optimized generic SIMD invsqrt
authorBerk Hess <hess@kth.se>
Wed, 18 Sep 2013 15:39:00 +0000 (17:39 +0200)
committerGerrit Code Review <gerrit@gerrit.gromacs.org>
Tue, 24 Sep 2013 23:30:14 +0000 (01:30 +0200)
commit94e69be7bf0d3f6bbf1d8e247f1e566b6149e780
tree0f36b3df259d2e1e78432bd2d3e75ad4d2009e38
parent1bc531070a94a4d967ad209df71a53069145a85e
optimized generic SIMD invsqrt

The function gmx_invsqrt_pr now uses one instruction less when
FMA is not supported in hardware.
Fixes #1333

Change-Id: Idace7296b88a8ecc0331e22d5bb3088753c478de
include/gmx_simd_macros.h
include/gmx_simd_math_single.h