#ident "$URL: svn://elmer/devel/SVN/SDDAS/trunk/libant/strnull.c $ %D% SwRI"
/*
  strnull -- returns nonzero unless string is null or string ptr = NULL
*/
 


#include <stdio.h>		/* for NULL,etc                              */
#define NUL '\0'		/* NUL marks end of string in C              */

int
strnull(char  *str)
{
  return (str == NULL || str[0] == NUL) ? 1 : 0;
}