| commit | 6d32275cd2948aa93949d819b09d3957a2ef48dd | |
| author | Berk Hess <hess@kth.se> | |
| Sat, 22 Apr 2017 09:41:54 +0000 (22 11:41 +0200) | ||
| committer | Erik Lindahl <erik.lindahl@gmail.com> | |
| Sat, 9 Sep 2017 07:24:12 +0000 (9 09:24 +0200) | ||
| tree | 9d76c7edd74fca4eaa958a534812db5539973a70 | treesnapshot (tar.gz zip) |
| parent | b83e24351c871122d37df345f03d567421d7dae4 | commitdiff |
Avoid inf in SIMD double sqrt()
Arguments >0 and <float_min to double precision SIMD sqrt()
would produce inf on many SIMD architectures. Now sqrt() will
return 0 for arguments in this range, which is not fully correct,
but should be unproblematic.
Updated the tests to check for this range and to produce output
that checks all double precision mantissa bits.
Fixes #2164.
Refs #2163.
Change-Id: Ic6d2c6d4102d602703b40e7e8bcc1974a7283f7c
Arguments >0 and <float_min to double precision SIMD sqrt()
would produce inf on many SIMD architectures. Now sqrt() will
return 0 for arguments in this range, which is not fully correct,
but should be unproblematic.
Updated the tests to check for this range and to produce output
that checks all double precision mantissa bits.
Fixes #2164.
Refs #2163.
Change-Id: Ic6d2c6d4102d602703b40e7e8bcc1974a7283f7c
| src/gromacs/simd/simd_math.h | diffblobblamehistory | |
| src/gromacs/simd/tests/simd_math.cpp | diffblobblamehistory |