+
+template <typename CharT>
+struct hash<std::basic_string<CharT>> {
+    using is_avalanching = void;
+    auto operator()(std::basic_string<CharT> const& str) const noexcept -> size_t {
+        return detail::wyhash::hash(str.data(), sizeof(CharT) * str.size());
+    }
+};
+
+template <typename CharT>
+struct hash<std::basic_string_view<CharT>> {
+    using is_avalanching = void;
+    auto operator()(std::basic_string_view<CharT> const& sv) const noexcept -> size_t {
+        return detail::wyhash::hash(sv.data(), sizeof(CharT) * sv.size());
+    }
+};
+
+namespace detail {
+
+struct nonesuch {};
+
+template <class Default, class AlwaysVoid, template <class...> class Op, class... Args>
+struct detector {
+    using value_t = std::false_type;
+    using type = Default;
+};
+
+template <class Default, template <class...> class Op, class... Args>
+struct detector<Default, std::void_t<Op<Args...>>, Op, Args...> {
+    using value_t = std::true_type;
+    using type = Op<Args...>;
+};
+
+template <template <class...> class Op, class... Args>
+using is_detected = typename detail::detector<detail::nonesuch, void, Op, Args...>::value_t;
+
+template <template <class...> class Op, class... Args>
+constexpr bool is_detected_v = is_detected<Op, Args...>::value;
+
+template <typename T>
+using detect_avalanching = typename T::is_avalanching;
+
+template <typename T>
+using detect_is_transparent = typename T::is_transparent;
+
+template <typename H, typename KE>
+using is_transparent =
+    std::enable_if_t<is_detected_v<detect_is_transparent, H> && is_detected_v<detect_is_transparent, KE>, bool>;
+
+// This is it, the table. Doubles as map and set, and uses `void` for T when its used as a set.
+template <class Key,
+          class T, // when void, treat it as a set.
+          class Hash,
+          class KeyEqual,
+          class Allocator>
+class table {
+    struct Bucket;
+    using ValueContainer =
+        typename std::vector<typename std::conditional_t<std::is_void_v<T>, Key, std::pair<Key, T>>, Allocator>;
+    using BucketAlloc = typename std::allocator_traits<Allocator>::template rebind_alloc<Bucket>;
+    using BucketAllocTraits = std::allocator_traits<BucketAlloc>;
+
+    static constexpr uint32_t BUCKET_DIST_INC = 1U << 8U;                    // skip 1 byte fingerprint
+    static constexpr uint32_t BUCKET_FINGERPRINT_MASK = BUCKET_DIST_INC - 1; // mask for 1 byte of fingerprint
+    static constexpr uint8_t INITIAL_SHIFTS = 64 - 3;                        // 2^(64-m_shift) number of buckets
+    static constexpr float DEFAULT_MAX_LOAD_FACTOR = 0.8;
+
+public:
+    using key_type = Key;
+    using mapped_type = T;
+    using value_type = typename ValueContainer::value_type;
+    using size_type = typename ValueContainer::size_type;
+    using difference_type = typename ValueContainer::difference_type;
+    using hasher = Hash;
+    using key_equal = KeyEqual;
+    using allocator_type = typename ValueContainer::allocator_type;
+    using reference = typename ValueContainer::reference;
+    using const_reference = typename ValueContainer::const_reference;
+    using pointer = typename ValueContainer::pointer;
+    using const_pointer = typename ValueContainer::const_pointer;
+    using iterator = typename ValueContainer::iterator;
+    using const_iterator = typename ValueContainer::const_iterator;
+
+private:
+    struct Bucket {
+        uint32_t dist_and_fingerprint; // upper 3 byte: distance to original bucket. lower byte: fingerprint from hash
+        uint32_t value_idx;            // index into the m_values vector.
+    };
+    static_assert(std::is_trivially_destructible_v<Bucket>, "assert there's no need to call destructor / std::destroy");
+    static_assert(std::is_trivially_copyable_v<Bucket>, "assert we can just memset / memcpy");
+
+    ValueContainer m_values{}; // Contains all the key-value pairs in one densely stored container. No holes.
+    Bucket* m_buckets_start = nullptr;
+    Bucket* m_buckets_end = nullptr;
+    uint32_t m_max_bucket_capacity = 0;
+    float m_max_load_factor = DEFAULT_MAX_LOAD_FACTOR;
+    Hash m_hash{};
+    KeyEqual m_equal{};
+    uint8_t m_shifts = INITIAL_SHIFTS;
+
+    [[nodiscard]] auto next(Bucket const* bucket) const -> Bucket const* {
+        return ANKERL_UNORDERED_DENSE_UNLIKELY(bucket + 1 == m_buckets_end) ? m_buckets_start : bucket + 1;
+    }
+
+    [[nodiscard]] auto next(Bucket* bucket) -> Bucket* {
+        return ANKERL_UNORDERED_DENSE_UNLIKELY(bucket + 1 == m_buckets_end) ? m_buckets_start : bucket + 1;
+    }
+
+    template <typename K>
+    [[nodiscard]] constexpr auto mixed_hash(K const& key) const -> uint64_t {
+        if constexpr (is_detected_v<detect_avalanching, Hash>) {
+            return m_hash(key);
+        } else {
+            return wyhash::mix(m_hash(key), UINT64_C(0x9E3779B97F4A7C15));
+        }
+    }
+
+    [[nodiscard]] constexpr auto dist_and_fingerprint_from_hash(uint64_t hash) const -> uint32_t {
+        return BUCKET_DIST_INC | (hash & BUCKET_FINGERPRINT_MASK);
+    }
+
+    [[nodiscard]] constexpr auto bucket_from_hash(uint64_t hash) const -> Bucket const* {
+        return m_buckets_start + (hash >> m_shifts);
+    }
+
+    [[nodiscard]] constexpr auto bucket_from_hash(uint64_t hash) -> Bucket* {
+        return m_buckets_start + (hash >> m_shifts);
+    }
+
+    [[nodiscard]] static constexpr auto get_key(value_type const& vt) -> key_type const& {
+        if constexpr (std::is_void_v<T>) {
+            return vt;
+        } else {
+            return vt.first;
+        }
+    }
+
+    template <typename K>
+    [[nodiscard]] auto next_while_less(K const& key) -> std::pair<uint32_t, Bucket*> {
+        auto const& pair = std::as_const(*this).next_while_less(key);
+        return {pair.first, const_cast<Bucket*>(pair.second)}; // NOLINT(cppcoreguidelines-pro-type-const-cast)
+    }
+
+    template <typename K>
+    [[nodiscard]] auto next_while_less(K const& key) const -> std::pair<uint32_t, Bucket const*> {
+        auto hash = mixed_hash(key);
+        auto dist_and_fingerprint = dist_and_fingerprint_from_hash(hash);
+        auto const* bucket = bucket_from_hash(hash);
+
+        while (dist_and_fingerprint < bucket->dist_and_fingerprint) {
+            dist_and_fingerprint += BUCKET_DIST_INC;
+            bucket = next(bucket);
+        }
+        return {dist_and_fingerprint, bucket};
+    }
+
+    void place_and_shift_up(Bucket bucket, Bucket* place) {
+        while (0 != place->dist_and_fingerprint) {
+            bucket = std::exchange(*place, bucket);
+            bucket.dist_and_fingerprint += BUCKET_DIST_INC;
+            place = next(place);
+        }
+        *place = bucket;
+    }
+
+    [[nodiscard]] static constexpr auto calc_num_buckets(uint8_t shifts) -> uint64_t {
+        return UINT64_C(1) << (64U - shifts);
+    }
+
+    [[nodiscard]] constexpr auto calc_shifts_for_size(size_t s) const -> uint8_t {
+        auto shifts = INITIAL_SHIFTS;
+        while (shifts > 0 && static_cast<uint64_t>(calc_num_buckets(shifts) * max_load_factor()) < s) {
+            --shifts;
+        }
+        return shifts;
+    }
+
+    // assumes m_values has data, m_buckets_start=m_buckets_end=nullptr, m_shifts is INITIAL_SHIFTS
+    void copy_buckets(table const& other) {
+        if (!empty()) {
+            m_shifts = other.m_shifts;
+            allocate_buckets_from_shift();
+            std::memcpy(m_buckets_start, other.m_buckets_start, sizeof(Bucket) * bucket_count());
+        }
+    }
+
+    /**
+     * True when no element can be added any more without increasing the size
+     */
+    [[nodiscard]] auto is_full() const -> bool {
+        return size() >= m_max_bucket_capacity;
+    }
+
+    void deallocate_buckets() {
+        auto bucket_alloc = BucketAlloc(m_values.get_allocator());
+        BucketAllocTraits::deallocate(bucket_alloc, m_buckets_start, bucket_count());
+        m_buckets_start = nullptr;
+        m_buckets_end = nullptr;
+        m_max_bucket_capacity = 0;
+    }
+
+    void allocate_buckets_from_shift() {
+        auto bucket_alloc = BucketAlloc(m_values.get_allocator());
+        auto num_buckets = calc_num_buckets(m_shifts);
+        m_buckets_start = BucketAllocTraits::allocate(bucket_alloc, num_buckets);
+        m_buckets_end = m_buckets_start + num_buckets;
+        m_max_bucket_capacity = static_cast<uint64_t>(num_buckets * max_load_factor());
+    }
+
+    void clear_buckets() {
+        std::memset(m_buckets_start, 0, sizeof(Bucket) * bucket_count());
+    }
+
+    void clear_and_fill_buckets_from_values() {
+        clear_buckets();
+        for (uint32_t value_idx = 0, end_idx = m_values.size(); value_idx < end_idx; ++value_idx) {
+            auto const& key = get_key(m_values[value_idx]);
