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510b01833e
The existing APIs simply pass the implicit global state to the _r variants. No functional change. Note that these routines are not exported from libc and are not intended to be exported. If someone wished to export them from libc (which I would discourage), they should first be modified to match the inconsistent parameter type / order of the glibc public interfaces of the same names. I know Ravi will ask, so: the eventual goal of this series is to replace rand(3) with the implementation from random(3) (D23290). However, I'd like to wait a bit longer on that one to see if more feedback emerges. Reviewed by: kevans, markm Differential Revision: https://reviews.freebsd.org/D23289
46 lines
1.8 KiB
C
46 lines
1.8 KiB
C
/*-
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* Copyright 2020 Conrad Meyer <cem@FreeBSD.org>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#pragma once
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/* A full instance of the random(3) generator. */
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struct __random_state {
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uint32_t *rst_fptr;
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uint32_t *rst_rptr;
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uint32_t *rst_state;
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int rst_type;
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int rst_deg;
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int rst_sep;
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uint32_t *rst_end_ptr;
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/* Flexible array member must be last. */
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uint32_t rst_randtbl[];
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};
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int initstate_r(struct __random_state *, unsigned, uint32_t *, size_t);
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long random_r(struct __random_state *);
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void srandom_r(struct __random_state *, unsigned);
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void srandomdev_r(struct __random_state *);
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