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2 Commits
| Author | SHA1 | Date | |
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19a6d3b74a | ||
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ad0958b816 |
@@ -4,7 +4,7 @@ m4_define([libsubid_abi_major], 4)
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m4_define([libsubid_abi_minor], 0)
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m4_define([libsubid_abi_micro], 0)
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m4_define([libsubid_abi], [libsubid_abi_major.libsubid_abi_minor.libsubid_abi_micro])
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AC_INIT([shadow], [4.14.7], [pkg-shadow-devel@lists.alioth.debian.org], [],
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AC_INIT([shadow], [4.14.8], [pkg-shadow-devel@lists.alioth.debian.org], [],
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[https://github.com/shadow-maint/shadow])
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AM_INIT_AUTOMAKE([1.11 foreign dist-xz])
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AC_CONFIG_MACRO_DIRS([m4])
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12
lib/csrand.c
12
lib/csrand.c
@@ -22,6 +22,7 @@
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#include "shadowlog.h"
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static uint32_t csrand32(void);
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static uint32_t csrand_uniform32(uint32_t n);
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static unsigned long csrand_uniform_slow(unsigned long n);
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@@ -96,6 +97,13 @@ csrand_interval(unsigned long min, unsigned long max)
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}
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static uint32_t
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csrand32(void)
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{
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return csrand();
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}
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/*
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* Fast Random Integer Generation in an Interval
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* ACM Transactions on Modeling and Computer Simulation 29 (1), 2019
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@@ -108,12 +116,12 @@ csrand_uniform32(uint32_t n)
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uint64_t r, mult;
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if (n == 0)
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return csrand();
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return csrand32();
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bound = -n % n; // analogous to `2^32 % n`, since `x % y == (x-y) % y`
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do {
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r = csrand();
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r = csrand32();
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mult = r * n;
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rem = mult; // analogous to `mult % 2^32`
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} while (rem < bound); // p = (2^32 % n) / 2^32; W.C.: n=2^31+1, p=0.5
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