Files
RedBear-OS/recipes/libs/libgmp/source/rand/randlc2s.c
T
vasilito ff4ff35918 feat: track all source trees in git — full fork offline-first model
Red Bear OS is a full fork. All sources must be available from git clone
with zero network access. Removed gitignore rules that excluded fetched
source trees under recipes/*/source/, local/recipes/kde/*/source/,
local/recipes/qt/*/source/, and vendor source trees.

Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded.

127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt
frameworks, mesa, wayland, DRM drivers, and every other recipe source.
2026-05-14 10:55:53 +01:00

93 lines
2.9 KiB
C

/* gmp_randinit_lc_2exp_size -- initialize a random state with a linear
congruential generator of a requested size.
Copyright 1999-2001 Free Software Foundation, Inc.
This file is part of the GNU MP Library.
The GNU MP Library is free software; you can redistribute it and/or modify
it under the terms of either:
* the GNU Lesser General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at your
option) any later version.
or
* the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any
later version.
or both in parallel, as here.
The GNU MP Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received copies of the GNU General Public License and the
GNU Lesser General Public License along with the GNU MP Library. If not,
see https://www.gnu.org/licenses/. */
#include <stdio.h> /* for NULL */
#include "gmp-impl.h"
/* Array of LC-schemes, ordered in increasing order of the first
member (the 'm2exp' value). The end of the array is indicated with
an entry containing all zeros. */
/* All multipliers are in the range 0.01*m and 0.99*m, and are
congruent to 5 (mod 8).
They all pass the spectral test with Vt >= 2^(30/t) and merit >= 1.
(Up to and including 196 bits, merit is >= 3.) */
struct __gmp_rand_lc_scheme_struct
{
unsigned long int m2exp; /* Modulus is 2 ^ m2exp. */
const char *astr; /* Multiplier in string form. */
unsigned long int c; /* Addend. */
};
static const struct __gmp_rand_lc_scheme_struct __gmp_rand_lc_scheme[] =
{
{32, "29CF535", 1},
{33, "51F666D", 1},
{34, "A3D73AD", 1},
{35, "147E5B85", 1},
{36, "28F725C5", 1},
{37, "51EE3105", 1},
{38, "A3DD5CDD", 1},
{39, "147AF833D", 1},
{40, "28F5DA175", 1},
{56, "AA7D735234C0DD", 1},
{64, "BAECD515DAF0B49D", 1},
{100, "292787EBD3329AD7E7575E2FD", 1},
{128, "48A74F367FA7B5C8ACBB36901308FA85", 1},
{156, "78A7FDDDC43611B527C3F1D760F36E5D7FC7C45", 1},
{196, "41BA2E104EE34C66B3520CE706A56498DE6D44721E5E24F5", 1},
{200, "4E5A24C38B981EAFE84CD9D0BEC48E83911362C114F30072C5", 1},
{256, "AF66BA932AAF58A071FD8F0742A99A0C76982D648509973DB802303128A14CB5", 1},
{0, NULL, 0} /* End of array. */
};
int
gmp_randinit_lc_2exp_size (gmp_randstate_ptr rstate, mp_bitcnt_t size)
{
const struct __gmp_rand_lc_scheme_struct *sp;
mpz_t a;
/* Pick a scheme. */
for (sp = __gmp_rand_lc_scheme; sp->m2exp != 0; sp++)
if (sp->m2exp / 2 >= size)
goto found;
return 0;
found:
/* Install scheme. */
mpz_init_set_str (a, sp->astr, 16);
gmp_randinit_lc_2exp (rstate, a, sp->c, sp->m2exp);
mpz_clear (a);
return 1;
}