/*

 * FUNCTION

 * <<vprintf>>, <<vfprintf>>, <<vsprintf>>---format argument list

 * INDEX

 * vprintf

 * INDEX

 * vfprintf

 * INDEX

 * vsprintf

 * ANSI_SYNOPSIS

 * #include <stdio.h>

 * #include <stdarg.h>

 * int vprintf(const char *<[fmt]>, va_list <[list]>);

 * int vfprintf(FILE *<[fp]>, const char *<[fmt]>, va_list <[list]>);

 * int vsprintf(char *<[str]>, const char *<[fmt]>, va_list <[list]>);

 * int _vprintf_r(void *<[reent]>, const char *<[fmt]>,

 * va_list <[list]>);

 * int _vfprintf_r(void *<[reent]>, FILE *<[fp]>, const char *<[fmt]>,

 * va_list <[list]>);

 * int _vsprintf_r(void *<[reent]>, char *<[str]>, const char *<[fmt]>,

 * va_list <[list]>);

 * TRAD_SYNOPSIS

 * #include <stdio.h>

 * #include <varargs.h>

 * int vprintf( <[fmt]>, <[list]>)

 * char *<[fmt]>;

 * va_list <[list]>;

 * int vfprintf(<[fp]>, <[fmt]>, <[list]>)

 * FILE *<[fp]>;

 * char *<[fmt]>;

 * va_list <[list]>;

 * int vsprintf(<[str]>, <[fmt]>, <[list]>)

 * char *<[str]>;

 * char *<[fmt]>;

 * va_list <[list]>;

 * int _vprintf_r(<[reent]>, <[fmt]>, <[list]>)

 * char *<[reent]>;

 * char *<[fmt]>;

 * va_list <[list]>;

 * int _vfprintf_r(<[reent]>, <[fp]>, <[fmt]>, <[list]>)

 * char *<[reent]>;

 * FILE *<[fp]>;

 * char *<[fmt]>;

 * va_list <[list]>;

 * int _vsprintf_r(<[reent]>, <[str]>, <[fmt]>, <[list]>)

 * char *<[reent]>;

 * char *<[str]>;

 * char *<[fmt]>;

 * va_list <[list]>;

 * <<vprintf>>, <<vfprintf>>, and <<vsprintf>> are (respectively)

 * variants of <<printf>>, <<fprintf>>, and <<sprintf>>.  They differ

 * only in allowing their caller to pass the variable argument list as a

 * <<va_list>> object (initialized by <<va_start>>) rather than directly

 * accepting a variable number of arguments.

 * RETURNS

 * The return values are consistent with the corresponding functions:

 * <<vsprintf>> returns the number of bytes in the output string,

 * save that the concluding <<NULL>> is not counted.

 * <<vprintf>> and <<vfprintf>> return the number of characters transmitted.

 * If an error occurs, <<vprintf>> and <<vfprintf>> return <<EOF>>. No

 * error returns occur for <<vsprintf>>.

 * PORTABILITY

 * ANSI C requires all three functions.

 * Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,

 * <<lseek>>, <<read>>, <<sbrk>>, <<write>>.

 * 

 *

 */

 /*-

  * Copyright (c) 1990 The Regents of the University of California.

  * All rights reserved.

  *

  * This code is derived from software contributed to Berkeley by

  * Chris Torek.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions

  * are met:

  * 1. Redistributions of source code must retain the above copyright

  *    notice, this list of conditions and the following disclaimer.

  * 2. Redistributions in binary form must reproduce the above copyright

  *    notice, this list of conditions and the following disclaimer in the

  *    documentation and/or other materials provided with the distribution.

  * 3. All advertising materials mentioning features or use of this software

  *    must display the following acknowledgement:

  *	This product includes software developed by the University of

  *	California, Berkeley and its contributors.

  * 4. Neither the name of the University nor the names of its contributors

  *    may be used to endorse or promote products derived from this software

  *    without specific prior written permission.

  *

  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

  * SUCH DAMAGE.

  */

 /*

  * Actual printf innards.

