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| -rw-r--r-- | include/errno.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/include/errno.h b/include/errno.h new file mode 100644 index 0000000..6a94d76 --- /dev/null +++ b/include/errno.h @@ -0,0 +1,46 @@ +/** + * 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/>. + */ +#ifndef _ERRNO_H +#define _ERRNO_H +#include <slibc/version.h> + + +#include <slibc/features.h> + +/* TODO include error definitions */ + + + +/** + * A modifiable lvalue used to describe an error + * that has occurred in the thread. + */ +#define errno (*__errno()) + + +/** + * Helper definition to `errno` used to + * assured that the value is thread-dependent + * and supported on all revisions of C. + */ +volatile int* __errno(void) __GCC_ONLY(__attribute__((__const__))); /* TODO not implemented */ + + + +#endif + |