53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/*
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* PCG Random Number Generation for C.
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*
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* Copyright 2014 Melissa O'Neill <oneill@pcg-random.org>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* For additional information about the PCG random number generation scheme,
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* including its license and other licensing options, visit
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*
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* http://www.pcg-random.org
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*/
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#ifndef PCG_BASIC_H_
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#define PCG_BASIC_H_
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#if defined(UNDER_CE) || !defined(_MSC_VER) || _MSC_VER >= 1800
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# include <stdint.h>
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#else
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# include "ms_stdint.h"
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct pcg_state_setseq_64 {
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uint64_t state; /* RNG state. All values are possible. */
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uint64_t inc; /* Controls which RNG sequence (stream) is selected. Must
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* *always* be odd. */
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} pcg32_random_t;
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#define PCG32_INITIALIZER { 0x853c49e6748fea9bULL, 0xda3e39cb94b95bdbULL }
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void pcg32_srandom_r(pcg32_random_t* rng, uint64_t initial_state, uint64_t initseq);
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uint32_t pcg32_random_r(pcg32_random_t* rng);
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#ifdef __cplusplus
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}
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#endif
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#endif /* PCG_BASIC_H_ */
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