  *

  * This code is large and complicated...

  */

 #if 1

 #define _NO_LONGLONG

 #endif

 #include <_ansi.h>

 #include <stdio_r.h>

 #include <stdlib_r.h>

 #include <string.h>

 #include <reent.h>

 #include <stdarg.h>

 #include "LOCAL.H"

 #include "FVWRITE.H"

 //cm

 #include <stdlib.h>

 /*

  * Flush out all the vectors defined by the given uio,

  * then reset it so that it can be reused.

  */

 static int

 __sprint(FILE *fp,register struct __suio *uio)

 {

 	register int err;

 	if (uio->uio_resid == 0) {

 		uio->uio_iovcnt = 0;

 		return (0);

 	}

 	err = __sfvwrite(fp, uio);

 	uio->uio_resid = 0;

 	uio->uio_iovcnt = 0;

 	return (err);

 }

 /*

  * Helper function for `fprintf to unbuffered unix file': creates a

  * temporary buffer.  We only work on write-only files; this avoids

  * worries about ungetc buffers and so forth.

  */

 static int

 __sbprintf(register FILE *fp,const char *fmt,va_list ap)

 {

 	int ret;

 	FILE fake;

 	unsigned char buf[BUFSIZ];

 	/* copy the important variables */

 	fake._data = fp->_data;

 	fake._flags = (short)(fp->_flags & ~__SNBF);

 	fake._file = fp->_file;

 	fake._cookie = fp->_cookie;

 	fake._write = fp->_write;

 	/* set up the buffer */

 	fake._bf._base = fake._p = buf;

 	fake._bf._size = fake._w = sizeof(buf);

 	fake._lbfsize = 0;	/* not actually used, but Just In Case */

 	/* do the work, then copy any error status */

 	ret = vfprintf(&fake, fmt, ap);

 	if (ret >= 0 && fflush(&fake))

 		ret = EOF;

 	if (fake._flags & __SERR)

 		fp->_flags |= __SERR;

 	return (ret);

 }

 /* #include <locale.h>   for decimal_point */

 #include <math.h>

 #include "FLOATIO.H"

 #define	BUF		(MAXEXP+MAXFRACT+1)	/* + decimal point */

 #define	DEFPREC		6

 extern int e32cvt (char *buf, int buflen, double, int width, int prec, int flags, int fmt);

 /*

  * Macros for converting digits to letters and vice versa

  */

 #define	to_digit(c)	((c) - '0')

 #define is_digit(c)	((unsigned)to_digit(c) <= 9)

 #define	to_char(n)	((n) + '0')

 /*

  * Flags used during conversion.

  */

 #define	ALT		0x001		/* alternate form */

 #define	HEXPREFIX	0x002		/* add 0x or 0X prefix */

 #define	LADJUST		0x004		/* left adjustment */

 #define	LONGDBL		0x008		/* long double; unimplemented */

 #define	LONGINT		0x010		/* long integer */

 #define	QUADINT		0x020		/* quad integer */

 #define	SHORTINT	0x040		/* short integer */

 #define	ZEROPAD		0x080		/* zero (as opposed to blank) pad */

 #define FPT		0x100		/* Floating point number */

 EXPORT_C int 

 vfprintf (FILE * fp, const char *fmt0, va_list ap)

 {

   return _vfprintf_r (fp->_data, fp, fmt0, ap);

 }

 /**

 A reentrant version of vfprintf().

 */

 EXPORT_C int 

 _vfprintf_r (struct _reent *data, FILE * fp, const char *fmt0, va_list ap)

 {

 	register char *fmt;	/* format string */

 	register int ch;	/* character from fmt */

 	register int n, m;	/* handy integers (short term usage) */

 	register char *cp;	/* handy char pointer (short term usage) */

 	register struct __siov *iovp;/* for PRINT macro */

 	register int flags;	/* flags as above */

 	int ret;		/* return value accumulator */

 	int width;		/* width from format (%8d), or 0 */

 	int prec;		/* precision from format (%.3d), or -1 */

 	char sign;		/* sign prefix (' ', '+', '-', or \0) */

 	wchar_t wc;

