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1935 Commits

Author SHA1 Message Date
Benoit Steiner
c80587c92b Merged eigen/eigen into default 2016-11-03 03:55:11 -07:00
Gael Guennebaud
a07bb428df bug #1004: improve accuracy of LinSpaced for abs(low) >> abs(high). 2016-11-02 11:34:38 +01:00
Gael Guennebaud
598de8b193 Add pinsertfirst function and implement pinsertlast for complex on SSE/AVX. 2016-11-02 10:38:13 +01:00
Gael Guennebaud
3ecb343dc3 Fix regression in X = (X*X.transpose())/s with X rectangular by deferring resizing of the destination after the creation of the evaluator of the source expression. 2016-10-26 22:50:41 +02:00
Gael Guennebaud
58146be99b bug #1004: one more rewrite of LinSpaced for floating point numbers to guarantee both interpolation and monotonicity. 
This version simply does low+i*step plus a branch to return high if i==size-1.
Vectorization is accomplished with a branch and the help of pinsertlast.
Some quick benchmark revealed that the overhead is really marginal, even when filling small vectors.
 2016-10-25 16:53:09 +02:00
Gael Guennebaud
13fc18d3a2 Add a pinsertlast function replacing the last entry of a packet by a scalar. 
(useful to vectorize LinSpaced)
 2016-10-25 16:48:49 +02:00
Gael Guennebaud
b027d7a8cf bug #1004: remove the inaccurate "sequential" path for LinSpaced, mark respective function as deprecated, and enforce strict interpolation of the higher range using a correction term. 
Now, even with floating point precision, both the 'low' and 'high' bounds are exactly reproduced at i=0 and i=size-1 respectively.
 2016-10-24 20:27:21 +02:00
Gael Guennebaud
53c77061f0 bug #698: rewrite LinSpaced for integer scalar types to avoid overflow and guarantee an even spacing when possible. 
Otherwise, the "high" bound is implicitly lowered to the largest value allowing for an even distribution.
This changeset also disable vectorization for this integer path.
 2016-10-24 15:50:27 +02:00
Gael Guennebaud
e8e56c7642 Add unit test for overflow in LinSpaced 2016-10-24 15:43:51 +02:00
Benoit Steiner
78d2926508 Merged eigen/eigen into default 2016-10-12 13:46:29 -07:00
Gael Guennebaud
f939c351cb Fix SPQR for rectangular matrices 2016-10-12 22:39:33 +02:00
Gael Guennebaud
5c366fe1d7 Merged in rmlarsen/eigen (pull request PR-230) 
Fix a bug in psqrt for SSE and AVX when EIGEN_FAST_MATH=1
 2016-10-12 16:30:51 +00:00
Gael Guennebaud
4860727ac2 Remove static qualifier of free-functions (inline is enough and this helps ICC to find the right overload) 2016-10-07 09:21:12 +02:00
Benoit Steiner
507b661106 Renamed predux_half into predux_downto4 2016-10-06 17:57:04 -07:00
Gael Guennebaud
80b5133789 Fix compilation of qr.inverse() for column and full pivoting variants. 2016-10-06 09:55:50 +02:00
Benoit Steiner
78b569f685 Merged latest updates from trunk 2016-10-05 18:48:55 -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
Benoit Steiner
616a7a1912 Improved support for compiling CUDA code with clang as the host compiler 2016-10-03 17:09:33 -07:00
Gael Guennebaud
8b84801f7f bug #1310: workaround a compilation regression from 3.2 regarding triangular * homogeneous 2016-09-30 22:49:59 +02:00
Gael Guennebaud
33500050c3 bug #1308: fix compilation of some small products involving nullary-expressions. 2016-09-29 09:40:44 +02:00
Gael Guennebaud
779774f98c bug #1311: fix alignment logic in some cases of (scalar*small).lazyProduct(small) 2016-09-26 23:53:40 +02:00
Gael Guennebaud
48dfe98abd bug #1308: fix compilation of vector * rowvector::nullary. 2016-09-25 14:54:35 +02:00
Gael Guennebaud
