text: /*
   * Copyright (C) 2019 Philippe Aubertin.
   * 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 author nor the names of other contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   * 
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
   */
  
  #include <stddef.h>
  
  void *memset(void *s, int c, size_t n) {
      size_t   idx;
      char    *cs = s;
  
      for(idx = 0; idx < n; ++idx) {
          cs[idx] = c;
      }
      
      return s;
  }
  
  void *memcpy(void *dest, const void *src, size_t n) {
      size_t       idx;
      char        *cdest  = dest;
      const char  *csrc   = src;
  
      for(idx = 0; idx < n; ++idx) {
          cdest[idx] = csrc[idx];
      }
  
      return dest;
  }
  
  size_t strlen(const char *s) {
      size_t count = 0;
  
      while(*s != 0) {
          ++s;
          ++count;
      }
      
      return count;
  }
  