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#define _BSD_SOURCE
#include <stdlib.h>

typedef int (*cmpfun)(const void *, const void *);

static int wrapper_cmp(const void *v1, const void *v2, void *cmp)
{
	return ((cmpfun)cmp)(v1, v2);
}

void qsort(void *base, size_t nel, size_t width, cmpfun cmp)
{
	__qsort_r(base, nel, width, wrapper_cmp, cmp);
}