case INITIAL:
	    /*
	     * Initial state. Acceptable characters are +, -, digits, period,
	     * I, N, and whitespace.
	     */

	    if (TclIsSpaceProc(c)) {
	    if (TclIsSpaceProcM(c)) {
		if (flags & TCL_PARSE_NO_WHITESPACE) {
		    goto endgame;
		}
		break;
	    } else if (c == '+') {
		state = SIGNUM;
		break;

	case sNANHEX:
	    if (c == ')') {
		state = sNANFINISH;
		break;
	    }
	    /* FALLTHROUGH */
	case sNANPAREN:
	    if (TclIsSpaceProc(c)) {
	    if (TclIsSpaceProcM(c)) {
		break;
	    }
	    if (numSigDigs < 13) {
		if (c >= '0' && c <= '9') {
		    d = c - '0';
		} else if (c >= 'a' && c <= 'f') {
		    d = 10 + c - 'a';

	p = acceptPoint;
	len = acceptLen;
	if (!(flags & TCL_PARSE_NO_WHITESPACE)) {
	    /*
	     * Accept trailing whitespace.
	     */

	    while (len != 0 && TclIsSpaceProc(*p)) {
	    while (len != 0 && TclIsSpaceProcM(*p)) {
		p++;
		len--;
	    }
	}
	if (endPtrPtr == NULL) {
	    if ((len != 0) && ((numBytes > 0) || (*p != '\0'))) {
		status = TCL_ERROR;