speech signal process tools

				/*LINTLIBRARY*/				/*				 * Return the ptr in sp at which the character c appears;				 * NULL if not found				 */								/* static char *sccs_id = "@(#)strchr.c	1.2 12/8/89 ESI, ATT"; */								#define	NULL	0								char *				strchr(sp, c)				register char *sp, c;				{					do {						if(*sp == c)							return(sp);					} while(*sp++);					return(NULL);				}