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/* Reentrant sort function.
Copyright 2014-2021 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Paul Eggert. */
#include <config.h>
#include <stdlib.h>
/* This file is compiled only when the system has a qsort_r that needs
to be replaced because it has the BSD signature rather than the GNU
signature. */
struct thunk
{
int (*cmp) (void const *, void const *, void *);
void *arg;
};
static int
thunk_cmp (void *thunk, void const *a, void const *b)
{
struct thunk *th = thunk;
return th->cmp (a, b, th->arg);
}
void
qsort_r (void *base, size_t nmemb, size_t size,
int (*cmp) (void const *, void const *, void *),
void *arg)
{
# undef qsort_r
struct thunk thunk;
thunk.cmp = cmp;
thunk.arg = arg;
qsort_r (base, nmemb, size, &thunk, thunk_cmp);
}
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