text: /****************************************************************************
   * include/string.h
   *
   *   Copyright (C) 2007-2012, 2014, 2016 Gregory Nutt. All rights reserved.
   *   Author: Gregory Nutt <gnutt@nuttx.org>
   *
   * 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 NuttX 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 COPYRIGHT HOLDERS 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
   * COPYRIGHT OWNER 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.
   *
   ****************************************************************************/
  
  #ifndef __INCLUDE_STRING_H
  #define __INCLUDE_STRING_H
  
  /****************************************************************************
   * Included Files
   ****************************************************************************/
  
  #include <nuttx/config.h>
  
  #include <stddef.h>
  
  /****************************************************************************
   * Pre-processor Definitions
   ****************************************************************************/
  /* Compatibility definitions */
  
  #ifndef CONFIG_ARCH_BZERO
  # define bzero(s,n) (void)memset(s,0,n)
  #endif
  
  #define bcopy(b1,b2,len) (void)memmove(b2,b1,len)
  
  /****************************************************************************
   * Public Function Prototypes
   ****************************************************************************/
  
  #undef EXTERN
  #if defined(__cplusplus)
  #define EXTERN extern "C"
  extern "C"
  {
  #else
  #define EXTERN extern
  #endif
  
  FAR char  *strdup(FAR const char *s);
  FAR char  *strndup(FAR const char *s, size_t size);
  FAR const char *strerror(int);
  size_t     strlen(FAR const char *);
  size_t     strnlen(FAR const char *, size_t);
  FAR char  *strcat(FAR char *, FAR const char *);
  FAR char  *strncat(FAR char *, FAR const char *, size_t);
  int        strcmp(FAR const char *, FAR const char *);
  int        strncmp(FAR const char *, FAR const char *, size_t);
  int        strcasecmp(FAR const char *, FAR const char *);
  int        strncasecmp(FAR const char *, FAR const char *, size_t);
  int        strcoll(FAR const char *, FAR const char *s2);
  FAR char  *strcpy(char *dest, FAR const char *src);
  FAR char  *stpcpy(char *dest, FAR const char *src);
  FAR char  *strncpy(char *, FAR const char *, size_t);
  FAR char  *strpbrk(FAR const char *, FAR const char *);
  FAR char  *strchr(FAR const char *s, int c);
  FAR char  *strrchr(FAR const char *s, int c);
  size_t     strspn(FAR const char *, FAR const char *);
  size_t     strcspn(FAR const char *, FAR const char *);
  FAR char  *strstr(FAR const char *, FAR const char *);
  FAR char  *strcasestr(FAR const char *, FAR const char *);
  FAR char  *strtok(FAR char *, FAR const char *);
  FAR char  *strtok_r(FAR char *, FAR const char *, FAR char **);
  size_t     strxfrm(FAR char *, FAR const char *, size_t n);
  
  FAR void  *memchr(FAR const void *s, int c, size_t n);
  FAR void  *memccpy(FAR void *s1, FAR const void *s2, int c, size_t n);
  int        memcmp(FAR const void *s1, FAR const void *s2, size_t n);
  FAR void  *memcpy(FAR void *dest, FAR const void *src, size_t n);
  FAR void  *memmove(FAR void *dest, FAR const void *src, size_t count);
  FAR void  *memset(FAR void *s, int c, size_t n);
  
  #undef EXTERN
  #if defined(__cplusplus)
  }
  #endif
  #endif /* __INCLUDE_STRING_H */
  