 #if 0

 	char *decimal_point = "."; /* localeconv()->decimal_point; */

 #endif

 //	char softsign;		/* temporary negative sign for floats */

 	double _double;		/* double precision arguments %[eEfgG] */

 //	int expt;		/* integer value of exponent */

 //	int expsize;		/* character count for expstr */

 //	int ndig;		/* actual number of digits returned by cvt */

 //	char expstr[7];		/* buffer for exponent string */

 #ifndef _NO_LONGLONG

 #define	quad_t	  long long

 #define	u_quad_t  unsigned long long

 #endif

 #ifndef _NO_LONGLONG

 	u_quad_t _uquad;	/* integer arguments %[diouxX] */

 #else

 	u_long _uquad;

 #endif

 	enum { OCT, DEC, HEX } base;/* base for [diouxX] conversion */

 	int dprec;		/* a copy of prec if [diouxX], 0 otherwise */

 	int realsz;		/* field size expanded by dprec */

 	int size;		/* size of converted field or string */

 	char *xdigs = NULL;	/* digits for [xX] conversion */

 #define NIOV 8

 	struct __suio uio;	/* output information: summary */

 	struct __siov iov[NIOV];/* ... and individual io vectors */

 	char buf[BUF];		/* space for %c, %[diouxX], %[eEfgG] */

 	char ox[2];		/* space for 0x hex-prefix */

 	/*

 	 * Choose PADSIZE to trade efficiency vs. size.  If larger printf

 	 * fields occur frequently, increase PADSIZE and make the initialisers

 	 * below longer.

 	 */

 #define	PADSIZE	16		/* pad chunk size */

 	static const char blanks[PADSIZE] =

 	 {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};

 	static const char zeroes[PADSIZE] =

 	 {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};

 	/*

 	 * BEWARE, these `goto error' on error, and PAD uses `n'.

 	 */

 #define	PRINT(ptr, len) { \

 	iovp->iov_base = (ptr); \

 	iovp->iov_len = (len); \

 	uio.uio_resid += (len); \

 	iovp++; \

 	if (++uio.uio_iovcnt >= NIOV) { \

 		if (__sprint(fp, &uio)) \

 			goto error; \

 		iovp = iov; \

 	} \

 }

 #define	PAD(howmany, with) { \

 	if ((n = (howmany)) > 0) { \

 		while (n > PADSIZE) { \

 			PRINT(with, PADSIZE); \

 			n -= PADSIZE; \

 		} \

 		PRINT(with, n); \

 	} \

 }

 #define	FLUSH() { \

 	if (uio.uio_resid && __sprint(fp, &uio)) \

 		goto error; \

 	uio.uio_iovcnt = 0; \

 	iovp = iov; \

 }

 	/*

 	 * To extend shorts properly, we need both signed and unsigned

 	 * argument extraction methods.

 	 */

 #ifndef _NO_LONGLONG

 #define	SARG() \

 	(flags&QUADINT ? va_arg(ap, quad_t) : \

 	    flags&LONGINT ? va_arg(ap, long) : \

 	    flags&SHORTINT ? (long)(short)va_arg(ap, int) : \

 	    (long)va_arg(ap, int))

 #define	UARG() \

 	(flags&QUADINT ? va_arg(ap, u_quad_t) : \

 	    flags&LONGINT ? va_arg(ap, u_long) : \

 	    flags&SHORTINT ? (u_long)(u_short)va_arg(ap, int) : \

 	    (u_long)va_arg(ap, u_int))

 #else

 #define	SARG() \

 	(flags&LONGINT ? va_arg(ap, long) : \

 	    flags&SHORTINT ? (long)(short)va_arg(ap, int) : \

 	    (long)va_arg(ap, int))

 #define	UARG() \

 	(flags&LONGINT ? va_arg(ap, u_long) : \

 	    flags&SHORTINT ? (u_long)(u_short)va_arg(ap, int) : \

 	    (u_long)va_arg(ap, u_int))

