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/*

FUNCTION

	<>---find characters in string

INDEX

	strpbrk

ANSI_SYNOPSIS

	#include 

	char *strpbrk(const char *<[s1]>, const char *<[s2]>);

TRAD_SYNOPSIS

	#include 

	char *strpbrk(<[s1]>, <[s2]>)

	char *<[s1]>;

	char *<[s2]>;

DESCRIPTION

	This function locates the first occurence in the string

	pointed to by <[s1]> of any character in string pointed to by

	<[s2]> (excluding the terminating null character).

RETURNS

	<> returns a pointer to the character found in <[s1]>, or a

	null pointer if no character from <[s2]> occurs in <[s1]>.

PORTABILITY

<> requires no supporting OS subroutines.

*/

#include 

char *

_DEFUN (strpbrk, (s1, s2),

	_CONST char *s1 _AND

	_CONST char *s2)

{

  _CONST char *c = s2;

  if (!*s1)

    return (char *) NULL;

  while (*s1)

    {

      for (c = s2; *c; c++)

	{

	  if (*s1 == *c)

	    break;

	}

      if (*c)

	break;

      s1++;

    }

  if (*c == '\0')

    s1 = NULL;

  return (char *) s1;

}