reverted xxhash changes

src/bank.cpp

@@ -8,15 +8,8 @@ int_fast8_t Bank::AddUser(const std::string &name, std::string &&init_pass)
     }
     {
         std::shared_lock<std::shared_mutex> lock{size_l};
-        if (!users.try_emplace_l(
+        return ErrorResponse::UserNotFound + (2 * users.try_emplace_l(
-                name, [](User &) {}, std::move(init_pass)))
+                                                      name, [](User &) {}, std::move(init_pass))); //branchless if 1 else -1
-        {
-            return ErrorResponse::UserAlreadyExists;
-        }
-        else
-        {
-            return true;
-        }
     }
 }
 int_fast8_t Bank::AdminAddUser(const std::string &attempt, std::string &&name, uint32_t init_bal, std::string &&init_pass)
@@ -31,18 +24,11 @@ int_fast8_t Bank::AdminAddUser(const std::string &attempt, std::string &&name, u
     }
     {
         std::shared_lock<std::shared_mutex> lock{size_l};
-        if (!users.try_emplace_l(
+        return ErrorResponse::UserAlreadyExists + (7 * (!users.try_emplace_l(
-                name, [](User &) {}, init_bal, std::move(init_pass)))
+                                                           name, [](User &) {}, init_bal, std::move(init_pass))));
-        {
-            return ErrorResponse::UserAlreadyExists;
-        }
-        else
-        {
-            return true;
-        }
     }
 }
-
+//not branchless yet
 int_fast8_t Bank::DelUser(const std::string &name, const std::string &attempt)
 {
     std::shared_lock<std::shared_mutex> lock{size_l};
@@ -56,6 +42,7 @@ int_fast8_t Bank::DelUser(const std::string &name, const std::string &attempt)
         return state * ErrorResponse::WrongPassword;
     }
 }
+//not branchless yet
 int_fast8_t Bank::AdminDelUser(const std::string &name, const std::string &attempt)
 {
     std::shared_lock<std::shared_mutex> lock{size_l};
@@ -70,6 +57,7 @@ int_fast8_t Bank::AdminDelUser(const std::string &name, const std::string &attem
     }
 }
 
+//not branchless yet
 int_fast8_t Bank::SendFunds(const std::string &a_name, const std::string &b_name, uint32_t amount, const std::string &attempt)
 {
     //cant send money to self, from self or amount is 0
@@ -157,19 +145,9 @@ int_fast8_t Bank::SetBal(const std::string &name, const std::string &attempt, ui
     {
         return ErrorResponse::WrongAdminPassword;
     }
-    else
+    return ErrorResponse::UserNotFound + (2 * !users.modify_if(name, [amount](User &u) {
-    {
+               u.balance = amount;
-        if (!users.modify_if(name, [amount](User &u) {
+           }));
-                u.balance = amount;
-            }))
-        {
-            return ErrorResponse::UserNotFound;
-        }
-        else
-        {
-            return true;
-        }
-    }
 }
 int_fast64_t Bank::GetBal(const std::string &name) const
 {

src/xxhash.c

@@ -0,0 +1,42 @@
+/*
+ * xxHash - Extremely Fast Hash algorithm
+ * Copyright (C) 2012-2020 Yann Collet
+ *
+ * BSD 2-Clause License (https://www.opensource.org/licenses/bsd-license.php)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *    * Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *    * Redistributions in binary form must reproduce the above
+ *      copyright notice, this list of conditions and the following disclaimer
+ *      in the documentation and/or other materials provided with the
+ *      distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You can contact the author at:
+ *   - xxHash homepage: https://www.xxhash.com
+ *   - xxHash source repository: https://github.com/Cyan4973/xxHash
+ */
+
+/*
+ * xxhash.c instantiates functions defined in xxhash.h
+ */
+
+#define XXH_STATIC_LINKING_ONLY /* access advanced declarations */
+#define XXH_IMPLEMENTATION      /* access definitions */
+
+#include "xxhash.h"