 #endif

 	CHECK_INIT (fp);

 	/* sorry, fprintf(read_only_file, "") returns EOF, not 0 */

 	if (cantwrite(fp))

 		return (EOF);

 	/* optimise fprintf(stderr) (and other unbuffered Unix files) */

 	if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) &&

 	    fp->_file >= 0)

 		return (__sbprintf(fp, fmt0, ap));

 	fmt = (char *)fmt0;

 	uio.uio_iov = iovp = iov;

 	uio.uio_resid = 0;

 	uio.uio_iovcnt = 0;

 	ret = 0;

 	/*

 	 * Scan the format for conversions (`%' character).

 	 */

 	for (;;) {

 		cp = fmt;

 		while ((n = mbtowc(&wc, fmt, MB_CUR_MAX)) > 0) {

 			fmt += n;

 			if (wc == L'%') {

 				fmt--;

 				break;

 			}

 		}

 		if ((m = fmt - cp) != 0) {

 			PRINT(cp, m);

 			ret += m;

 		}

 		if (n <= 0)

 			goto done;

 		fmt++;		/* skip over '%' */

 		flags = 0;

 		dprec = 0;

 		width = 0;

 		prec = -1;

 		sign = '\0';

 rflag:		ch = *fmt++;

 reswitch:	switch (ch) {

 		case ' ':

 			/*

 			 * ``If the space and + flags both appear, the space

 			 * flag will be ignored.''

 			 *	-- ANSI X3J11

 			 */

 			if (!sign)

 				sign = ' ';

 			goto rflag;

 		case '#':

 			flags |= ALT;

 			goto rflag;

 		case '*':

 			/*

 			 * ``A negative field width argument is taken as a

 			 * - flag followed by a positive field width.''

 			 *	-- ANSI X3J11

 			 * They don't exclude field widths read from args.

 			 */

 			if ((width = va_arg(ap, int)) >= 0)

 				goto rflag;

 			width = -width;

 			/* FALLTHROUGH */

 		case '-':

 			flags |= LADJUST;

 			goto rflag;

 		case '+':

 			sign = '+';

 			goto rflag;

 		case '.':

 			if ((ch = *fmt++) == '*') {

 				n = va_arg(ap, int);

 				prec = n < 0 ? -1 : n;

 				goto rflag;

 			}

 			n = 0;

 			while (is_digit(ch)) {

 				n = 10 * n + to_digit(ch);

 				ch = *fmt++;

 			}

 			prec = n < 0 ? -1 : n;

 			goto reswitch;

 		case '0':

 			/*

 			 * ``Note that 0 is taken as a flag, not as the

 			 * beginning of a field width.''

 			 *	-- ANSI X3J11

 			 */

 			flags |= ZEROPAD;

 			goto rflag;

 		case '1': case '2': case '3': case '4':

 		case '5': case '6': case '7': case '8': case '9':

 			n = 0;

 			do {

 				n = 10 * n + to_digit(ch);

 				ch = *fmt++;

 			} while (is_digit(ch));

 			width = n;

 			goto reswitch;

 		case 'L':

 			flags |= LONGDBL;

 			goto rflag;

 		case 'h':

 			flags |= SHORTINT;

 			goto rflag;

 		case 'l':

 			if (*fmt == 'l') {

 				fmt++;

 				flags |= QUADINT;

 			} else {

 				flags |= LONGINT;

 			}

 			goto rflag;

 		case 'q':

 			flags |= QUADINT;

 			goto rflag;

 		case 'c':

 			*(cp = buf) = (char)va_arg(ap, int);

 			size = 1;

 			sign = '\0';

 			break;

 		case 'D':

 			flags |= LONGINT;

 			/*FALLTHROUGH*/

 		case 'd':

 		case 'i':

 			_uquad = SARG();

 #ifndef _NO_LONGLONG

 			if ((quad_t)_uquad < 0)

 #else

 			if ((long) _uquad < 0)

 #endif

 			{

 #ifndef _NO_LONGLONG

 				_uquad = -_uquad;

