76ace254e1
function old new delta next_random 46 68 +22 forkshell 248 263 +15 expand_vars_to_list 2118 2131 +13 run_pipe 1775 1782 +7 popstring 134 140 +6 builtin_umask 123 121 -2 ash_main 1356 1336 -20 get_local_var_value 125 104 -21 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 5/3 up/down: 63/-43) Total: 20 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
26 lines
610 B
C
26 lines
610 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) 2009 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 UNINITED_RANDOM_T(rnd) \
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((rnd)->galois_LFSR == 0)
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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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#define CLEAR_RANDOM_T(rnd) \
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((rnd)->galois_LFSR = 0)
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uint32_t next_random(random_t *rnd) FAST_FUNC;
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