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+/*
+ * PCG Random Number Generation for C.
+ *
+ * Copyright 2014 Melissa O'Neill <oneill@pcg-random.org>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * For additional information about the PCG random number generation scheme,
+ * including its license and other licensing options, visit
+ *
+ * http://www.pcg-random.org
+ */
+
+/*
+ * This code is derived from the canonical C++ PCG implementation, which
+ * has many additional features and is preferable if you can use C++ in
+ * your project.
+ *
+ * The contents of this file were mechanically derived from pcg_variants.h
+ * (every inline function defined there gets an exern declaration here).
+ */
+
+#include "pcg_variants.h"
+
+/*
+ * Rotate helper functions.
+ */
+
+extern inline uint8_t pcg_rotr_8(uint8_t value, unsigned int rot);
+
+/*
+ * Output functions. These are the core of the PCG generation scheme.
+ */
+
+// XSH RS
+
+extern inline uint8_t pcg_output_xsh_rs_16_8(uint16_t state);
+
+// XSH RR
+
+extern inline uint8_t pcg_output_xsh_rr_16_8(uint16_t state);
+
+// RXS M XS
+
+extern inline uint8_t pcg_output_rxs_m_xs_8_8(uint8_t state);
+
+// XSL RR (only defined for >= 64 bits)
+
+// XSL RR RR (only defined for >= 64 bits)
+