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/* Copyright (C) 2003 Manuel Novoa III
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* The GNU C Library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the GNU C Library; see the file COPYING.LIB. If
* not, see <http://www.gnu.org/licenses/>.
*/
/* ATTENTION! ATTENTION! ATTENTION! ATTENTION! ATTENTION!
*
* This code is currently under development. Also, I plan to port
* it to elks which is a 16-bit environment with a fairly limited
* compiler. Therefore, please refrain from modifying this code
* and, instead, pass any bug-fixes, etc. to me. Thanks. Manuel
*
* ATTENTION! ATTENTION! ATTENTION! ATTENTION! ATTENTION! */
#ifndef _UINTMAXTOSTR_H
#define _UINTMAXTOSTR_H 1
#include <features.h>
#include <limits.h>
#include <stdint.h>
#if INTMAX_MAX <= 2147483647L
#define __UIM_BUFLEN 12 /* 10 digits + 1 nul + 1 sign */
#elif INTMAX_MAX <= 9223372036854775807LL
#define __UIM_BUFLEN 22 /* 20 digits + 1 nul + 1 sign */
#else
#error unknown number of digits for intmax_t!
#endif
#ifdef LLONG_MAX /* --------------- */
#if LLONG_MAX <= 2147483647L
#define __UIM_BUFLEN_LLONG 12 /* 10 digits + 1 nul + 1 sign */
#elif LLONG_MAX <= 9223372036854775807LL
#define __UIM_BUFLEN_LLONG 22 /* 20 digits + 1 nul + 1 sign */
#else
#error unknown number of digits for long long!
#endif
#endif /* ULLONG_MAX ----------------------------- */
#if LONG_MAX <= 2147483647L
#define __UIM_BUFLEN_LONG 12 /* 10 digits + 1 nul + 1 sign */
#elif LONG_MAX <= 9223372036854775807LL
#define __UIM_BUFLEN_LONG 22 /* 20 digits + 1 nul + 1 sign */
#else
#error unknown number of digits for long!
#endif
#if INT_MAX <= 32767
#define __UIM_BUFLEN_INT 7 /* 10 digits + 1 nul + 1 sign */
#elif INT_MAX <= 2147483647L
#define __UIM_BUFLEN_INT 12 /* 10 digits + 1 nul + 1 sign */
#else
#error unknown number of digits for int!
#endif
typedef enum {
__UIM_DECIMAL = 0,
__UIM_GROUP = ',', /* Base 10 locale-dependent grouping. */
__UIM_LOWER = 'a' - 10,
__UIM_UPPER = 'A' - 10,
} __UIM_CASE;
/* Convert the int val to a string in base abs(base). val is treated as
* an unsigned ??? int type if base > 0, and signed if base < 0. This
* is an internal function with _no_ error checking done unless assert()s
* are enabled.
*
* Note: bufend is a pointer to the END of the buffer passed.
* Call like this:
* char buf[SIZE], *p;
* p = _xltostr(buf + sizeof(buf) - 1, {unsigned int}, 10, __UIM_DECIMAL)
* p = _xltostr(buf + sizeof(buf) - 1, {int}, -10, __UIM_DECIMAL)
*
* WARNING: If base > 10, case _must_be_ either __UIM_LOWER or __UIM_UPPER
* for lower and upper case alphas respectively.
* WARNING: If val is really a signed type, make sure base is negative!
* Otherwise, you could overflow your buffer.
*/
extern char *_uintmaxtostr(char * __restrict bufend, uintmax_t uval,
int base, __UIM_CASE alphacase) attribute_hidden;
/* TODO -- make this either a (possibly inline) function? */
#ifndef __BCC__
#define _int10tostr(bufend, intval) \
_uintmaxtostr((bufend), (intval), -10, __UIM_DECIMAL)
#else /* bcc doesn't do prototypes, we need to explicitly cast */
#define _int10tostr(bufend, intval) \
_uintmaxtostr((bufend), (uintmax_t)(intval), -10, __UIM_DECIMAL)
#endif
#define __BUFLEN_INT10TOSTR __UIM_BUFLEN_INT
#endif /* _UINTMAXTOSTR_H */
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