GitHub-Proxy/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2025-08-03 10:40:39 +08:00
Code Issues Packages Projects Releases Wiki Activity
10,530 Commits 14 Branches 89 Tags
Commit Graph

53 Commits

Author SHA1 Message Date
Gael Guennebaud
b477d60bc6 Extend the generic psin_float code to handle cosine and make SSE and AVX use it (-> this adds pcos for AVX) 2018-11-30 11:26:30 +01:00
Gael Guennebaud
fa7fd61eda Unify SSE/AVX psin functions. 
It is based on the SSE version which is much more accurate, though very slightly slower.
This changeset also includes the following required changes:
 - add packet-float to packet-int type traits
 - add packet float<->int reinterpret casts
 - add faster pselect for AVX based on blendv
 2018-11-27 22:41:51 +01:00
Gael Guennebaud
7655a8af6e cleanup 2018-11-26 23:21:29 +01:00
Gael Guennebaud
502f92fa10 Unify SSE and AVX pexp for double. 2018-11-26 23:12:44 +01:00
Gael Guennebaud
cf8b85d5c5 Unify SSE and AVX implementation of pexp 2018-11-26 16:36:19 +01:00
Gael Guennebaud
2c44c40114 First step toward a unification of packet log implementation, currently only SSE and AVX are unified. 
To this end, I added the following functions: pzero, pcmp_*, pfrexp, pset1frombits functions.
 2018-11-26 14:21:24 +01:00
luz.paz
e3912f5e63 MIsc. source and comment typos 
Found using `codespell` and `grep` from downstream FreeCAD
 2018-03-11 10:01:44 -04:00
Rasmus Munk Larsen
765615609d Update comment for fast sqrt. 2016-10-04 15:08:41 -07:00
Rasmus Munk Larsen
3ed67cb0bb Fix a bug in the implementation of Carmack's fast sqrt algorithm in Eigen (enabled by EIGEN_FAST_MATH), which causes the vectorized parts of the computation to return -0.0 instead of NaN for negative arguments. 
Benchmark speed in Giga-sqrts/s
Intel(R) Xeon(R) CPU E5-1650 v3 @ 3.50GHz
-----------------------------------------
                    SSE        AVX
Fast=1              2.529G     4.380G
Fast=0              1.944G     1.898G
Fast=1 fixed        2.214G     3.739G

This table illustrates the worst case in terms speed impact: It was measured by repeatedly computing the sqrt of an n=4096 float vector that fits in L1 cache. For large vectors the operation becomes memory bound and the differences between the different versions almost negligible.
 2016-10-04 14:22:56 -07:00
Gael Guennebaud
a4c266f827 Factorize the 4 copies of tanh implementations, make numext::tanh consistent with array::tanh, enable fast tanh in fast-math mode only. 2016-08-23 14:23:08 +02:00
Benoit Steiner
8ce46f9d89 Improved implementation of ptanh for SSE and AVX 2016-02-18 13:24:34 -08:00
Benoit Steiner
6d8b1dce06 Avoid implicit cast from double to float. 2016-02-10 18:07:11 -08:00
Benoit Steiner
bfb3fcd94f Optimized implementation of the tanh function for SSE 2016-02-10 08:52:30 -08:00
Benoit Jacob
e6ee18d6b4 Make the GCC workaround for sqrt GCC-only; detect Emscripten as non-GCC 2016-02-10 11:11:49 -05:00
Benoit Jacob
964a95bf5e Work around Emscripten bug - https://github.com/kripken/emscripten/issues/4088 2016-02-10 10:37:22 -05:00
Gael Guennebaud
7cae8918c0 Fix compilation on old gcc+AVX 2016-01-21 20:30:32 +01:00
Gael Guennebaud
8dca9f97e3 Add numext::sqrt function to enable custom optimized implementation. 
This changeset add two specializations for float/double on SSE. Those
are mostly usefull with GCC for which std::sqrt add an extra and costly
check on the result of _mm_sqrt_*. Clang does not add this burden.