 #else

 				_uquad = (u_long)(-(long)_uquad);

 #endif

 				sign = '-';

 			}

 			base = DEC;

 			goto number;

 		case 'e':

 		case 'E':

 		case 'f':

 		case 'g':

 		case 'G':

 			if (prec == -1) {

 				prec = DEFPREC;

 			} else if ((ch == 'g' || ch == 'G') && prec == 0) {

 				prec = 1;

 			}

 			if (flags & LONGDBL) {

 				_double = (double) va_arg(ap, long double);

 			} else {

 				_double = va_arg(ap, double);

 			}

 			/* do this before tricky precision changes */

 			if (isinf(_double)) {

 				if (_double < 0)

 					sign = '-';

 				cp = "Inf";

 				size = 3;

 				break;

 			}

 			if (isnan(_double)) {

 				cp = "NaN";

 				size = 3;

 				break;

 			}

 			flags |= FPT;

 #if 0

 			cp = cvt(data, _double, prec, flags, &softsign,

 				&expt, ch, &ndig);

 			if (ch == 'g' || ch == 'G') {

 				if (expt <= -4 || expt > prec)

 					ch = (ch == 'g') ? 'e' : 'E';

 				else

 					ch = 'g';

 			} 

 			if (ch <= 'e') {	/* 'e' or 'E' fmt */

 				--expt;

 				expsize = exponent(expstr, expt, ch);

 				size = expsize + ndig;

 				if (ndig > 1 || flags & ALT)

 					++size;

 			} else if (ch == 'f') {		/* f fmt */

 				if (expt > 0) {

 					size = expt;

 					if (prec || flags & ALT)

 						size += prec + 1;

 				} else	/* "0.X" */

 					size = prec + 2;

 			} else if (expt >= ndig) {	/* fixed g fmt */

 				size = expt;

 				if (flags & ALT)

 					++size;

 			} else

 				size = ndig + (expt > 0 ?

 					1 : 2 - expt);

 			if (softsign)

 				sign = '-';

 #else

 			if (_double < 0) {

 				_double = -_double;

 				sign = '-';

 			}

 			size = e32cvt(buf, BUF, _double, width, prec, flags, ch);

 			cp=buf;

 #endif

 			break;

 		case 'n':

 #ifndef _NO_LONGLONG

 			if (flags & QUADINT)

 				*va_arg(ap, quad_t *) = ret;

 			else 

 #endif

 			if (flags & LONGINT)

 				*va_arg(ap, long *) = ret;

 			else if (flags & SHORTINT)

 				*va_arg(ap, short *) = (short)ret;

 			else

 				*va_arg(ap, int *) = ret;

 			continue;	/* no output */

 		case 'O':

 			flags |= LONGINT;

 			/*FALLTHROUGH*/

 		case 'o':

 			_uquad = UARG();

 			base = OCT;

 			goto nosign;

 		case 'p':

 			/*

 			 * ``The argument shall be a pointer to void.  The

 			 * value of the pointer is converted to a sequence

 			 * of printable characters, in an implementation-

 			 * defined manner.''

 			 *	-- ANSI X3J11

 			 */

 			/* NOSTRICT */

 			_uquad = (u_long)va_arg(ap, void *);

 			base = HEX;

 			xdigs = "0123456789abcdef";

 			flags |= HEXPREFIX;

 			ch = 'x';

 			goto nosign;

 		case 's':

 			if ((cp = va_arg(ap, char *)) == NULL)

 				cp = "(null)";

 			if (prec >= 0) {

 				/*

 				 * can't use strlen; can only look for the

 				 * NUL in the first `prec' characters, and

 				 * strlen() will go further.

