1 files changed, 0 insertions, 71 deletions
diff --git a/benchmarks/ewma.h b/benchmarks/ewma.h
deleted file mode 100644
index 8711004e..00000000
--- a/benchmarks/ewma.h
+++ /dev/null
@@ -1,71 +0,0 @@
-#ifndef EWMA_H
-#define EWMA_H
-
-#include <ilog2.h>
-
-#define BUILD_BUG_ON(expr)
-#define BUILD_BUG_ON_NOT_POWER_OF_2(expr)
-
-/*
- * Exponentially weighted moving average (EWMA)
- *
- * This implements a fixed-precision EWMA algorithm, with both the
- * precision and fall-off coefficient determined at compile-time
- * and built into the generated helper funtions.
- *
- * The first argument to the macro is the name that will be used
- * for the struct and helper functions.
- *
- * The second argument, the precision, expresses how many bits are
- * used for the fractional part of the fixed-precision values.
- *
- * The third argument, the weight reciprocal, determines how the
- * new values will be weighed vs. the old state, new values will
- * get weight 1/weight_rcp and old values 1-1/weight_rcp. Note
- * that this parameter must be a power of two for efficiency.
- */
-
-#define DECLARE_EWMA(T, name, _precision, _weight_rcp)			\
-	struct ewma_##name {						\
-		T internal;					\
-	};								\
-	static inline void ewma_##name##_init(struct ewma_##name *e)	\
-	{								\
-		BUILD_BUG_ON(!__builtin_constant_p(_precision));	\
-		BUILD_BUG_ON(!__builtin_constant_p(_weight_rcp));	\
-		/*							\
-		 * Even if you want to feed it just 0/1 you should have	\
-		 * some bits for the non-fractional part...		\
-		 */							\
-		BUILD_BUG_ON((_precision) > 30);			\
-		BUILD_BUG_ON_NOT_POWER_OF_2(_weight_rcp);		\
-		e->internal = 0;					\
-	}								\
-	static inline T							\
-	ewma_##name##_read(struct ewma_##name *e)			\
-	{								\
-		BUILD_BUG_ON(!__builtin_constant_p(_precision));	\
-		BUILD_BUG_ON(!__builtin_constant_p(_weight_rcp));	\
-		BUILD_BUG_ON((_precision) > 30);			\
-		BUILD_BUG_ON_NOT_POWER_OF_2(_weight_rcp);		\
-		return e->internal >> (_precision);			\
-	}								\
-	static inline void ewma_##name##_add(struct ewma_##name *e,	\
-					     T val)			\
-	{								\
-		const T weight_rcp = ilog2(_weight_rcp);		\
-		const T precision = _precision;				\
-		T internal = e->internal;				\
-									\
-		BUILD_BUG_ON(!__builtin_constant_p(_precision));	\
-		BUILD_BUG_ON(!__builtin_constant_p(_weight_rcp));	\
-		BUILD_BUG_ON((_precision) > 30);			\
-		BUILD_BUG_ON_NOT_POWER_OF_2(_weight_rcp);		\
-									\
-		e->internal = internal ?				\
-			(((internal << weight_rcp) - internal) +	\
-				(val << precision)) >> weight_rcp :	\
-			(val << precision);				\
-	}
-
-#endif /* EWMA_H */