Changeset 5d1ebb9 for libcfa/src/concurrency/kernel/fwd.hfa
- Timestamp:
- Jan 13, 2022, 9:42:08 PM (3 years ago)
- Branches:
- ADT, ast-experimental, enum, forall-pointer-decay, master, pthread-emulation, qualifiedEnum
- Children:
- 75965a6
- Parents:
- 919a6b2
- File:
-
- 1 edited
Legend:
- Unmodified
- Added
- Removed
-
libcfa/src/concurrency/kernel/fwd.hfa
r919a6b2 r5d1ebb9 79 79 return 80 80 #if defined(__SIZEOF_INT128__) 81 __lehmer64( kernelTLS().rand_seed );81 lehmer64( kernelTLS().rand_seed ); 82 82 #else 83 __xorshift64( kernelTLS().rand_seed );83 xorshift_13_7_17( kernelTLS().rand_seed ); 84 84 #endif 85 85 } 86 86 87 #define M (1_l64u << 48_l64u)88 #define A (25214903917_l64u)89 #define AI (18446708753438544741_l64u)90 #define C (11_l64u)91 #define D (16_l64u)92 93 87 static inline unsigned __tls_rand_fwd() { 94 kernelTLS().ready_rng.fwd_seed = (A * kernelTLS().ready_rng.fwd_seed + C) & (M - 1); 95 return kernelTLS().ready_rng.fwd_seed >> D; 88 return LCGBI_fwd( kernelTLS().ready_rng.fwd_seed ); 96 89 } 97 90 98 91 static inline unsigned __tls_rand_bck() { 99 unsigned int r = kernelTLS().ready_rng.bck_seed >> D; 100 kernelTLS().ready_rng.bck_seed = AI * (kernelTLS().ready_rng.bck_seed - C) & (M - 1); 101 return r; 102 } 103 104 #undef M 105 #undef A 106 #undef AI 107 #undef C 108 #undef D 92 return LCGBI_bck( kernelTLS().ready_rng.bck_seed ); 93 } 109 94 110 95 static inline void __tls_rand_advance_bck(void) { … … 140 125 } 141 126 } 142 143 extern uint64_t thread_rand();144 127 145 128 // Semaphore which only supports a single thread
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