ADTast-experimentalenumforall-pointer-decaypthread-emulationqualifiedEnum
Last change
on this file since 58ca0a0a was
7812a7b5,
checked in by Thierry Delisle <tdelisle@…>, 4 years ago
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Fixed errors and warning with x86 build
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-
Property mode set to
100644
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File size:
1.5 KB
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1 | #pragma once |
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2 | |
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3 | #include <stdint.h> |
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4 | |
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5 | //-------------------------------------------------- |
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6 | #if defined(__SIZEOF_INT128__) |
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7 | typedef __uint128_t __lehmer64_state_t; |
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8 | static inline uint64_t __lehmer64( __lehmer64_state_t & state ) { |
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9 | state *= 0xda942042e4dd58b5; |
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10 | return state >> 64; |
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11 | } |
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12 | |
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13 | //-------------------------------------------------- |
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14 | typedef uint64_t __wyhash64_state_t; |
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15 | static inline uint64_t __wyhash64( __wyhash64_state_t & state ) { |
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16 | state += 0x60bee2bee120fc15; |
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17 | __uint128_t tmp; |
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18 | tmp = (__uint128_t) state * 0xa3b195354a39b70d; |
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19 | uint64_t m1 = (tmp >> 64) ^ tmp; |
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20 | tmp = (__uint128_t)m1 * 0x1b03738712fad5c9; |
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21 | uint64_t m2 = (tmp >> 64) ^ tmp; |
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22 | return m2; |
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23 | } |
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24 | #endif |
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25 | |
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26 | //-------------------------------------------------- |
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27 | typedef uint64_t __xorshift64_state_t; |
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28 | static inline uint64_t __xorshift64( __xorshift64_state_t & state ) { |
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29 | uint64_t x = state; |
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30 | x ^= x << 13; |
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31 | x ^= x >> 7; |
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32 | x ^= x << 17; |
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33 | return state = x; |
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34 | } |
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35 | |
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36 | //-------------------------------------------------- |
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37 | typedef struct { |
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38 | uint32_t a, b, c, d; |
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39 | uint32_t counter; |
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40 | } __xorwow__state_t; |
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41 | |
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42 | /* The state array must be initialized to not be all zero in the first four words */ |
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43 | static inline uint32_t __xorwow( __xorwow__state_t & state ) { |
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44 | /* Algorithm "xorwow" from p. 5 of Marsaglia, "Xorshift RNGs" */ |
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45 | uint32_t t = state.d; |
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46 | |
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47 | uint32_t const s = state.a; |
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48 | state.d = state.c; |
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49 | state.c = state.b; |
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50 | state.b = s; |
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51 | |
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52 | t ^= t >> 2; |
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53 | t ^= t << 1; |
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54 | t ^= s ^ (s << 4); |
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55 | state.a = t; |
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56 | |
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57 | state.counter += 362437; |
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58 | return t + state.counter; |
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59 | } |
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