112 lines
3.9 KiB
C
112 lines
3.9 KiB
C
/* Copyright (C) 2003 The KOS Team
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Copyright (C) 1999 Free Software Foundation
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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USA.
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*/
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#ifndef _SOS_KLIBC_H_
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#define _SOS_KLIBC_H_
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/**
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* @file klibc.h
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*
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* Basic libc-style support for common useful functions (string.h,
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* stdarg.h), some with slight non-standard behavior (see comments).
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*
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* Most of the prototypes of these functions are borrowed from
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* FreeBSD, but their implementation (in klibc.c) come either from Kos
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* (GPL v2) or from David Decotigny (SOS).
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*/
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#include <sos/types.h>
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/* string.h functions */
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void *memcpy(void *dst, const void *src, register unsigned int size ) ;
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void *memset(void *dst, register int c, register unsigned int length ) ;
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int memcmp(const void *s1, const void *s2, sos_size_t n);
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#define islower(c) (('a' <= (c)) && ((c) <= 'z'))
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#define isupper(c) (('A' <= (c)) && ((c) <= 'Z'))
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#define isdigit(c) (('0' <= (c)) && ((c) <= '9'))
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#define isspace(c) (((c) == ' ') || ((c) == '\t') || \
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((c) == '\f') || ((c) == '\n') || \
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((c) == '\r') || ((c) == '\v'))
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#define isprint(c) ((' ' <= (c)) && ((c) <= '~'))
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unsigned int strlen( register const char *str) ;
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unsigned int strnlen(const char * s, sos_size_t maxlen);
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/**
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* @note Same as strncpy(), with a slightly different semantic.
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* Actually, strncpy(3C) says " The result will not be null-terminated
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* if the length of 'from' is n or more.". Here, 'dst' is ALWAYS
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* null-terminated. And its total len will ALWAYS be <= len, with
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* null-terminating-char included.
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*/
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char *strzcpy( register char *dst, register const char *src,
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register int len ) ;
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/**
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* @note Same as strncat(), with the same semantic : 'dst' is ALWAYS
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* null-terminated. And its total len will ALWAYS be <= len, with
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* null-terminating-char included.
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*/
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char *strzcat (char *dest, const char *src,
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const sos_size_t len);
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int strcmp(register const char *s1, register const char *s2 );
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int strncmp(register const char *s1, register const char *s2,
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register int len );
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/* Basic stdarg.h macros. Taken from gcc support files */
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#define __GNUC_VA_LIST
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typedef void *__gnuc_va_list;
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typedef __gnuc_va_list va_list;
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#define __va_rounded_size(TYPE) \
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(((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
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#define va_start(AP, LASTARG) \
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(AP = ((__gnuc_va_list) __builtin_next_arg (LASTARG)))
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#define va_end(AP) \
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((void)0)
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#define va_arg(AP, TYPE) \
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(AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)), \
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*((TYPE *) (void *) ((char *) (AP) - __va_rounded_size (TYPE))))
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#define __va_copy(dest, src) \
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(dest) = (src)
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/* stdarg.h functions. There might be a non-standard behavior: there
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will always be a trailing '\0' in the resulting string */
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int vsnprintf(char *, sos_size_t, const char *, va_list);
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int snprintf(char *, sos_size_t, const char *, /*args*/ ...)
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__attribute__ ((format (printf, 3, 4)));
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/*
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* Pseudo-random generation functions. Useful to do some coverage
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* tests.
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*/
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/* Amplitude of the random number generation */
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#define RAND_MAX 4294967291U
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/* Pseudo-random number generation (MT unsafe) */
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unsigned long int random (void);
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/* Set random seed (MT unsafe) */
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void srandom (unsigned long int seed);
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#endif /* _SOS_KLIBC_H_ */
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