Abdelrahman Said
74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
/*
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* PCG Random Number Generation for C.
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*
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* Copyright 2014-2019 Melissa O'Neill <oneill@pcg-random.org>,
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* and the PCG Project contributors.
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*
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* SPDX-License-Identifier: (Apache-2.0 OR MIT)
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*
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* Licensed under the Apache License, Version 2.0 (provided in
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* LICENSE-APACHE.txt and at http://www.apache.org/licenses/LICENSE-2.0)
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* or under the MIT license (provided in LICENSE-MIT.txt and at
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* http://opensource.org/licenses/MIT), at your option. This file may not
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* be copied, modified, or distributed except according to those terms.
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*
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* Distributed on an "AS IS" BASIS, WITHOUT WARRANTY OF ANY KIND, either
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* express or implied. See your chosen license for details.
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*
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* For additional information about the PCG random number generation scheme,
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* visit http://www.pcg-random.org/.
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*/
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/*
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* This code is derived from the canonical C++ PCG implementation, which
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* has many additional features and is preferable if you can use C++ in
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* your project.
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*
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* The contents of this file were mechanically derived from pcg_variants.h
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* (every inline function defined there gets a generated extern declaration).
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*/
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#include "pcg_variants.h"
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/*
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* Rotate helper functions.
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*/
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extern inline uint64_t pcg_rotr_64(uint64_t value, unsigned int rot);
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/*
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* Output functions. These are the core of the PCG generation scheme.
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*/
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/* XSH RS */
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#if PCG_HAS_128BIT_OPS
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extern inline uint64_t pcg_output_xsh_rs_128_64(pcg128_t state);
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#endif
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/* XSH RR */
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#if PCG_HAS_128BIT_OPS
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extern inline uint64_t pcg_output_xsh_rr_128_64(pcg128_t state);
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#endif
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/* RXS M XS */
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extern inline uint64_t pcg_output_rxs_m_xs_64_64(uint64_t state);
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/* RXS M */
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#if PCG_HAS_128BIT_OPS
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extern inline uint64_t pcg_output_rxs_m_128_64(pcg128_t state);
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#endif
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/* XSL RR (only defined for >= 64 bits) */
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#if PCG_HAS_128BIT_OPS
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extern inline uint64_t pcg_output_xsl_rr_128_64(pcg128_t state);
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#endif
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/* XSL RR RR (only defined for >= 64 bits) */
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extern inline uint64_t pcg_output_xsl_rr_rr_64_64(uint64_t state);
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