| @node isfinite |
| @section @code{isfinite} |
| @findex isfinite |
| |
| POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/isfinite.html} |
| |
| Gnulib module: isfinite |
| |
| Portability problems fixed by Gnulib: |
| @itemize |
| @item |
| This macro is missing on some platforms: |
| Mac OS X 10.5, OpenBSD 3.8, AIX 5.1, IRIX 6.5, Solaris 11.4. |
| @item |
| This macro incorrectly yields true for some @samp{double} arguments, on some |
| platforms: |
| Linux/ia64 (signalling NaNs). |
| @end itemize |
| |
| Portability problems not fixed by Gnulib: |
| @itemize |
| @item |
| It is implementation-dependent whether @code{isfinite} raises an |
| exception given a signaling NaN operand. |
| @item |
| This macro returns an unspecified result when given noncanonical values |
| such as unnormalized numbers, pseudo-denormals, pseudo-NaNs, |
| pseudo-Infinities, and pseudo-zeroes. |
| @end itemize |
