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+/*********************                                                        */
+/*! \file sampler.h
+ ** \verbatim
+ ** Top contributors (to current version):
+ **   Andres Noetzli
+ ** This file is part of the CVC4 project.
+ ** Copyright (c) 2009-2018 by the authors listed in the file AUTHORS
+ ** in the top-level source directory) and their institutional affiliations.
+ ** All rights reserved.  See the file COPYING in the top-level source
+ ** directory for licensing information.\endverbatim
+ **
+ ** \brief Sampler class that generates random values of different sorts
+ **
+ ** The Sampler class can be used to generate random values of different sorts
+ ** with biased and unbiased distributions.
+ **/
+
+#include "cvc4_private.h"
+
+#ifndef __CVC4__UTIL_FLOATINGPOINT_SAMPLER_H
+#define __CVC4__UTIL_FLOATINGPOINT_SAMPLER_H
+
+#include "util/floatingpoint.h"
+#include "util/random.h"
+
+namespace CVC4 {
+
+class Sampler
+{
+ public:
+  /**
+   * Generates a random, uniform bit-vector value.
+   */
+  static BitVector pickBvUniform(unsigned sz);
+
+  /**
+   * Generates a random, uniform floating-point value.
+   */
+  static FloatingPoint pickFpUniform(unsigned e, unsigned s);
+
+  /**
+   * Generates a random floating-point value biased towards special values
+   * (e.g.  +/- inf) and interesting bit-patterns (e.g. values with a zero
+   * significand).
+   */
+  static FloatingPoint pickFpBiased(unsigned e, unsigned s);
+
+ private:
+  /**
+   * Probablility with which special floating-point values are picked when
+   * picking a biased floating-point value
+   */
+  static constexpr double probSpecial = 0.2;
+};
+
+}  // namespace CVC4
+
+#endif /* __CVC4__UTIL_FLOATINGPOINT_SAMPLER_H */