TAS
TCP Acceleration as an OS Service
utils_rng.h
1 /*
2  * Copyright 2019 University of Washington, Max Planck Institute for
3  * Software Systems, and The University of Texas at Austin
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining
6  * a copy of this software and associated documentation files (the
7  * "Software"), to deal in the Software without restriction, including
8  * without limitation the rights to use, copy, modify, merge, publish,
9  * distribute, sublicense, and/or sell copies of the Software, and to
10  * permit persons to whom the Software is furnished to do so, subject to
11  * the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be
14  * included in all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
19  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
20  * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
21  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
22  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23  */
24 
25 #ifndef UTILS_RNG_H_
26 #define UTILS_RNG_H_
27 
28 #include <stddef.h>
29 #include <stdint.h>
30 
31 struct utils_rng {
32  uint64_t seed;
33 };
34 
35 void utils_rng_init(struct utils_rng *rng, uint64_t seed);
36 uint32_t utils_rng_gen32(struct utils_rng *rng);
38 double utils_rng_gend(struct utils_rng *rng);
39 void utils_rng_gen(struct utils_rng *rng, void *buf, size_t size);
40 
41 #endif // ndef UTILS_RNG_H_