In this changeset, only DenseBase::norm() makes use of it.
 2016-01-21 20:18:51 +01:00
Benoit Steiner
4fd7f47692 Added an optimized version of rsqrt for SSE and AVX that is used when EIGEN_FAST_MATH is defined. 2015-03-02 09:38:47 -08:00
Benoit Steiner
f41b1f1666 Added support for fast reciprocal square root computation. 2015-02-26 09:42:41 -08:00
Gael Guennebaud
eb563049f7 Remove some dead stores. 2015-02-18 11:26:48 +01:00
Christoph Hertzberg
84aaa03182 Addendum to bug #859: pexp(NaN) for double did not return NaN, also, plog(NaN) did not return NaN. 
psqrt(NaN) and psqrt(-1) shall return NaN if EIGEN_FAST_MATH==0
 2014-10-20 13:13:43 +02:00
Gael Guennebaud
aa5f79206f Fix bug #859: pexp(NaN) returned Inf instead of NaN 2014-10-20 11:38:51 +02:00
Gael Guennebaud
5c5231ab71 Workaround gcc's default ABI not being able to distinghish between vector types of different sizes. 2014-04-22 16:03:19 +02:00
Gael Guennebaud
9f3f42d66a fix a few "dead stores" warnings 2013-10-26 13:59:02 +02:00
Gael Guennebaud
c47010e3d2 typo 2013-08-19 16:10:00 +02:00
Gael Guennebaud
d4dd6aaed2 Fix bug #642: add vectorization of sqrt for doubles, and make sqrt really safe if EIGEN_FAST_MATH is disabled 2013-08-19 16:02:27 +02:00
Gael Guennebaud
9f11f80db1 Make psqrt works with numeric_limits<float>::min 2013-06-14 10:55:05 +02:00
Jeff Dean
d5fa5001a7 Fix bug #613: psqrt was incorrect for small numbers 2013-06-13 18:17:27 +02:00
Gael Guennebaud
8745da14d8 Fix SSE plog<float> to return -INF on 0 2013-02-14 23:34:05 +01:00
Gael Guennebaud
7d98c864ff fix warning 2012-08-01 10:44:59 +02:00
Gael Guennebaud
22e0ebbc2c fix lower acceptable bound of SSE pexp for double 2012-07-31 23:11:04 +02:00
Gael Guennebaud
e8aa1f00c5 add SSE pexp function for double, make use of _mm_floor_p* for pexp with SSE4.1 2012-07-27 23:40:04 +02:00
Benoit Jacob
69124cfca2 Automatic relicensing to MPL2 using Keirs script. Manual fixup follows. 2012-07-13 14:42:47 -04:00
Gael Guennebaud
a3e700db72 fix bug #475: .exp() now returns +inf when overflow occurs (SSE) 2012-06-14 10:38:39 +02:00
Jitse Niesen
3c412183b2 Get rid of include directives inside namespace blocks (bug #339). 2012-04-15 11:06:28 +01:00
Benoit Jacob
4716040703 bug #86 : use internal:: namespace instead of ei_ prefix 2010-10-25 10:15:22 -04:00
Gael Guennebaud
aa2b46aa91 allow vectorization of mat44.col() by adding a InnerPanel boolean 
template parameter to Block
 2010-07-23 16:29:29 +02:00
Benoit Jacob
97ced33b33 Backed out changeset 40f6e26a247976ba1868520a4747e49e0739a42a 
See thread on mailing list: "InnerPanel change mis-detects alignment?"
 2010-08-11 00:04:06 -04:00
Gael Guennebaud
40f6e26a24 allow vectorization of mat44.col() by adding a InnerPanel boolean 
template parameter to Block
 2010-07-23 16:29:29 +02:00
Gael Guennebaud
ff96c94043 mixing types in product step 2: 
* pload* and pset1 are now templated on the packet type
* gemv routines are now embeded into a structure with
  a consistent API with respect to gemm
* some configurations of vector * matrix and matrix * matrix works fine,
  some need more work...
 2010-07-11 15:48:30 +02:00
Gael Guennebaud
28e64b0da3 email change 2010-06-24 23:21:58 +02:00
Benoit Jacob
f0a6d56f07 fix linking errors with multiply defined functions 2010-06-18 09:01:34 -04:00
Benoit Jacob
134ca4acb3 packet math functions: 
- take const Packet& args like the other packet funcs
 - SSE specializations: make them be actual template specializations
 2010-06-15 08:29:21 -04:00
Hauke Heibel
9d6afdeb22 ei_psqrt fix for zero input 2010-04-01 15:10:52 +02:00
Hauke Heibel
3ea1f97f69 Suppressed the warning for missing assignment generators (forgot that in the last submission). 
Commented Quake3's fast inverser sqrt in SSE's MathFunction header.
 2009-12-15 08:09:14 +01:00
Benoit Jacob
6347b1db5b remove sentence "Eigen itself is part of the KDE project." 
it never made very precise sense. but now does it still make any?
 2009-05-22 20:25:33 +02:00
Gael Guennebaud
1e286464ab * compilation fixes for gcc 3.3 
* test Part::swap
 2009-05-06 08:43:38 +00:00
Benoit Jacob
b60571a193 fix warnings with unused static functions 2009-05-04 12:49:56 +00:00
Gael Guennebaud
c7bb7436f9 make the ei_p* math functions overloads instead of template 
specializations
 2009-04-22 21:35:50 +00:00
Benoit Jacob
0c99de5a17 more patches from Hauke Heibel: compilation/warning fixes from VC++ 2009-04-09 17:19:17 +00:00