+            auto [dist_and_fingerprint, bucket] = next_while_less(key);
+
+            // we know for certain that key has not yet been inserted, so no need to check it.
+            place_and_shift_up({dist_and_fingerprint, value_idx}, bucket);
+        }
+    }
+
+    void increase_size() {
+        --m_shifts;
+        deallocate_buckets();
+        allocate_buckets_from_shift();
+        clear_and_fill_buckets_from_values();
+    }
+
+    void do_erase(Bucket* bucket) {
+        auto const value_idx_to_remove = bucket->value_idx;
+
+        // shift down until either empty or an element with correct spot is found
+        auto* next_bucket = next(bucket);
+        while (next_bucket->dist_and_fingerprint >= BUCKET_DIST_INC * 2) {
+            *bucket = {next_bucket->dist_and_fingerprint - BUCKET_DIST_INC, next_bucket->value_idx};
+            bucket = std::exchange(next_bucket, next(next_bucket));
+        }
+        *bucket = {};
+
+        // update m_values
+        if (value_idx_to_remove != m_values.size() - 1) {
+            // no luck, we'll have to replace the value with the last one and update the index accordingly
+            auto& val = m_values[value_idx_to_remove];
+            val = std::move(m_values.back());
+
+            // update the values_idx of the moved entry. No need to play the info game, just look until we find the values_idx
+            auto mh = mixed_hash(get_key(val));
+            bucket = bucket_from_hash(mh);
+
+            auto const values_idx_back = static_cast<uint32_t>(m_values.size() - 1);
+            while (values_idx_back != bucket->value_idx) {
+                bucket = next(bucket);
+            }
+            bucket->value_idx = value_idx_to_remove;
+        }
+        m_values.pop_back();
+    }
+
+    template <typename K>
+    auto do_erase_key(K&& key) -> size_t {
+        auto [dist_and_fingerprint, bucket] = next_while_less(key);
+
+        while (dist_and_fingerprint == bucket->dist_and_fingerprint && !m_equal(key, get_key(m_values[bucket->value_idx]))) {
+            dist_and_fingerprint += BUCKET_DIST_INC;
+            bucket = next(bucket);
+        }
+
+        if (dist_and_fingerprint != bucket->dist_and_fingerprint) {
+            return 0;
+        }
+        do_erase(bucket);
+        return 1;
+    }
+
+    template <class K, class M>
+    auto do_insert_or_assign(K&& key, M&& mapped) -> std::pair<iterator, bool> {
+        auto it_isinserted = try_emplace(std::forward<K>(key), std::forward<M>(mapped));
+        if (!it_isinserted.second) {
+            it_isinserted.first->second = std::forward<M>(mapped);
+        }
+        return it_isinserted;
+    }
+
+    template <typename K, typename... Args>
+    auto do_try_emplace(K&& key, Args&&... args) -> std::pair<iterator, bool> {
+        if (is_full()) {
+            increase_size();
+        }
+
+        auto hash = mixed_hash(key);
+        auto dist_and_fingerprint = dist_and_fingerprint_from_hash(hash);
+        auto* bucket = bucket_from_hash(hash);
+
+        while (dist_and_fingerprint <= bucket->dist_and_fingerprint) {
+            if (dist_and_fingerprint == bucket->dist_and_fingerprint && m_equal(key, m_values[bucket->value_idx].first)) {
+                return {begin() + bucket->value_idx, false};
+            }
+            dist_and_fingerprint += BUCKET_DIST_INC;
+            bucket = next(bucket);
+        }
+
+        // emplace the new value. If that throws an exception, no harm done; index is still in a valid state
+        m_values.emplace_back(std::piecewise_construct,
+                              std::forward_as_tuple(std::forward<K>(key)),
+                              std::forward_as_tuple(std::forward<Args>(args)...));
+
+        // place element and shift up until we find an empty spot
+        uint32_t value_idx = static_cast<uint32_t>(m_values.size()) - 1;
+        place_and_shift_up({dist_and_fingerprint, value_idx}, bucket);
+        return {begin() + value_idx, true};
+    }
+
+    template <typename K>
+    auto do_find(K const& key) -> iterator {
+        if (empty()) {
+            return end();
+        }
+
+        auto mh = mixed_hash(key);
+        auto dist_and_fingerprint = dist_and_fingerprint_from_hash(mh);
+        auto const* bucket = bucket_from_hash(mh);
+
+        // unrolled loop. *Always* check a few directly, then enter the loop. This is faster.
+        if (dist_and_fingerprint == bucket->dist_and_fingerprint && m_equal(key, get_key(m_values[bucket->value_idx]))) {
+            return begin() + bucket->value_idx;
+        }
+        dist_and_fingerprint += BUCKET_DIST_INC;
+        bucket = next(bucket);
+
+        if (dist_and_fingerprint == bucket->dist_and_fingerprint && m_equal(key, get_key(m_values[bucket->value_idx]))) {
+            return begin() + bucket->value_idx;
+        }
+        dist_and_fingerprint += BUCKET_DIST_INC;
+        bucket = next(bucket);
+
+        do {
+            if (dist_and_fingerprint == bucket->dist_and_fingerprint && m_equal(key, get_key(m_values[bucket->value_idx]))) {
+                return begin() + bucket->value_idx;
+            }
+            dist_and_fingerprint += BUCKET_DIST_INC;
+            bucket = next(bucket);
+        } while (dist_and_fingerprint <= bucket->dist_and_fingerprint);
+        return end();
+    }
+
+    template <typename K>
+    auto do_find(K const& key) const -> const_iterator {
+        return const_cast<table*>(this)->do_find(key); // NOLINT(cppcoreguidelines-pro-type-const-cast)
+    }
+
+public:
+    table()
+        : table(0) {}
+
+    explicit table(size_t /*bucket_count*/,
+                   Hash const& hash = Hash(),
+                   KeyEqual const& equal = KeyEqual(),
+                   Allocator const& alloc = Allocator())
+        : m_values(alloc)
+        , m_hash(hash)
+        , m_equal(equal) {}
+
+    table(size_t bucket_count, Allocator const& alloc)
+        : table(bucket_count, Hash(), KeyEqual(), alloc) {}
+
+    table(size_t bucket_count, Hash const& hash, Allocator const& alloc)
+        : table(bucket_count, hash, KeyEqual(), alloc) {}
+
+    explicit table(Allocator const& alloc)
+        : table(0, Hash(), KeyEqual(), alloc) {}
+
+    template <class InputIt>
+    table(InputIt first,
+          InputIt last,
+          size_type bucket_count = 0,
+          Hash const& hash = Hash(),
+          KeyEqual const& equal = KeyEqual(),
+          Allocator const& alloc = Allocator())
+        : table(bucket_count, hash, equal, alloc) {
+        insert(first, last);
+    }
+
+    template <class InputIt>
+    table(InputIt first, InputIt last, size_type bucket_count, Allocator const& alloc)
+        : table(first, last, bucket_count, Hash(), KeyEqual(), alloc) {}
+
+    template <class InputIt>
+    table(InputIt first, InputIt last, size_type bucket_count, Hash const& hash, Allocator const& alloc)
+        : table(first, last, bucket_count, hash, KeyEqual(), alloc) {}
+
+    table(table const& other)
+        : table(other, other.m_values.get_allocator()) {}
+
+    table(table const& other, Allocator const& alloc)
+        : m_values(other.m_values, alloc)
+        , m_max_load_factor(other.m_max_load_factor)
+        , m_hash(other.m_hash)
+        , m_equal(other.m_equal) {
+        copy_buckets(other);
+    }
+
+    table(table&& other) noexcept
+        : table(std::move(other), other.m_values.get_allocator()) {}
+
+    table(table&& other, Allocator const& alloc) noexcept
+        : m_values(std::move(other.m_values), alloc)
+        , m_buckets_start(std::exchange(other.m_buckets_start, nullptr))
+        , m_buckets_end(std::exchange(other.m_buckets_end, nullptr))
+        , m_max_bucket_capacity(std::exchange(other.m_max_bucket_capacity, 0))
+        , m_max_load_factor(std::exchange(other.m_max_load_factor, DEFAULT_MAX_LOAD_FACTOR))
+        , m_hash(std::exchange(other.m_hash, {}))
+        , m_equal(std::exchange(other.m_equal, {}))
+        , m_shifts(std::exchange(other.m_shifts, INITIAL_SHIFTS)) {
+        other.m_values.clear();
+    }
+
+    table(std::initializer_list<value_type> ilist,
+          size_t bucket_count = 0,
+          Hash const& hash = Hash(),
+          KeyEqual const& equal = KeyEqual(),
+          Allocator const& alloc = Allocator())
+        : table(bucket_count, hash, equal, alloc) {
+        insert(ilist);
+    }
+
+    table(std::initializer_list<value_type> ilist, size_type bucket_count, const Allocator& alloc)
+        : table(ilist, bucket_count, Hash(), KeyEqual(), alloc) {}
+
+    table(std::initializer_list<value_type> init, size_type bucket_count, Hash const& hash, Allocator const& alloc)
+        : table(init, bucket_count, hash, KeyEqual(), alloc) {}
+
+    ~table() {
+        auto bucket_alloc = BucketAlloc(m_values.get_allocator());
