source:
EcnlProtoTool/trunk/musl-1.1.18/src/prng/rand.c@
445
Last change on this file since 445 was 444, checked in by , 4 years ago | |
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File size: 183 bytes |
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1 | #include <stdlib.h> |
2 | #include <stdint.h> |
3 | |
4 | static uint64_t seed; |
5 | |
6 | void srand(unsigned s) |
7 | { |
8 | seed = s-1; |
9 | } |
10 | |
11 | int rand(void) |
12 | { |
13 | seed = 6364136223846793005ULL*seed + 1; |
14 | return seed>>33; |
15 | } |
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