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#include 

#include 

#include "local.h"

size_t

_DEFUN (_wcstombs_r, (reent, s, pwcs, n, state),

        struct _reent *r    _AND

        char          *__restrict s    _AND

        const wchar_t *__restrict pwcs _AND

        size_t         n    _AND

        mbstate_t     *state)

{

  char *ptr = s;

  size_t max = n;

  char buff[8];

  int i, bytes, num_to_copy;

  if (s == NULL)

    {

      size_t num_bytes = 0;

      while (*pwcs != 0)

	{

	  bytes = __wctomb (r, buff, *pwcs++, __locale_charset (), state);

	  if (bytes == -1)

	    return -1;

	  num_bytes += bytes;

	}

      return num_bytes;

    }

  else

    {

      while (n > 0)

        {

          bytes = __wctomb (r, buff, *pwcs, __locale_charset (), state);

          if (bytes == -1)

            return -1;

          num_to_copy = (n > bytes ? bytes : (int)n);

          for (i = 0; i < num_to_copy; ++i)

            *ptr++ = buff[i];

          if (*pwcs == 0x00)

            return ptr - s - (n >= bytes);

          ++pwcs;

          n -= num_to_copy;

        }

      return max;

    }

}