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Diffstat (limited to '')
-rw-r--r-- | include/bits/types.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/include/bits/types.h b/include/bits/types.h new file mode 100644 index 0000000..1fffa0c --- /dev/null +++ b/include/bits/types.h @@ -0,0 +1,92 @@ +/** + * slibc — Yet another C library + * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org) + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +/* That's right. No inclusion-guard; we want multiple + * headers to be able to define types by including this + * header without the need of keeping in mind which + * order headers are included. */ + + +/** + * Signed integer type of the result of subtracting two pointers. + * May not be greater than the with of type long. + */ +#if defined(__NEED_ptrdiff_t) && !defined(__DEFINED_ptrdiff_t) +# define __DEFINED_ptrdiff_t +typedef signed long int ptrdiff_t; +#endif + + +/** + * Unsigned version of `ptrdiff_t` + */ +#if defined(__NEED_uptrdiff_t) && !defined(__DEFINED_uptrdiff_t) +# define __DEFINED_uptrdiff_t +typedef unsigned long int uptrdiff_t; +#endif + + +/** + * Integer type which can represent any character. + * May not be greater than the with of type long. + * + * Unicode originally had an, inclusive upper limit + * of U+FFFF. UTF-8 however had 31-bits (U+7FFFFFFF). + * Unicode is now limited to 0x10FFFF. + * + * 32 bits should be sufficient (long is at least 32 + * bits), but why limit further than POSIX does. + */ +#if defined(__NEED_wchar_t) && !defined(__DEFINED_wchar_t) +# define __DEFINED_wchar_t +typedef long int wchar_t; +#endif + + +/** + * Unsigned integer type of the result of the + * `sizeof` operator. May not be greater than the + * with of type long. + */ +#if defined(__NEED_size_t) && !defined(__DEFINED_size_t) +# define __DEFINED_size_t +typedef unsigned long int size_t; +#endif + + +/** + * Signed version of `size_t` + */ +#if defined(__NEED_ssize_t) && !defined(__DEFINED_ssize_t) +# define __DEFINED_ssize_t +typedef signed long int ssize_t; +#endif + + +/** + * A type, of unspecified construct, whose alignment requirement + * is at least as strict as that of every scalar type. + */ +#if defined(__NEED_max_align_t) && !defined(__DEFINED_max_align_t) +# define __DEFINED_max_align_t +typedef struct +{ + long long int __lli __attribute__((__aligned__(__alignof__(long long int)))); + long double __ld __attribute__((__aligned__(__alignof__(long double)))); +} max_align_t; +#endif + |