qsort.c File Reference

#include <stdlib.h>

Include dependency graph for qsort.c:

Defines
#define	min(a, b)   (a) < (b) ? (a) : (b)
#define	swapcode(TYPE, parmi, parmj, n)
#define	SWAPINIT(a, es)
#define	swap(a, b)
#define	vecswap(a, b, n)   if ((n) > 0) swapfunc(a, b, n, swaptype)
#define	CMP(t, x, y)   (cmp((x), (y)))
#define	thunk   NULL
Typedefs
typedef int	cmp_t (const void *, const void *)
Functions
void	qsort (void *a, size_t n, size_t es, cmp_t *cmp)

---

Define Documentation

#define CMP	(		t,
			x,
			y
	)			(cmp((x), (y)))

Referenced by qsort().

#define min	(		a,
			b
	)			(a) < (b) ? (a) : (b)

Referenced by qsort().

#define swap	(		a,
			b
	)

Value:

if (swaptype == 0) {                            \
                long t = *(long *)(a);                  \
                *(long *)(a) = *(long *)(b);            \
                *(long *)(b) = t;                       \
        } else                                          \
                swapfunc(a, b, es, swaptype)

Referenced by qsort().

#define swapcode	(		TYPE,
			parmi,
			parmj,
			n
	)

Value:

{               \
        long i = (n) / sizeof (TYPE);                   \
        register TYPE *pi = (TYPE *) (parmi);           \
        register TYPE *pj = (TYPE *) (parmj);           \
        do {                                            \
                register TYPE   t = *pi;                \
                *pi++ = *pj;                            \
                *pj++ = t;                              \
        } while (--i > 0);                              \
}

#define SWAPINIT	(		a,
			es
	)

Value:

swaptype = ((char *)a - (char *)0) % sizeof(long) || \
        es % sizeof(long) ? 2 : es == sizeof(long)? 0 : 1;

Referenced by qsort().

#define thunk   NULL

Referenced by qsort().

#define vecswap	(		a,
			b,
			n
	)			if ((n) > 0) swapfunc(a, b, n, swaptype)

Referenced by qsort().

---

Typedef Documentation

typedef int cmp_t(const void *, const void *)

---

Function Documentation

void qsort	(	void *	a,
		size_t	n,
		size_t	es,
		cmp_t *	cmp
	)

References CMP, min, r, swap, SWAPINIT, thunk, and vecswap.