From 2ceccb698b01ad56ca75f2b99235bb23806a000e Mon Sep 17 00:00:00 2001
From: timstr
Date: Sun, 30 Oct 2022 18:06:26 -0700
Subject: Fibonacci in C++ using compile-time template meta-programming and
 inheritance-based templated loop unrolling

---
 entries/timstr/fib.cpp | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 entries/timstr/fib.cpp

(limited to 'entries')

diff --git a/entries/timstr/fib.cpp b/entries/timstr/fib.cpp
new file mode 100644
index 0000000..08e5802
--- /dev/null
+++ b/entries/timstr/fib.cpp
@@ -0,0 +1,35 @@
+#include <iostream>
+#include <cstdint>
+
+template<std::size_t N>
+struct fib {
+    static constexpr std::size_t value = fib<N - 1>::value + fib<N - 2>::value;
+};
+
+template<>
+struct fib<0> {
+    static constexpr std::size_t value = 1;
+};
+
+template<>
+struct fib<1> {
+    static constexpr std::size_t value = 1;
+};
+
+template<std::size_t N>
+constexpr std::size_t fib_v = fib<N>::value;
+
+template<std::size_t N>
+struct print_fib : print_fib<N - 1> {
+    print_fib() noexcept {
+        std::cout << fib_v<N - 1> << '\n';
+    }
+};
+
+template<>
+struct print_fib<0> {};
+
+int main() {
+    print_fib<32>{};
+    return 0;
+}
\ No newline at end of file
-- 
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