86caba838d bug #1304: fix Projective * scaling and Projective *= scaling 2016-09-23 13:41:21 +02:00
Gael Guennebaud
66cbabafed Add a note regarding gcc bug #72867 2016-09-22 11:18:52 +02:00
Gael Guennebaud
aecc51a3e8 fix typo 2016-09-21 21:53:00 +02:00
Gael Guennebaud
1fc3a21ed0 Disable a failure test if extended double precision is in use (x87) 2016-09-21 20:09:07 +02:00
Gael Guennebaud
5269d11935 Fix compilation if ICC. 2016-09-21 17:08:51 +02:00
Gael Guennebaud
bf03820339 Silent warning. 2016-09-17 14:14:01 +02:00
Gael Guennebaud
de05a18fe0 fix compilation with boost::multiprec 2016-09-17 14:13:48 +02:00
Gael Guennebaud
4cc2c73e6a Fix alignement of statically allocated temporaries in gemv. 2016-09-17 12:52:27 +02:00
Gael Guennebaud
4adeababf9 Fix undeflow 2016-09-16 11:46:46 +02:00
Gael Guennebaud
471eac5399 bug #1195: move NumTraits::Div<>::Cost to internal::scalar_div_cost (with some specializations in arch/SSE and arch/AVX) 2016-09-08 08:36:27 +02:00
Gael Guennebaud
b046a3f87d Workaround MSVC instantiation faillure of has_*ary_operator at the level of triats<Ref>::match so that the has_*ary_operator are really properly instantiated throughout the compilation unit. 2016-09-06 15:47:04 +02:00
Gael Guennebaud
3cb914f332 bug #1266: remove CUDA guards on MatrixBase::<decomposition> definitions. (those used to break old nvcc versions that we propably don't care anymore) 2016-09-06 09:55:50 +02:00
Gael Guennebaud
dabc81751f Fix compilation when cuda_fp16.h does not exist. 2016-09-05 17:14:20 +02:00
Gael Guennebaud
e13071dd13 Workaround a weird msvc 2012 compilation error. 2016-09-05 15:50:41 +02:00
Gael Guennebaud
218c37beb4 bug #1286: automatically detect the available prototypes of functors passed to CwiseNullaryExpr such that functors have only to implement the operators that matters among: 
operator()()
 operator()(i)
 operator()(i,j)
Linear access is also automatically detected based on the availability of operator()(i,j).
 2016-08-31 15:45:25 +02:00
Gael Guennebaud
efe2c225c9 bug #1283: add regression unit test 2016-08-31 13:04:29 +02:00
Gael Guennebaud
8c48d42530 Fix 4x4 inverse with non-linear destination 2016-08-30 23:16:38 +02:00
Gael Guennebaud
c57317035a Fix unit test for 1x1 matrices 2016-08-30 10:20:23 +02:00
Gael Guennebaud
7e029d1d6e bug #1271: add SparseMatrix::coeffs() methods returning a 1D view of the non zero coefficients. 2016-08-29 12:06:37 +02:00
Gael Guennebaud
a93e354d92 Add some pre-allocation unit tests (not working yet) 2016-08-29 11:08:44 +02:00
Gael Guennebaud
6cd7b9ea6b Fix compilation with cuda 8 2016-08-29 11:06:08 +02:00
Gael Guennebaud
441b7eaab2 Add support for non trivial scalar factor in sparse selfadjoint * dense products, and enable +=/-= assignement for such products. 
This changeset also improves the performance by working on column of the result at once.
 2016-08-24 13:06:34 +02:00
Gael Guennebaud
8132a12625 bug #1268: detect faillure in LDLT and report them through info() 2016-08-23 23:15:55 +02:00
Gael Guennebaud
326320ec7b Fix compilation in non C++11 mode. 2016-08-23 19:28:57 +02:00
Gael Guennebaud
00b2666853 bug #645: patch from Tobias Wood implementing the extraction of eigenvectors in GeneralizedEigenSolver 2016-08-23 17:37:38 +02:00
Gael Guennebaud
504a4404f1 Optimize expression matching "d?=a-b*c" as "d?=a; d?=b*c;" 2016-08-23 16:52:22 +02:00
Gael Guennebaud
e47a8928ec Fix compilation in check_for_aliasing due to ambiguous specializations 2016-08-23 16:19:10 +02:00
Gael Guennebaud
82147cefff Fix possible overflow and biais in integer random generator 2016-08-23 13:25:31 +02:00