+        BucketAllocTraits::deallocate(bucket_alloc, m_buckets_start, bucket_count());
+    }
+
+    auto operator=(table const& other) -> table& {
+        if (&other != this) {
+            deallocate_buckets(); // deallocate before m_values is set (might have another allocator)
+            m_values = other.m_values;
+            m_max_load_factor = other.m_max_load_factor;
+            m_hash = other.m_hash;
+            m_equal = other.m_equal;
+            m_shifts = INITIAL_SHIFTS;
+            copy_buckets(other);
+        }
+        return *this;
+    }
+
+    auto operator=(table&& other) noexcept(
+        noexcept(std::is_nothrow_move_assignable_v<ValueContainer>&& std::is_nothrow_move_assignable_v<Hash>&&
+                     std::is_nothrow_move_assignable_v<KeyEqual>)) -> table& {
+        if (&other != this) {
+            deallocate_buckets(); // deallocate before m_values is set (might have another allocator)
+            m_values = std::move(other.m_values);
+            m_buckets_start = std::exchange(other.m_buckets_start, nullptr);
+            m_buckets_end = std::exchange(other.m_buckets_end, nullptr);
+            m_max_bucket_capacity = std::exchange(other.m_max_bucket_capacity, 0);
+            m_max_load_factor = std::exchange(other.m_max_load_factor, DEFAULT_MAX_LOAD_FACTOR);
+            m_hash = std::exchange(other.m_hash, {});
+            m_equal = std::exchange(other.m_equal, {});
+            m_shifts = std::exchange(other.m_shifts, INITIAL_SHIFTS);
+            other.m_values.clear();
+        }
+        return *this;
+    }
+
+    auto operator=(std::initializer_list<value_type> ilist) -> table& {
+        clear();
+        insert(ilist);
+        return *this;
+    }
+
+    auto get_allocator() const noexcept -> allocator_type {
+        return m_values.get_allocator();
+    }
+
+    // iterators //////////////////////////////////////////////////////////////
+
+    auto begin() noexcept -> iterator {
+        return m_values.begin();
+    }
+
+    auto begin() const noexcept -> const_iterator {
+        return m_values.begin();
+    }
+
+    auto cbegin() const noexcept -> const_iterator {
+        return m_values.cbegin();
+    }
+
+    auto end() noexcept -> iterator {
+        return m_values.end();
+    }
+
+    auto cend() const noexcept -> const_iterator {
+        return m_values.cend();
+    }
+
+    auto end() const noexcept -> const_iterator {
+        return m_values.end();
+    }
+
+    // capacity ///////////////////////////////////////////////////////////////
+
+    [[nodiscard]] auto empty() const noexcept -> bool {
+        return m_values.empty();
+    }
+
+    [[nodiscard]] auto size() const noexcept -> size_t {
+        return m_values.size();
+    }
+
+    [[nodiscard]] auto max_size() const noexcept -> size_t {
+        return std::numeric_limits<uint32_t>::max();
+    }
+
+    // modifiers //////////////////////////////////////////////////////////////
+
+    void clear() {
+        m_values.clear();
+        clear_buckets();
+    }
+
+    auto insert(value_type const& value) -> std::pair<iterator, bool> {
+        return emplace(value);
+    }
+
+    auto insert(value_type&& value) -> std::pair<iterator, bool> {
+        return emplace(std::move(value));
+    }
+
+    template <class P, std::enable_if_t<std::is_constructible_v<value_type, P&&>, bool> = true>
+    auto insert(P&& value) -> std::pair<iterator, bool> {
+        return emplace(std::forward<P>(value));
+    }
+
+    auto insert(const_iterator /*hint*/, value_type const& value) -> iterator {
+        return insert(value).first;
+    }
+
+    auto insert(const_iterator /*hint*/, value_type&& value) -> iterator {
+        return insert(std::move(value)).first;
+    }
+
+    template <class P, std::enable_if_t<std::is_constructible_v<value_type, P&&>, bool> = true>
+    auto insert(const_iterator /*hint*/, P&& value) -> iterator {
+        return insert(std::forward<P>(value)).first;
+    }
+
+    template <class InputIt>
+    void insert(InputIt first, InputIt last) {
+        while (first != last) {
+            insert(*first);
+            ++first;
+        }
+    }
+
+    void insert(std::initializer_list<value_type> ilist) {
+        insert(ilist.begin(), ilist.end());
+    }
+
+    template <class M, typename Q = T, std::enable_if_t<!std::is_void_v<Q>, bool> = true>
+    auto insert_or_assign(Key const& key, M&& mapped) -> std::pair<iterator, bool> {
+        return do_insert_or_assign(key, std::forward<M>(mapped));
+    }
+
+    template <class M, typename Q = T, std::enable_if_t<!std::is_void_v<Q>, bool> = true>
+    auto insert_or_assign(Key&& key, M&& mapped) -> std::pair<iterator, bool> {
+        return do_insert_or_assign(std::move(key), std::forward<M>(mapped));
+    }
+
+    template <class M, typename Q = T, std::enable_if_t<!std::is_void_v<Q>, bool> = true>
+    auto insert_or_assign(const_iterator /*hint*/, Key const& key, M&& mapped) -> iterator {
+        return do_insert_or_assign(key, std::forward<M>(mapped)).first;
+    }
+
+    template <class M, typename Q = T, std::enable_if_t<!std::is_void_v<Q>, bool> = true>
+    auto insert_or_assign(const_iterator /*hint*/, Key&& key, M&& mapped) -> iterator {
+        return do_insert_or_assign(std::move(key), std::forward<M>(mapped)).first;
+    }
+
+    template <class... Args>
+    auto emplace(Args&&... args) -> std::pair<iterator, bool> {
+        if (is_full()) {
+            increase_size();
+        }
+
+        // first emplace_back the object so it is constructed. If the key is already there, pop it.
+        auto& val = m_values.emplace_back(std::forward<Args>(args)...);
+        auto hash = mixed_hash(get_key(val));
+        auto dist_and_fingerprint = dist_and_fingerprint_from_hash(hash);
+        auto* bucket = bucket_from_hash(hash);
+
+        while (dist_and_fingerprint <= bucket->dist_and_fingerprint) {
+            if (dist_and_fingerprint == bucket->dist_and_fingerprint &&
+                m_equal(get_key(val), get_key(m_values[bucket->value_idx]))) {
+                m_values.pop_back(); // value was already there, so get rid of it
+                return {begin() + bucket->value_idx, false};
+            }
+            dist_and_fingerprint += BUCKET_DIST_INC;
+            bucket = next(bucket);
+        }
+
+        // value is new, place the bucket and shift up until we find an empty spot
+        uint32_t value_idx = static_cast<uint32_t>(m_values.size()) - 1;
+        place_and_shift_up({dist_and_fingerprint, value_idx}, bucket);
+
+        return {begin() + value_idx, true};
+    }
+
+    template <class... Args>
+    auto emplace_hint(const_iterator /*hint*/, Args&&... args) -> iterator {
+        return emplace(std::forward<Args>(args)...).first;
+    }
+
+    template <class... Args, typename Q = T, std::enable_if_t<!std::is_void_v<Q>, bool> = true>
+    auto try_emplace(Key const& key, Args&&... args) -> std::pair<iterator, bool> {
+        return do_try_emplace(key, std::forward<Args>(args)...);
+    }
+
+    template <class... Args, typename Q = T, std::enable_if_t<!std::is_void_v<Q>, bool> = true>
+    auto try_emplace(Key&& key, Args&&... args) -> std::pair<iterator, bool> {
+        return do_try_emplace(std::move(key), std::forward<Args>(args)...);
+    }
+
+    template <class... Args, typename Q = T, std::enable_if_t<!std::is_void_v<Q>, bool> = true>
+    auto try_emplace(const_iterator /*hint*/, Key const& key, Args&&... args) -> iterator {
+        return do_try_emplace(key, std::forward<Args>(args)...).first;
+    }
+
+    template <class... Args, typename Q = T, std::enable_if_t<!std::is_void_v<Q>, bool> = true>
+    auto try_emplace(const_iterator /*hint*/, Key&& key, Args&&... args) -> iterator {
+        return do_try_emplace(std::move(key), std::forward<Args>(args)...).first;
+    }
+
+    auto erase(iterator it) -> iterator {
+        auto hash = mixed_hash(get_key(*it));
+        auto* bucket = bucket_from_hash(hash);
+
+        auto const value_idx_to_remove = static_cast<uint32_t>(it - cbegin());
+        while (bucket->value_idx != value_idx_to_remove) {
+            bucket = next(bucket);
+        }
+
+        do_erase(bucket);
+        return it;
+    }
+
+    auto erase(const_iterator it) -> iterator {
+        return erase(begin() + (it - cbegin()));
+    }
+
+    auto erase(const_iterator first, const_iterator last) -> iterator {
+        auto const it_ret = begin() + (first - cbegin());
+
+        auto first_to_last = std::distance(first, last);
+        auto last_to_end = std::distance(last, cend());
+
+        // remove elements from left to right which moves elements from the end back
+        auto const mid = first + std::min(first_to_last, last_to_end);
+        while (first != mid) {
+            erase(first);
+            ++first;
