Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages


home | help
COMPARE(3)		     C Programmer's Manual		    COMPARE(3)

       cmp_set_offset,	cmp_struct,  cmp_char,	cmp_short,  cmp_int, cmp_long,
       cmp_float,   cmp_double,	  cmp_long_double,    cmp_schar,    cmp_uchar,
       cmp_ushort,  cmp_uint, cmp_ulong, cmp_charptr, cmp_chararr - comparison
       functions for qsort, bsearch, and others

       #include	<cmp.h>
       void cmp_set_offset(size_t offset, int (*)(const	void *,	const void *));
       int cmp_struct(const void *, const void *);

       int cmp_char(const void *, const	void *);
       int cmp_short(const void	*, const void *);
       int cmp_int(const void *, const void *);
       int cmp_long(const void *, const	void *);
       int cmp_float(const void	*, const void *);
       int cmp_double(const void *, const void *);
       int cmp_long_double(const void *, const void *);

       int cmp_schar(const void	*, const void *);

       int cmp_uchar(const void	*, const void *);
       int cmp_ushort(const void *, const void *);
       int cmp_uint(const void *, const	void *);
       int cmp_ulong(const void	*, const void *);

       int cmp_charptr(const void *, const void	*);
       int cmp_chararr(const void *, const void	*);

       The functions declared above, with  the	exception  of  cmp_set_offset,
       compare two array elements of the indicated type	when given pointers to
       them.  The functions are	designed to work  with	qsort(3),  bsearch(3),
       and a number of other library functions which all need the same type of
       comparison function.  They all return negative if the  value  indicated
       by  the first argument is less than the second, 0 if they are the same,
       and positive otherwise.

       cmp_struct compares elements of a structure.  It	needs to know the off-
       set  of the element, and	a comparison function suitable for the type of
       the element.  These are set with	cmp_set_offset,	which should be	called
       before qsort(3).	 The settings stay in effect until changed.

       publib(3), qsort(3), bsearch(3),	isort(3), lsearch(3), lfind(3)

       Lars Wirzenius (

Publib			     C Programmer's Manual		    COMPARE(3)


Want to link to this manual page? Use this URL:

home | help