1 /*- 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)libkern.h 8.1 (Berkeley) 6/10/93 34 * $FreeBSD: src/sys/sys/libkern.h,v 1.20.2.2 2001/09/30 21:12:54 luigi Exp $ 35 */ 36 37 #ifndef _SYS_LIBKERN_H_ 38 #define _SYS_LIBKERN_H_ 39 40 #include <sys/cdefs.h> 41 #include <sys/types.h> 42 #ifdef _KERNEL 43 #include <sys/systm.h> 44 #endif 45 46 /* BCD conversions. */ 47 extern u_char const bcd2bin_data[]; 48 extern u_char const bin2bcd_data[]; 49 extern char const hex2ascii_data[]; 50 51 #define bcd2bin(bcd) (bcd2bin_data[bcd]) 52 #define bin2bcd(bin) (bin2bcd_data[bin]) 53 #define hex2ascii(hex) (hex2ascii_data[hex]) 54 55 static __inline int imax(int a, int b) { return (a > b ? a : b); } 56 static __inline int imin(int a, int b) { return (a < b ? a : b); } 57 static __inline long lmax(long a, long b) { return (a > b ? a : b); } 58 static __inline long lmin(long a, long b) { return (a < b ? a : b); } 59 static __inline u_int max(u_int a, u_int b) { return (a > b ? a : b); } 60 static __inline u_int min(u_int a, u_int b) { return (a < b ? a : b); } 61 static __inline quad_t qmax(quad_t a, quad_t b) { return (a > b ? a : b); } 62 static __inline quad_t qmin(quad_t a, quad_t b) { return (a < b ? a : b); } 63 static __inline u_long ulmax(u_long a, u_long b) { return (a > b ? a : b); } 64 static __inline u_long ulmin(u_long a, u_long b) { return (a < b ? a : b); } 65 66 /* Prototypes for non-quad routines. */ 67 u_int32_t arc4random __P((void)); 68 int bcmp __P((const void *, const void *, size_t)); 69 #ifndef HAVE_INLINE_FFS 70 int ffs __P((int)); 71 #endif 72 #ifndef HAVE_INLINE_FLS 73 int fls __P((int)); 74 #endif 75 int locc __P((int, char *, u_int)); 76 void qsort __P((void *base, size_t nmemb, size_t size, 77 int (*compar)(const void *, const void *))); 78 u_long random __P((void)); 79 char *index __P((const char *, int)); 80 char *rindex __P((const char *, int)); 81 int scanc __P((u_int, const u_char *, const u_char *, int)); 82 int skpc __P((int, int, char *)); 83 void srandom __P((u_long)); 84 char *strcat __P((char *, const char *)); 85 int strcmp __P((const char *, const char *)); 86 char *strcpy __P((char *, const char *)); 87 size_t strlen __P((const char *)); 88 int strncmp __P((const char *, const char *, size_t)); 89 char *strncpy __P((char *, const char *, size_t)); 90 91 92 static __inline int 93 memcmp(const void *b1, const void *b2, size_t len) 94 { 95 return (bcmp(b1, b2, len)); 96 } 97 98 static __inline void * 99 memset(void *b, int c, size_t len) 100 { 101 char *bb; 102 103 if (c == 0) 104 bzero(b, len); 105 else 106 for (bb = (char *)b; len--; ) 107 *bb++ = c; 108 return (b); 109 } 110 111 #endif /* !_SYS_LIBKERN_H_ */ 112