+        }
+
+        // all elements from the right are moved, now remove the last element until all done
+        while (last != mid) {
+            erase(--last);
+        }
+
+        return it_ret;
+    }
+
+    auto erase(Key const& key) -> size_t {
+        return do_erase_key(key);
+    }
+
+    template <class K, class H = Hash, class KE = KeyEqual, is_transparent<H, KE> = true>
+    auto erase(K&& key) -> size_t {
+        return do_erase_key(std::forward<K>(key));
+    }
+
+    void swap(table& other) noexcept(noexcept(std::is_nothrow_swappable_v<ValueContainer>&& std::is_nothrow_swappable_v<Hash>&&
+                                                  std::is_nothrow_swappable_v<KeyEqual>)) {
+        using std::swap;
+        swap(other, *this);
+    }
+
+    // lookup /////////////////////////////////////////////////////////////////
+
+    template <typename Q = T, std::enable_if_t<!std::is_void_v<Q>, bool> = true>
+    auto at(key_type const& key) -> Q& {
+        if (auto it = find(key); end() != it) {
+            return it->second;
+        }
+        throw std::out_of_range("ankerl::unordered_dense::map::at(): key not found");
+    } // LCOV_EXCL_LINE is this a gcov/lcov bug? this method is fully tested.
+
+    template <typename Q = T, std::enable_if_t<!std::is_void_v<Q>, bool> = true>
+    auto at(key_type const& key) const -> Q const& {
+        return const_cast<table*>(this)->at(key); // NOLINT(cppcoreguidelines-pro-type-const-cast)
+    }
+
+    template <typename Q = T, std::enable_if_t<!std::is_void_v<Q>, bool> = true>
+    auto operator[](Key const& key) -> Q& {
+        return try_emplace(key).first->second;
+    }
+
+    template <typename Q = T, std::enable_if_t<!std::is_void_v<Q>, bool> = true>
+    auto operator[](Key&& key) -> Q& {
+        return try_emplace(std::move(key)).first->second;
+    }
+
+    auto count(Key const& key) const -> size_t {
+        return find(key) == end() ? 0 : 1;
+    }
+
+    template <class K, class H = Hash, class KE = KeyEqual, is_transparent<H, KE> = true>
+    auto count(K const& key) const -> size_t {
+        return find(key) == end() ? 0 : 1;
+    }
+
+    auto find(Key const& key) -> iterator {
+        return do_find(key);
+    }
+
+    auto find(Key const& key) const -> const_iterator {
+        return do_find(key);
+    }
+
+    template <class K, class H = Hash, class KE = KeyEqual, is_transparent<H, KE> = true>
+    auto find(K const& key) -> iterator {
+        return do_find(key);
+    }
+
+    template <class K, class H = Hash, class KE = KeyEqual, is_transparent<H, KE> = true>
+    auto find(K const& key) const -> const_iterator {
+        return do_find(key);
+    }
+
+    auto contains(Key const& key) const -> size_t {
+        return find(key) != end();
+    }
+
+    template <class K, class H = Hash, class KE = KeyEqual, is_transparent<H, KE> = true>
+    auto contains(K const& key) const -> size_t {
+        return find(key) != end();
+    }
+
+    auto equal_range(Key const& key) -> std::pair<iterator, iterator> {
+        auto it = do_find(key);
+        return {it, it == end() ? end() : it + 1};
+    }
+
+    auto equal_range(const Key& key) const -> std::pair<const_iterator, const_iterator> {
+        auto it = do_find(key);
+        return {it, it == end() ? end() : it + 1};
+    }
+
+    template <class K, class H = Hash, class KE = KeyEqual, is_transparent<H, KE> = true>
+    auto equal_range(K const& key) -> std::pair<iterator, iterator> {
+        auto it = do_find(key);
+        return {it, it == end() ? end() : it + 1};
+    }
+
+    template <class K, class H = Hash, class KE = KeyEqual, is_transparent<H, KE> = true>
+    auto equal_range(K const& key) const -> std::pair<const_iterator, const_iterator> {
+        auto it = do_find(key);
+        return {it, it == end() ? end() : it + 1};
+    }
+
+    // bucket interface ///////////////////////////////////////////////////////
+
+    auto bucket_count() const noexcept -> size_t { // NOLINT(modernize-use-nodiscard)
+        return m_buckets_end - m_buckets_start;
+    }
+
+    auto max_bucket_count() const noexcept -> size_t { // NOLINT(modernize-use-nodiscard)
+        return std::numeric_limits<uint32_t>::max();
+    }
+
+    // hash policy ////////////////////////////////////////////////////////////
+
+    [[nodiscard]] auto load_factor() const -> float {
+        return bucket_count() ? static_cast<float>(size()) / bucket_count() : 0.0F;
+    }
+
+    [[nodiscard]] auto max_load_factor() const -> float {
+        return m_max_load_factor;
+    }
+
+    void max_load_factor(float ml) {
+        m_max_load_factor = ml;
+        m_max_bucket_capacity = static_cast<uint32_t>(bucket_count() * max_load_factor());
+    }
+
+    void rehash(size_t count) {
+        auto shifts = calc_shifts_for_size(std::max(count, size()));
+        if (shifts != m_shifts) {
+            m_shifts = shifts;
+            deallocate_buckets();
+            m_values.shrink_to_fit();
+            allocate_buckets_from_shift();
+            clear_and_fill_buckets_from_values();
+        }
+    }
+
+    void reserve(size_t capa) {
+        auto shifts = calc_shifts_for_size(std::max(capa, size()));
+        if (shifts < m_shifts) {
+            m_shifts = shifts;
+            deallocate_buckets();
+            allocate_buckets_from_shift();
+            clear_and_fill_buckets_from_values();
+        }
+    }
+
+    // observers //////////////////////////////////////////////////////////////
+
+    auto hash_function() const -> hasher {
+        return m_hash;
+    }
+
+    auto key_eq() const -> key_equal {
+        return m_equal;
+    }
+
+    // non-member functions ///////////////////////////////////////////////////
+
+    friend auto operator==(table const& a, table const& b) -> bool {
+        if (&a == &b) {
+            return true;
+        }
+        if (a.size() != b.size()) {
+            return false;
+        }
+        for (auto const& b_entry : b) {
+            auto it = a.find(get_key(b_entry));
+            if constexpr (std::is_void_v<T>) {
+                // set: only check that the key is here
+                if (a.end() == it) {
+                    return false;
+                }
+            } else {
+                // map: check that key is here, then also check that value is the same
+                if (a.end() == it || !(b_entry.second == it->second)) {
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+
+    friend auto operator!=(table const& a, table const& b) -> bool {
+        return !(a == b);
+    }
+};
+
+} // namespace detail
+
+template <class Key,
+          class T,
+          class Hash = hash<Key>,
+          class KeyEqual = std::equal_to<Key>,
+          class Allocator = std::allocator<std::pair<Key, T>>>
+using map = detail::table<Key, T, Hash, KeyEqual, Allocator>;
+
+template <class Key, class Hash = hash<Key>, class KeyEqual = std::equal_to<Key>, class Allocator = std::allocator<Key>>
+using set = detail::table<Key, void, Hash, KeyEqual, Allocator>;
+
+#if ANKERL_UNORDERED_DENSE_PMR
+
+namespace pmr {
+
+template <class Key, class T, class Hash = hash<Key>, class KeyEqual = std::equal_to<Key>>
+using map = detail::table<Key, T, Hash, KeyEqual, std::pmr::polymorphic_allocator<std::pair<Key, T>>>;
+
+template <class Key, class Hash = hash<Key>, class KeyEqual = std::equal_to<Key>>
+using set = detail::table<Key, void, Hash, KeyEqual, std::pmr::polymorphic_allocator<Key>>;
+
+} // namespace pmr
+
+#endif
+
+// deduction guides ///////////////////////////////////////////////////////////
+
+// TODO not yet implemented
+
+} // namespace ankerl::unordered_dense
+
+// std extensions /////////////////////////////////////////////////////////////
+
+namespace std { // NOLINT(cert-dcl58-cpp)
+
+template <class Key, class T, class Hash, class KeyEqual, class Allocator, class Pred>
+auto erase_if(ankerl::unordered_dense::detail::table<Key, T, Hash, KeyEqual, Allocator>& map, Pred pred) -> size_t {
+    // going back to front because erase() invalidates the end iterator
+    auto old_size = map.size();
+
+    auto back_it = map.end();
+    while (map.begin() != back_it) {
+        --back_it;
+        if (pred(*back_it)) {
+            map.erase(back_it);
+        }
+    }
+
+    return map.size() - old_size;
+}
+
+} // namespace std
+
+#endif
diff --git a/benchmarks/misc/prng_bench.cpp b/benchmarks/misc/prng_bench.cpp
index 2bb25429..ca6a1f10 100644
--- a/benchmarks/misc/prng_bench.cpp
+++ b/benchmarks/misc/prng_bench.cpp
@@ -45,7 +45,7 @@ uint32_t sfc32(uint32_t s[4]) {
     uint32_t t = s[0] + s[1] + s[3]++;
     s[0] = s[1] ^ (s[1] >> 9);
     s[1] = s[2] + (s[2] << 3);
-    s[2] = (s[2] << 21) | (s[2] >> 11) + t;
+    s[2] = ((s[2] << 21) | (s[2] >> 11)) + t;
     return t;
 }
 
