/*      $OpenBSD: libkern.h,v 1.37 2023/12/21 02:57:14 jsg Exp $        */
/*      $NetBSD: libkern.h,v 1.7 1996/03/14 18:52:08 christos Exp $     */

/*-
 * Copyright (c) 1992, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      @(#)libkern.h   8.1 (Berkeley) 6/10/93
 */

#ifndef __LIBKERN_H__
#define __LIBKERN_H__

#include <sys/types.h>

#ifndef LIBKERN_INLINE
#define LIBKERN_INLINE  static __inline
#define LIBKERN_BODY
#endif


LIBKERN_INLINE int imax(int, int);
LIBKERN_INLINE int imin(int, int);
LIBKERN_INLINE u_int max(u_int, u_int);
LIBKERN_INLINE u_int min(u_int, u_int);
LIBKERN_INLINE long lmax(long, long);
LIBKERN_INLINE long lmin(long, long);
LIBKERN_INLINE u_long ulmax(u_long, u_long);
LIBKERN_INLINE u_long ulmin(u_long, u_long);
LIBKERN_INLINE int abs(int);

#ifdef LIBKERN_BODY
LIBKERN_INLINE int
imax(int a, int b)
{
        return (a > b ? a : b);
}
LIBKERN_INLINE int
imin(int a, int b)
{
        return (a < b ? a : b);
}
LIBKERN_INLINE long
lmax(long a, long b)
{
        return (a > b ? a : b);
}
LIBKERN_INLINE long
lmin(long a, long b)
{
        return (a < b ? a : b);
}
LIBKERN_INLINE u_int
max(u_int a, u_int b)
{
        return (a > b ? a : b);
}
LIBKERN_INLINE u_int
min(u_int a, u_int b)
{
        return (a < b ? a : b);
}
LIBKERN_INLINE u_long
ulmax(u_long a, u_long b)
{
        return (a > b ? a : b);
}
LIBKERN_INLINE u_long
ulmin(u_long a, u_long b)
{
        return (a < b ? a : b);
}

LIBKERN_INLINE int
abs(int j)
{
        return(j < 0 ? -j : j);
}
#endif

#ifdef NDEBUG                                           /* tradition! */
#define assert(e)       ((void)0)
#else
#define assert(e)       ((e) ? (void)0 :                                    \
                            __assert("", __FILE__, __LINE__, #e))
#endif

#define __KASSERTSTR    "kernel %sassertion \"%s\" failed: file \"%s\", line %d"

#ifndef DIAGNOSTIC
#define KASSERTMSG(e, msg, ...) ((void)0)
#define KASSERT(e)      ((void)0)
#else
#define KASSERTMSG(e, msg, ...) ((e) ? (void)0 :                            \
                            panic(__KASSERTSTR " " msg, "diagnostic ", #e,  \
                            __FILE__, __LINE__, ## __VA_ARGS__))
#define KASSERT(e)      ((e) ? (void)0 :                                    \
                            __assert("diagnostic ", __FILE__, __LINE__, #e))
#endif

#ifndef DEBUG
#define KDASSERTMSG(e, msg, ...)        ((void)0)
#define KDASSERT(e)     ((void)0)
#else
#define KDASSERTMSG(e, msg, ...)        ((e) ? (void)0 :                    \
                            panic(__KASSERTSTR " " msg, "debugging ", #e,   \
                            __FILE__, __LINE__, ## __VA_ARGS__))
#define KDASSERT(e)     ((e) ? (void)0 :                                    \
                            __assert("debugging ", __FILE__, __LINE__, #e))
#endif

#define CTASSERT(x)     extern char  _ctassert[(x) ? 1 : -1 ]   \
                            __attribute__((__unused__))

/* Prototypes for non-quad routines. */
void     __assert(const char *, const char *, int, const char *)
            __attribute__ ((__noreturn__));
int      bcmp(const void *, const void *, size_t);
void     bzero(void *, size_t);
void     explicit_bzero(void *, size_t);
int      ffs(int);
int      fls(int);
int      flsl(long);
void    *memchr(const void *, int, size_t);
int      memcmp(const void *, const void *, size_t);
void    *memset(void *, int c, size_t len);
u_int32_t random(void);
int      scanc(u_int, const u_char *, const u_char [], int);
int      skpc(int, size_t, u_char *);
size_t   strlen(const char *);
char    *strncpy(char *, const char *, size_t)
                __attribute__ ((__bounded__(__string__,1,3)));
size_t   strnlen(const char *, size_t);
size_t   strlcpy(char *, const char *, size_t)
                __attribute__ ((__bounded__(__string__,1,3)));
size_t   strlcat(char *, const char *, size_t)
                __attribute__ ((__bounded__(__string__,1,3)));
int      strcmp(const char *, const char *);
int      strncmp(const char *, const char *, size_t);
int      strncasecmp(const char *, const char *, size_t);
size_t   getsn(char *, size_t)
                __attribute__ ((__bounded__(__string__,1,2)));
char    *strchr(const char *, int);
char    *strrchr(const char *, int);
int      timingsafe_bcmp(const void *, const void *, size_t);
char    *strnstr(const char *, const char *, size_t);

#endif /* __LIBKERN_H__ */