| @node abs | |
| @section @code{abs} | |
| @findex abs | |
| POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/abs.html} | |
| Gnulib module: --- | |
| Portability problems fixed by Gnulib: | |
| @itemize | |
| @end itemize | |
| Portability problems not fixed by Gnulib: | |
| @itemize | |
| @item | |
| This function is missing on some platforms: | |
| Android 4.3. | |
| @end itemize |