@@ -53,7 +53,7 @@ uint32_t stc32(uint32_t s[5]) {
     uint32_t t = (s[0] ^ (s[3] += s[4])) + s[1];
     s[0] = s[1] ^ (s[1] >> 9);
     s[1] = s[2] + (s[2] << 3);
-    s[2] = (s[2] << 21) | (s[2] >> 11) + t;
+    s[2] = ((s[2] << 21) | (s[2] >> 11)) + t;
     return t;
 }
 
diff --git a/benchmarks/misc/rust_cmap.c b/benchmarks/misc/rust_cmap.c
index 933910cb..afd384fc 100644
--- a/benchmarks/misc/rust_cmap.c
+++ b/benchmarks/misc/rust_cmap.c
@@ -37,17 +37,17 @@ int main()
             uint64_t key = romu_trio(rng) & mask;
             cmap_u64_insert(&m, key, 0).ref->second += 1;
         }
-        printf("insert  : %zums  \tsize : %" PRIuMAX "\n", (clock() - now)/ms, cmap_u64_size(&m));
+        printf("insert  : %" PRIuMAX "ms  \tsize : %" PRIuMAX "\n", (clock() - now)/ms, cmap_u64_size(&m));
 
         now = clock();
         sum = 0;
         c_forrange (key, mask + 1) { sum += cmap_u64_contains(&m, key); }
-        printf("lookup  : %zums  \tsum  : %" PRIuMAX "\n", (clock() - now)/ms, sum);
+        printf("lookup  : %" PRIuMAX "ms  \tsum  : %" PRIuMAX "\n", (clock() - now)/ms, sum);
 
