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-rw-r--r--lib/zipf.h17
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diff --git a/lib/zipf.h b/lib/zipf.h
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+#ifndef FIO_ZIPF_H
+#define FIO_ZIPF_H
+
+#include "rand.h"
+
+struct zipf_state {
+ uint64_t nranges;
+ double theta;
+ double zeta2;
+ double zetan;
+ struct frand_state rand;
+};
+
+void zipf_init(struct zipf_state *zs, unsigned long nranges, double theta);
+unsigned long long zipf_next(struct zipf_state *zs);
+
+#endif