/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1990, 1993
 *      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. 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.
 */

/*
 * Flags used during conversion.
 */
#define ALT             0x001           /* alternate form */
#define LADJUST         0x004           /* left adjustment */
#define LONGDBL         0x008           /* long double */
#define LONGINT         0x010           /* long integer */
#define LLONGINT        0x020           /* long long integer */
#define SHORTINT        0x040           /* short integer */
#define ZEROPAD         0x080           /* zero (as opposed to blank) pad */
#define FPT             0x100           /* Floating point number */
#define GROUPING        0x200           /* use grouping ("'" flag) */
                                        /* C99 additional size modifiers: */
#define SIZET           0x400           /* size_t */
#define PTRDIFFT        0x800           /* ptrdiff_t */
#define INTMAXT         0x1000          /* intmax_t */
#define CHARINT         0x2000          /* print char using int format */
#define FASTINT         0x4000          /* int_fastN_t */

/*
 * 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')

/* Size of the static argument table. */
#define STATIC_ARG_TBL_SIZE 8

union arg {
        int     intarg;
        u_int   uintarg;
        long    longarg;
        u_long  ulongarg;
        long long longlongarg;
        unsigned long long ulonglongarg;
        ptrdiff_t ptrdiffarg;
        size_t  sizearg;
        intmax_t intmaxarg;
        uintmax_t uintmaxarg;
        void    *pvoidarg;
        char    *pchararg;
        signed char *pschararg;
        short   *pshortarg;
        int     *pintarg;
        long    *plongarg;
        long long *plonglongarg;
        ptrdiff_t *pptrdiffarg;
        ssize_t *pssizearg;
        intmax_t *pintmaxarg;
        double  doublearg;
        long double longdoublearg;
        wint_t  wintarg;
        wchar_t *pwchararg;
};

/* Handle positional parameters. */
int     __find_arguments(const char *, va_list, union arg **);
int     __find_warguments(const wchar_t *, va_list, union arg **);