         now = clock();
         sum = 0;
         c_foreach (i, cmap_u64, m) { sum += i.ref->second; }
-        printf("iterate : %zums  \tsum  : %" PRIuMAX "\n", (clock() - now)/ms, sum);
+        printf("iterate : %" PRIuMAX "ms  \tsum  : %" PRIuMAX "\n", (clock() - now)/ms, sum);
 
         uint64_t rng2[3] = {1872361123, 123879177, 87739234};
         now = clock();
@@ -55,7 +55,7 @@ int main()
             uint64_t key = romu_trio(rng2) & mask;
             cmap_u64_erase(&m, key);
         }
-        printf("remove  : %zums  \tsize : %" PRIuMAX "\n", (clock() - now)/ms, cmap_u64_size(&m));
+        printf("remove  : %" PRIuMAX "ms  \tsize : %" PRIuMAX "\n", (clock() - now)/ms, cmap_u64_size(&m));
         printf("press a key:\n"); getchar();
     }
 }
diff --git a/benchmarks/picobench/picobench_cmap.cpp b/benchmarks/picobench/picobench_cmap.cpp
index f4551aa1..7d114d30 100644
--- a/benchmarks/picobench/picobench_cmap.cpp
+++ b/benchmarks/picobench/picobench_cmap.cpp
@@ -49,7 +49,6 @@ PICOBENCH_SUITE("Map1");
 template <class MapInt>
 static void ins_and_erase_i(picobench::state& s)
 {
-    size_t result = 0;
     MapInt map;
     map.max_load_factor((int)MaxLoadFactor100 / 100.0);
     csrandom(seed);
@@ -66,7 +65,7 @@ static void ins_and_erase_i(picobench::state& s)
         map.erase(crandom());
     s.set_result(map.size());
 }
-
+/*
 static void ins_and_erase_cmap_i(picobench::state& s)
 {
     cmap_i map = cmap_i_init();
@@ -86,7 +85,7 @@ static void ins_and_erase_cmap_i(picobench::state& s)
     s.set_result(cmap_i_size(&map));
     cmap_i_drop(&map);
 }
-
+*/
 static void ins_and_erase_cmap_x(picobench::state& s)
 {
     cmap_x map = cmap_x_init();
@@ -158,9 +157,9 @@ PICOBENCH(ins_and_access_cmap_i).P;
 PICOBENCH_SUITE("Map3");
 
 static void randomize(char* str, size_t len) {
-    for (int k=0; k < len; ++k) {
+    for (size_t k=0; k < len; ++k) {
         union {uint64_t i; char c[8];} r = {.i = crandom()};
-        for (int i=0; i<8 && k<len; ++k, ++i)
+        for (unsigned i=0; i<8 && k<len; ++k, ++i)
             str[k] = (r.c[i] & 63) + 48;
     }
 }
diff --git a/benchmarks/picobench/picobench_csmap.cpp b/benchmarks/picobench/picobench_csmap.cpp
index 312b38c5..5caab6cc 100644
--- a/benchmarks/picobench/picobench_csmap.cpp
+++ b/benchmarks/picobench/picobench_csmap.cpp
@@ -45,7 +45,7 @@ static void ctor_and_ins_one_i(picobench::state& s)
     }
     s.set_result(result);
 }
-
+/*
 static void ctor_and_ins_one_csmap_i(picobench::state& s)
 {
     size_t result = 0;
@@ -60,17 +60,16 @@ static void ctor_and_ins_one_csmap_i(picobench::state& s)
 }
 
