xoroshiro.h File Reference

Xoroshiro RNG support functions. More...

#include <stdint.h>

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Macros
#define	rotl(x, k)   (((x) << (k)) | ((x) >> (64 - (k))))
#define	random_u64(rng_s)
#define	random_init(rng_s, llid, seed)

Detailed Description

Xoroshiro RNG support functions.

Xoroshiro RNG support functions.

SPDX-FileCopyrightText: 2008-2021 D. Blackman and S. Vigna vigna.nosp@m.@acm.nosp@m..org

Definition in file xoroshiro.h.

Macro Definition Documentation

random_init

#define random_init	(		rng_s,
			llid,
			seed
	)

Value:

__extension__ ({                                                        \
        (rng_s)[0] = (llid + 1) * UINT64_C(16232384076195101791) ^ seed;\
        (rng_s)[1] = (llid + 1) * UINT64_C(13983006573105492179) ^ seed;\
        (rng_s)[2] = (llid + 1) * UINT64_C(10204677566545858177) ^ seed;\
        (rng_s)[3] = (llid + 1) * UINT64_C(14539058011249359317) ^ seed;\
        unsigned __i = 1024;                                            \
        while (__i--)                                                   \
                random_u64((rng_s));                                    \
})

Definition at line 33 of file xoroshiro.h.

random_u64

#define random_u64

(

rng_s

)

Value:

__extension__ ({                                                        \
        const uint64_t __res = rotl((rng_s)[1] * 5, 7) * 9;             \
        const uint64_t __t = (rng_s)[1] << 17;                          \
                                                                        \
        (rng_s)[2] ^= (rng_s)[0];                                       \
        (rng_s)[3] ^= (rng_s)[1];                                       \
        (rng_s)[1] ^= (rng_s)[2];                                       \
        (rng_s)[0] ^= (rng_s)[3];                                       \
        (rng_s)[2] ^= __t;                                              \
        (rng_s)[3] = rotl((rng_s)[3], 45);                              \
                                                                        \
        __res;                                                          \
})

Definition at line 17 of file xoroshiro.h.