3ea2e82dc7
function old new delta next_random - 46 +46 ash_main 1361 1356 -5 change_random 132 97 -35 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/2 up/down: 46/-40) Total: 6 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
20 lines
492 B
C
20 lines
492 B
C
/* vi: set sw=4 ts=4: */
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/*
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* $RANDOM support.
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*
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* Copyright (C) 2008 Denys Vlasenko
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*
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* Licensed under GPLv2, see file LICENSE in this tarball for details.
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*/
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typedef struct random_t {
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/* Random number generators */
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int32_t galois_LFSR; /* Galois LFSR (fast but weak). signed! */
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uint32_t LCG; /* LCG (fast but weak) */
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} random_t;
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#define INIT_RANDOM_T(rnd, nonzero, v) \
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((rnd)->galois_LFSR = (nonzero), (rnd)->LCG = (v))
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uint32_t next_random(random_t *rnd) FAST_FUNC;
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