From 5c34e8ae67998c53c1d4016d5b9f4c02917f0ecf Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Sun, 26 Nov 2023 22:04:04 +0100
Subject: core,codec,tools: Working on c binding generation

---
 c++/core/templates.h | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

(limited to 'c++/core/templates.h')

diff --git a/c++/core/templates.h b/c++/core/templates.h
index e704f37..e2851a0 100644
--- a/c++/core/templates.h
+++ b/c++/core/templates.h
@@ -102,4 +102,43 @@ struct ct_multiply<T, V0, VN...> {
 	static constexpr T value = V0 * ct_multiply<T,VN...>::value;
 };
 
+namespace impl {
+template<typename T, size_t i>
+struct ct_convert_digits_table_helper {
+		static constexpr std::array<T, 16> table = {
+				'0', '1', '2', '3',
+				'4', '5', '6', '7',
+				'8', '9', 'A', 'B',
+				'C', 'D', 'E', 'F'
+		};
+
+		static constexpr T value = table[i];
+};
+
+template<uint64_t Num, uint64_t Base, uint64_t... Digs>
+struct ct_convert_digits_helper {
+		static constexpr size_t size = ct_convert_digits_helper<Num / Base, Base, Num % Base, Digs...>::size;
+		static constexpr std::array<uint64_t, size> value = ct_convert_digits_helper<Num / Base, Base, Num % Base, Digs...>::value;
+};
+
+template<uint64_t Base, uint64_t... Digs>
+struct ct_convert_digits_helper<0, Base, Digs...> {
+		static constexpr size_t size = sizeof...(Digs);
+		static constexpr std::array<uint64_t, size> value = {Digs...};
+};
+
+template<uint64_t Base>
+struct ct_convert_digits_helper<0, Base> {
+		static constexpr size_t size = 0;
+		static constexpr std::array<uint64_t, 1> value = {0};
+};
+}
+
+template<uint64_t Num, uint64_t Base>
+struct ct_convert_to_digits {
+		static_assert(Base <= 16, "Only conversion up to hex is supported");
+
+		static constexpr size_t size = impl::ct_convert_digits_helper<Num, Base>::size;
+		static constexpr std::array<uint64_t, size> value = impl::ct_convert_digits_helper<Num, Base>::value;
+};
 }
-- 
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