 #define P samples(S1).iterations({N1})
-//PICOBENCH(ctor_and_ins_one_i<omap_i>).P;
-//PICOBENCH(ctor_and_ins_one_csmap_i).P;
+PICOBENCH(ctor_and_ins_one_i<omap_i>).P;
+PICOBENCH(ctor_and_ins_one_csmap_i).P;
 #undef P
-
+*/
 
 PICOBENCH_SUITE("Map_insert_only");
 
 template <class MapInt>
 static void insert_i(picobench::state& s)
 {
-    size_t result = 0;
     MapInt map;
     csrandom(seed);
     picobench::scope scope(s);
@@ -81,7 +80,6 @@ static void insert_i(picobench::state& s)
 
 static void insert_csmap_i(picobench::state& s)
 {
-    size_t result = 0;
     csmap_i map = csmap_i_init();
     csrandom(seed);
     picobench::scope scope(s);
@@ -195,7 +193,7 @@ PICOBENCH(ins_and_access_csmap_i).P;
 
 PICOBENCH_SUITE("Map4");
 
-static void randomize(char* str, size_t len) {
+static void randomize(char* str, int len) {
     union {uint64_t i; char c[8];} r = {.i = crandom()};
     for (int i = len - 7, j = 0; i < len; ++j, ++i)
         str[i] = (r.c[j] & 63) + 48;
@@ -285,7 +283,7 @@ static void iterate_x(picobench::state& s)
     }
     s.set_result(result);
 }
-
+/*
 static void iterate_csmap_x(picobench::state& s)
 {
     csmap_x map = csmap_x_init();
@@ -315,8 +313,8 @@ static void iterate_csmap_x(picobench::state& s)
     csmap_x_drop(&map);
 }
 
-
 #define P samples(S1).iterations({N1/20}).args({12})
-//PICOBENCH(iterate_x<omap_x>).P;
-//PICOBENCH(iterate_csmap_x).P;
+PICOBENCH(iterate_x<omap_x>).P;
+PICOBENCH(iterate_csmap_x).P;
 #undef P
+*/
\ No newline at end of file
diff --git a/benchmarks/plotbench/cdeq_benchmark.cpp b/benchmarks/plotbench/cdeq_benchmark.cpp
index 72884e78..49db3914 100644
--- a/benchmarks/plotbench/cdeq_benchmark.cpp
+++ b/benchmarks/plotbench/cdeq_benchmark.cpp
@@ -121,10 +121,18 @@ int main(int argc, char* argv[])
     const char* comp = argc > 1 ? argv[1] : "test";
     bool header = (argc > 2 && argv[2][0] == '1');
     float std_sum = 0, stc_sum = 0;
-    c_forrange (j, N_TESTS) { std_sum += secs(std_s[0].test[j]); stc_sum += secs(stc_s[0].test[j]); }
+
+    c_forrange (j, N_TESTS) { 
+        std_sum += secs(std_s[0].test[j]);
+        stc_sum += secs(stc_s[0].test[j]);
+    }
     if (header) printf("Compiler,Library,C,Method,Seconds,Ratio\n");
-    c_forrange (j, N_TESTS) printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, operations[j], secs(std_s[0].test[j]), 1.0f);
-                            printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, "total", std_sum, 1.0f);
-    c_forrange (j, N_TESTS) printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, operations[j], secs(stc_s[0].test[j]), secs(std_s[0].test[j]) ? secs(stc_s[0].test[j])/secs(std_s[0].test[j]) : 1.0f);
-                            printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, "total", stc_sum, stc_sum/std_sum);
+
+    c_forrange (j, N_TESTS)
+        printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, operations[j], secs(std_s[0].test[j]), 1.0f);
+    printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, "total", std_sum, 1.0f);
+
+    c_forrange (j, N_TESTS)
+        printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, operations[j], secs(stc_s[0].test[j]), secs(std_s[0].test[j]) ? secs(stc_s[0].test[j])/secs(std_s[0].test[j]) : 1.0f);
+    printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, "total", stc_sum, stc_sum/std_sum);
 }
diff --git a/benchmarks/plotbench/clist_benchmark.cpp b/benchmarks/plotbench/clist_benchmark.cpp
index 0f5a3f8f..ddd1e2f0 100644
--- a/benchmarks/plotbench/clist_benchmark.cpp
+++ b/benchmarks/plotbench/clist_benchmark.cpp
@@ -118,10 +118,18 @@ int main(int argc, char* argv[])
     const char* comp = argc > 1 ? argv[1] : "test";
     bool header = (argc > 2 && argv[2][0] == '1');
     float std_sum = 0, stc_sum = 0;
-    c_forrange (j, N_TESTS) { std_sum += secs(std_s[0].test[j]); stc_sum += secs(stc_s[0].test[j]); }
+
+    c_forrange (j, N_TESTS) {
+        std_sum += secs(std_s[0].test[j]);
+        stc_sum += secs(stc_s[0].test[j]);
+    }
     if (header) printf("Compiler,Library,C,Method,Seconds,Ratio\n");
-    c_forrange (j, N_TESTS) printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, operations[j], secs(std_s[0].test[j]), 1.0f);
-                            printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, "total", std_sum, 1.0f);
-    c_forrange (j, N_TESTS) printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, operations[j], secs(stc_s[0].test[j]), secs(std_s[0].test[j]) ? secs(stc_s[0].test[j])/secs(std_s[0].test[j]) : 1.0f);
-                            printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, "total", stc_sum, stc_sum/std_sum);
+
+    c_forrange (j, N_TESTS)
+        printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, operations[j], secs(std_s[0].test[j]), 1.0f);
+    printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, "total", std_sum, 1.0f);
+
+    c_forrange (j, N_TESTS)
+        printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, operations[j], secs(stc_s[0].test[j]), secs(std_s[0].test[j]) ? secs(stc_s[0].test[j])/secs(std_s[0].test[j]) : 1.0f);
+    printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, "total", stc_sum, stc_sum/std_sum);
 }
\ No newline at end of file
diff --git a/benchmarks/plotbench/cmap_benchmark.cpp b/benchmarks/plotbench/cmap_benchmark.cpp
index 4304db52..cf20c927 100644
--- a/benchmarks/plotbench/cmap_benchmark.cpp
+++ b/benchmarks/plotbench/cmap_benchmark.cpp
@@ -125,10 +125,18 @@ int main(int argc, char* argv[])
     const char* comp = argc > 1 ? argv[1] : "test";
     bool header = (argc > 2 && argv[2][0] == '1');
     float std_sum = 0, stc_sum = 0;
-    c_forrange (j, N_TESTS) { std_sum += secs(std_s[0].test[j]); stc_sum += secs(stc_s[0].test[j]); }
+
+    c_forrange (j, N_TESTS) {
+        std_sum += secs(std_s[0].test[j]);
+        stc_sum += secs(stc_s[0].test[j]);
+    }
     if (header) printf("Compiler,Library,C,Method,Seconds,Ratio\n");
-    c_forrange (j, N_TESTS) printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, operations[j], secs(std_s[0].test[j]), 1.0f);
-                            printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, "total", std_sum, 1.0f);
-    c_forrange (j, N_TESTS) printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, operations[j], secs(stc_s[0].test[j]), secs(std_s[0].test[j]) ? secs(stc_s[0].test[j])/secs(std_s[0].test[j]) : 1.0f);
-                            printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, "total", stc_sum, stc_sum/std_sum);
+
+    c_forrange (j, N_TESTS)
+        printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, operations[j], secs(std_s[0].test[j]), 1.0f);
+    printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, "total", std_sum, 1.0f);
+
+    c_forrange (j, N_TESTS)
+        printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, operations[j], secs(stc_s[0].test[j]), secs(std_s[0].test[j]) ? secs(stc_s[0].test[j])/secs(std_s[0].test[j]) : 1.0f);
+    printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, "total", stc_sum, stc_sum/std_sum);
 }
\ No newline at end of file
diff --git a/benchmarks/plotbench/cpque_benchmark.cpp b/benchmarks/plotbench/cpque_benchmark.cpp
index afa9c07e..ca28082b 100644
--- a/benchmarks/plotbench/cpque_benchmark.cpp
+++ b/benchmarks/plotbench/cpque_benchmark.cpp
@@ -15,7 +15,7 @@ static const uint32_t seed = 1234;
 void std_test()
 {
     stc64_t rng;
-    int N = 10000000, M = 10;
+    int N = 10000000;
 
