From fcdca58617caf6a8c034a91588d6abb399be6b57 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Tue, 18 May 2021 00:06:37 +0100
Subject: Initial commit, still lots to do!

---
 lib/helpers.h | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 lib/helpers.h

(limited to 'lib/helpers.h')

diff --git a/lib/helpers.h b/lib/helpers.h
new file mode 100644
index 0000000..3a94ead
--- /dev/null
+++ b/lib/helpers.h
@@ -0,0 +1,35 @@
+#ifndef MYGRATE_HELPERS_H
+#define MYGRATE_HELPERS_H
+
+#include <concepts>
+#include <cstdint>
+#include <utility>
+
+namespace MyGrate {
+	template<std::integral I>
+	constexpr inline auto
+	bitslice(const I i, uint8_t offset, uint8_t size)
+	{
+		return (i >> offset) & ((1U << size) - 1U);
+	}
+
+	template<typename X, typename... P>
+	constexpr inline void
+	verify(bool expr, P &&... p)
+	{
+		if (!expr) {
+			throw X(std::forward<P...>(p)...);
+		}
+	}
+
+	template<typename T>
+	constexpr inline auto
+	mod100_extract(T & i)
+	{
+		const auto r {i % 100};
+		i /= 100;
+		return r;
+	}
+}
+
+#endif
-- 
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