 				 */

 				char *p = (char *)memchr(cp, 0, prec);

 				if (p != NULL) {

 					size = p - cp;

 					if (size > prec)

 						size = prec;

 				} else

 					size = prec;

 			} else

 				size = strlen(cp);

 			sign = '\0';

 			break;

 		case 'U':

 			flags |= LONGINT;

 			/*FALLTHROUGH*/

 		case 'u':

 			_uquad = UARG();

 			base = DEC;

 			goto nosign;

 		case 'X':

 			xdigs = "0123456789ABCDEF";

 			goto hex;

 		case 'x':

 			xdigs = "0123456789abcdef";

 hex:			_uquad = UARG();

 			base = HEX;

 			/* leading 0x/X only if non-zero */

 			if (flags & ALT && _uquad != 0)

 				flags |= HEXPREFIX;

 			/* unsigned conversions */

 nosign:			sign = '\0';

 			/*

 			 * ``... diouXx conversions ... if a precision is

 			 * specified, the 0 flag will be ignored.''

 			 *	-- ANSI X3J11

 			 */

 number:			if ((dprec = prec) >= 0)

 				flags &= ~ZEROPAD;

 			/*

 			 * ``The result of converting a zero value with an

 			 * explicit precision of zero is no characters.''

 			 *	-- ANSI X3J11

 			 */

 			cp = buf + BUF;

 			if (_uquad != 0 || prec != 0) {

 				/*

 				 * Unsigned mod is hard, and unsigned mod

 				 * by a constant is easier than that by

 				 * a variable; hence this switch.

 				 */

 				switch (base) {

 				case OCT:

 					do {

 						*--cp = (char)to_char(_uquad & 7);

 						_uquad >>= 3;

 					} while (_uquad);

 					/* handle octal leading 0 */

 					if (flags & ALT && *cp != '0')

 						*--cp = '0';

 					break;

 				case DEC:

 					/* many numbers are 1 digit */

 					while (_uquad >= 10) {

 						*--cp = (char)to_char(_uquad % 10);

 						_uquad /= 10;

 					}

 					*--cp = (char)to_char(_uquad);

 					break;

 				case HEX:

 					do {

 						*--cp = xdigs[_uquad & 15];

 						_uquad >>= 4;

 					} while (_uquad);

 					break;

 				default:

 					cp = "bug in vfprintf: bad base";

 					size = strlen(cp);

 					goto skipsize;

 				}

 			}

 			/* Workaround GCC compiler bug: size = buf + BUF - cp */

 			{

 				char *temp = buf+BUF;

 				size = temp - cp;

 			}

 		skipsize:

 			break;

 		default:	/* "%?" prints ?, unless ? is NUL */

 			if (ch == '\0')

 				goto done;

 			/* pretend it was %c with argument ch */

 			cp = buf;

 			*cp = (char)ch;

 			size = 1;

 			sign = '\0';

 			break;

 		}

 		/*

 		 * All reasonable formats wind up here.  At this point, `cp'

 		 * points to a string which (if not flags&LADJUST) should be

 		 * padded out to `width' places.  If flags&ZEROPAD, it should

 		 * first be prefixed by any sign or other prefix; otherwise,

 		 * it should be blank padded before the prefix is emitted.

 		 * After any left-hand padding and prefixing, emit zeroes

 		 * required by a decimal [diouxX] precision, then print the

 		 * string proper, then emit zeroes required by any leftover

 		 * floating precision; finally, if LADJUST, pad with blanks.

 		 *

 		 * Compute actual size, so we know how much to pad.

 		 * size excludes decimal prec; realsz includes it.

 		 */

 		realsz = dprec > size ? dprec : size;

 		if (sign)

 			realsz++;

 		else if (flags & HEXPREFIX)

 			realsz+= 2;

 		/* right-adjusting blank padding */

 		if ((flags & (LADJUST|ZEROPAD)) == 0)

 			PAD(width - realsz, blanks);

 		/* prefix */

 		if (sign) {

 			PRINT(&sign, 1);

 		} else if (flags & HEXPREFIX) {

 			ox[0] = '0';

 			ox[1] = (char)ch;

 			PRINT(ox, 2);

 		}

 		/* right-adjusting zero padding */

 		if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)

 			PAD(width - realsz, zeroes);

 		/* leading zeroes from decimal precision */

 		PAD(dprec - size, zeroes);

 		/* the string or number proper */

 		PRINT(cp, size);

