1 /* Copyright (C) 2003 Manuel Novoa III
3 * This library is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU Lesser General Public
5 * License as published by the Free Software Foundation; either
6 * version 2.1 of the License, or (at your option) any later version.
8 * The GNU C Library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * Lesser General Public License for more details.
13 * You should have received a copy of the GNU Lesser General Public
14 * License along with the GNU C Library; see the file COPYING.LIB. If
15 * not, see <http://www.gnu.org/licenses/>.
18 /* ATTENTION! ATTENTION! ATTENTION! ATTENTION! ATTENTION!
20 * This code is currently under development. Also, I plan to port
21 * it to elks which is a 16-bit environment with a fairly limited
22 * compiler. Therefore, please refrain from modifying this code
23 * and, instead, pass any bug-fixes, etc. to me. Thanks. Manuel
25 * ATTENTION! ATTENTION! ATTENTION! ATTENTION! ATTENTION! */
27 #ifndef _UINTMAXTOSTR_H
28 #define _UINTMAXTOSTR_H 1
34 #if INTMAX_MAX <= 2147483647L
35 #define __UIM_BUFLEN 12 /* 10 digits + 1 nul + 1 sign */
36 #elif INTMAX_MAX <= 9223372036854775807LL
37 #define __UIM_BUFLEN 22 /* 20 digits + 1 nul + 1 sign */
39 #error unknown number of digits for intmax_t!
42 #ifdef LLONG_MAX /* --------------- */
43 #if LLONG_MAX <= 2147483647L
44 #define __UIM_BUFLEN_LLONG 12 /* 10 digits + 1 nul + 1 sign */
45 #elif LLONG_MAX <= 9223372036854775807LL
46 #define __UIM_BUFLEN_LLONG 22 /* 20 digits + 1 nul + 1 sign */
48 #error unknown number of digits for long long!
50 #endif /* ULLONG_MAX ----------------------------- */
52 #if LONG_MAX <= 2147483647L
53 #define __UIM_BUFLEN_LONG 12 /* 10 digits + 1 nul + 1 sign */
54 #elif LONG_MAX <= 9223372036854775807LL
55 #define __UIM_BUFLEN_LONG 22 /* 20 digits + 1 nul + 1 sign */
57 #error unknown number of digits for long!
61 #define __UIM_BUFLEN_INT 7 /* 10 digits + 1 nul + 1 sign */
62 #elif INT_MAX <= 2147483647L
63 #define __UIM_BUFLEN_INT 12 /* 10 digits + 1 nul + 1 sign */
65 #error unknown number of digits for int!
70 __UIM_GROUP = ',', /* Base 10 locale-dependent grouping. */
71 __UIM_LOWER = 'a' - 10,
72 __UIM_UPPER = 'A' - 10,
75 /* Convert the int val to a string in base abs(base). val is treated as
76 * an unsigned ??? int type if base > 0, and signed if base < 0. This
77 * is an internal function with _no_ error checking done unless assert()s
80 * Note: bufend is a pointer to the END of the buffer passed.
83 * p = _xltostr(buf + sizeof(buf) - 1, {unsigned int}, 10, __UIM_DECIMAL)
84 * p = _xltostr(buf + sizeof(buf) - 1, {int}, -10, __UIM_DECIMAL)
86 * WARNING: If base > 10, case _must_be_ either __UIM_LOWER or __UIM_UPPER
87 * for lower and upper case alphas respectively.
88 * WARNING: If val is really a signed type, make sure base is negative!
89 * Otherwise, you could overflow your buffer.
91 extern char *_uintmaxtostr(char * __restrict bufend, uintmax_t uval,
92 int base, __UIM_CASE alphacase) attribute_hidden;
94 /* TODO -- make this either a (possibly inline) function? */
96 #define _int10tostr(bufend, intval) \
97 _uintmaxtostr((bufend), (intval), -10, __UIM_DECIMAL)
98 #else /* bcc doesn't do prototypes, we need to explicitly cast */
99 #define _int10tostr(bufend, intval) \
100 _uintmaxtostr((bufend), (uintmax_t)(intval), -10, __UIM_DECIMAL)
103 #define __BUFLEN_INT10TOSTR __UIM_BUFLEN_INT
105 #endif /* _UINTMAXTOSTR_H */