cosmopolitan/libc/stdio/lcg.internal.h

#ifndef COSMOPOLITAN_LIBC_LCG_H_
#define COSMOPOLITAN_LIBC_LCG_H_
#ifdef _COSMO_SOURCE

forceinline uint64_t KnuthLinearCongruentialGenerator(uint64_t prev[1]) {
  /* Knuth, D.E., "The Art of Computer Programming," Vol 2,
     Seminumerical Algorithms, Third Edition, Addison-Wesley, 1998,
     p. 106 (line 26) & p. 108 */
  prev[0] = prev[0] * 6364136223846793005 + 1442695040888963407;
  return prev[0]; /* be sure to shift! */
}

#endif /* _COSMO_SOURCE */
#endif /* COSMOPOLITAN_LIBC_LCG_H_ */
Initial import 2020-06-15 14:18:57 +00:00			`#ifndef COSMOPOLITAN_LIBC_LCG_H_`
			`#define COSMOPOLITAN_LIBC_LCG_H_`
Replace COSMO define with _COSMO_SOURCE This change might cause ABI breakages for /opt/cosmos. It's needed to help us better conform to header declaration practices. 2023-08-14 03:31:27 +00:00			`#ifdef _COSMO_SOURCE`
Initial import 2020-06-15 14:18:57 +00:00
			`forceinline uint64_t KnuthLinearCongruentialGenerator(uint64_t prev[1]) {`
			`/* Knuth, D.E., "The Art of Computer Programming," Vol 2,`
			`Seminumerical Algorithms, Third Edition, Addison-Wesley, 1998,`
			`p. 106 (line 26) & p. 108 */`
			`prev[0] = prev[0] * 6364136223846793005 + 1442695040888963407;`
Make improvements - Make rand64() thread safe - Introduce lemur64 lcg prng - Improve strace on New Technology - Improve msync() on New Technology 2022-04-07 07:15:35 +00:00			`return prev[0]; /* be sure to shift! */`
Initial import 2020-06-15 14:18:57 +00:00			`}`

Replace COSMO define with _COSMO_SOURCE This change might cause ABI breakages for /opt/cosmos. It's needed to help us better conform to header declaration practices. 2023-08-14 03:31:27 +00:00			`#endif /* _COSMO_SOURCE */`
Initial import 2020-06-15 14:18:57 +00:00			`#endif /* COSMOPOLITAN_LIBC_LCG_H_ */`