✨ add cstdint header

include/zll/cstdint.hpp

@@ -0,0 +1,51 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef ZLL_CSTDINT_HPP
+#define ZLL_CSTDINT_HPP
+
+#include <stdint.h>
+
+namespace zll {
+using ::int8_t;
+using ::int_fast8_t;
+using ::int_least8_t;
+using ::uint8_t;
+using ::uint_fast8_t;
+using ::uint_least8_t;
+
+using ::int16_t;
+using ::int_fast16_t;
+using ::int_least16_t;
+using ::uint16_t;
+using ::uint_fast16_t;
+using ::uint_least16_t;
+
+using ::int32_t;
+using ::int_fast32_t;
+using ::int_least32_t;
+using ::uint32_t;
+using ::uint_fast32_t;
+using ::uint_least32_t;
+
+using ::int64_t;
+using ::int_fast64_t;
+using ::int_least64_t;
+using ::uint64_t;
+using ::uint_fast64_t;
+using ::uint_least64_t;
+
+using ::intmax_t;
+using ::uintmax_t;
+}  // namespace zll
+
+namespace zll {
+// this is specific for gcc and clang
+typedef __INTPTR_TYPE__ intptr_t;
+typedef __UINTPTR_TYPE__ uintptr_t;
+}  // namespace zll
+
+#endif  // ZLL_CSTDINT_HPP