 #if 0

 		} else {	/* glue together f_p fragments */

 			if (ch >= 'f') {	/* 'f' or 'g' */

 				if (_double == 0) {

 					/* kludge for __dtoa irregularity */

 					PRINT("0", 1);

 					if (expt < ndig || (flags & ALT) != 0) {

 						PRINT(decimal_point, 1);

 						PAD(ndig - 1, zeroes);

 					}

 				} else if (expt <= 0) {

 					PRINT("0", 1);

 					PRINT(decimal_point, 1);

 					PAD(-expt, zeroes);

 					PRINT(cp, ndig);

 				} else if (expt >= ndig) {

 					PRINT(cp, ndig);

 					PAD(expt - ndig, zeroes);

 					if (flags & ALT)

 						PRINT(".", 1);

 				} else {

 					PRINT(cp, expt);

 					cp += expt;

 					PRINT(".", 1);

 					PRINT(cp, ndig-expt);

 				}

 			} else {	/* 'e' or 'E' */

 				if (ndig > 1 || flags & ALT) {

 					ox[0] = *cp++;

 					ox[1] = '.';

 					PRINT(ox, 2);

 					if (_double || (flags & ALT) == 0) {

 						PRINT(cp, ndig-1);

 					} else	/* 0.[0..] */

 						/* __dtoa irregularity */

 						PAD(ndig - 1, zeroes);

 				} else	/* XeYYY */

 					PRINT(cp, 1);

 				PRINT(expstr, expsize);

 			}

 		}

 #endif

 		/* left-adjusting padding (always blank) */

 		if (flags & LADJUST)

 			PAD(width - realsz, blanks);

 		/* finally, adjust ret */

 		ret += width > realsz ? width : realsz;

 		FLUSH();	/* copy out the I/O vectors */

 	}

 done:

 	FLUSH();

 error:

 	return (__sferror(fp) ? EOF : ret);

 	/* NOTREACHED */

 }

 #if 0

 static char *

 cvt(struct _reent *data,double value,int ndigits, int flags, char *sign, int *decpt, int ch, int *length)

 {

 	int mode, dsgn;

 	char *digits, *bp, *rve;

 	if (ch == 'f') {

 		mode = 3;		/* ndigits after the decimal point */

 	} else {

 		/* To obtain ndigits after the decimal point for the 'e' 

 		 * and 'E' formats, round to ndigits + 1 significant 

 		 * figures.

 		 */

 		if (ch == 'e' || ch == 'E') {

 			ndigits++;

 		}

 		mode = 2;		/* ndigits significant digits */

 	}

 	if (value < 0) {

 		value = -value;

 		*sign = '-';

 	} else

 		*sign = '\000';

 	digits = _dtoa_r(data, value, mode, ndigits, decpt, &dsgn, &rve);

 	if ((ch != 'g' && ch != 'G') || flags & ALT) {	/* Print trailing zeros */

 		bp = digits + ndigits;

 		if (ch == 'f') {

 			if (*digits == '0' && value)

 				*decpt = -ndigits + 1;

 			bp += *decpt;

 		}

 		if (value == 0)	/* kludge for __dtoa irregularity */

 			rve = bp;

 		while (rve < bp)

 			*rve++ = '0';

 	}

 	*length = rve - digits;

 	return (digits);

 }

 static int

 exponent(char *p0, int exp, int fmtch)

 {

 	register char *p, *t;

 	char expbuf[MAXEXP];

 	p = p0;

 	*p++ = (char)fmtch;

 	if (exp < 0) {

 		exp = -exp;

 		*p++ = '-';

 	}

 	else

 		*p++ = '+';

 	t = expbuf + MAXEXP;

 	if (exp > 9) {

 		do {

 			*--t = (char)to_char(exp % 10);

 		} while ((exp /= 10) > 9);

 		*--t = (char)to_char(exp);

 		for (; t < expbuf + MAXEXP; *p++ = *t++);

 	}

 	else {

 		*p++ = '0';

 		*p++ = (char)to_char(exp);

 	}

 	return (p - p0);

 }

 #endif