     std::priority_queue<float, std::vector<float>, std::greater<float>> pq;
     rng = stc64_new(seed);
diff --git a/benchmarks/plotbench/csmap_benchmark.cpp b/benchmarks/plotbench/csmap_benchmark.cpp
index b319006f..7e6d62c6 100644
--- a/benchmarks/plotbench/csmap_benchmark.cpp
+++ b/benchmarks/plotbench/csmap_benchmark.cpp
@@ -126,10 +126,18 @@ int main(int argc, char* argv[])
     const char* comp = argc > 1 ? argv[1] : "test";
     bool header = (argc > 2 && argv[2][0] == '1');
     float std_sum = 0, stc_sum = 0;
-    c_forrange (j, N_TESTS) { std_sum += secs(std_s[0].test[j]); stc_sum += secs(stc_s[0].test[j]); }
+
+    c_forrange (j, N_TESTS) {
+        std_sum += secs(std_s[0].test[j]);
+        stc_sum += secs(stc_s[0].test[j]);
+    }
     if (header) printf("Compiler,Library,C,Method,Seconds,Ratio\n");
-    c_forrange (j, N_TESTS) printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, operations[j], secs(std_s[0].test[j]), 1.0f);
-                            printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, "total", std_sum, 1.0f);
-    c_forrange (j, N_TESTS) printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, operations[j], secs(stc_s[0].test[j]), secs(std_s[0].test[j]) ? secs(stc_s[0].test[j])/secs(std_s[0].test[j]) : 1.0f);
-                            printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, "total", stc_sum, stc_sum/std_sum);
+
+    c_forrange (j, N_TESTS)
+        printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, operations[j], secs(std_s[0].test[j]), 1.0f);
+    printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, "total", std_sum, 1.0f);
+
+    c_forrange (j, N_TESTS)
+        printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, operations[j], secs(stc_s[0].test[j]), secs(std_s[0].test[j]) ? secs(stc_s[0].test[j])/secs(std_s[0].test[j]) : 1.0f);
+    printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, "total", stc_sum, stc_sum/std_sum);
 }
diff --git a/benchmarks/plotbench/cvec_benchmark.cpp b/benchmarks/plotbench/cvec_benchmark.cpp
index 44dcee2f..a0faf679 100644
--- a/benchmarks/plotbench/cvec_benchmark.cpp
+++ b/benchmarks/plotbench/cvec_benchmark.cpp
@@ -42,7 +42,7 @@ Sample test_std_vector() {
         c_forrange (N) con.push_back(crandom() & mask2);
         s.test[FIND].t1 = clock();
         size_t sum = 0;
-        container::iterator it;
+        //container::iterator it;
         // Iteration - not inherent find - skipping
         //c_forrange (S) if ((it = std::find(con.begin(), con.end(), crandom() & mask2)) != con.end()) sum += *it;
         s.test[FIND].t2 = clock();
@@ -104,7 +104,7 @@ Sample test_stc_vector() {
 
 int main(int argc, char* argv[])
 {
-    Sample std_s[SAMPLES + 1] = {0}, stc_s[SAMPLES + 1] = {0};
+    Sample std_s[SAMPLES + 1] = {{NULL}}, stc_s[SAMPLES + 1] = {{NULL}};
     c_forrange (i, int, SAMPLES) {
         std_s[i] = test_std_vector();
         stc_s[i] = test_stc_vector();
@@ -117,10 +117,18 @@ int main(int argc, char* argv[])
     const char* comp = argc > 1 ? argv[1] : "test";
     bool header = (argc > 2 && argv[2][0] == '1');
     float std_sum = 0, stc_sum = 0;
-    c_forrange (j, N_TESTS) { std_sum += secs(std_s[0].test[j]); stc_sum += secs(stc_s[0].test[j]); }
+
+    c_forrange (j, N_TESTS) {
+        std_sum += secs(std_s[0].test[j]);
+        stc_sum += secs(stc_s[0].test[j]);
+    }
     if (header) printf("Compiler,Library,C,Method,Seconds,Ratio\n");
-    c_forrange (j, N_TESTS) printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, operations[j], secs(std_s[0].test[j]), 1.0f);
-                            printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, "total", std_sum, 1.0f);
-    c_forrange (j, N_TESTS) printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, operations[j], secs(stc_s[0].test[j]), secs(std_s[0].test[j]) ? secs(stc_s[0].test[j])/secs(std_s[0].test[j]) : 1.0f);
-                            printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, "total", stc_sum, stc_sum/std_sum);
+
+    c_forrange (j, N_TESTS)
+        printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, operations[j], secs(std_s[0].test[j]), 1.0f);
+    printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, std_s[0].name, N, "total", std_sum, 1.0f);
+
+    c_forrange (j, N_TESTS)
+        printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, operations[j], secs(stc_s[0].test[j]), secs(std_s[0].test[j]) ? secs(stc_s[0].test[j])/secs(std_s[0].test[j]) : 1.0f);
+    printf("%s,%s n:%d,%s,%.3f,%.3f\n", comp, stc_s[0].name, N, "total", stc_sum, stc_sum/std_sum);
 }
-- 
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