| commit | d7494f25654c10c399b36640d2acd0550e331d6d | [log] [tgz] |
|---|---|---|
| author | Szabolcs Nagy <szabolcs.nagy@arm.com> | Tue Jun 12 09:42:28 2018 +0100 |
| committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | Tue Jun 12 09:48:41 2018 +0100 |
| tree | a3a200325a1c98dac66042c8958975bfb4fab0b3 | |
| parent | 764b4bfb2b6faa2c38edebf0895aff1f7cf972a2 [diff] |
More portable default setting for HAVE_FAST_FMA FP_FAST_FMA is the standard way to decide if fma is fast, unfortunately in practice it can be defined even if fma is not inlined (e.g. with -fno-builtin-fma), and it does not really help if the libc has a single instruction implementation: the call overhead is too much. Most of the time it is the correct check though and without configure time checks this is the closest we can get.