Changelog

0.20.4

  • Buffer adaptor default constructor #1524

0.20.3

  • Fix xbuffer adaptor #1523

0.20.2

  • Fixed broadcast linear assign #1493

  • Fixed do_stirdes_match #1497

  • Removed unused capture #1499

  • Upgraded to xtl 0.6.2 #1502

  • Added missing methods in xshared_expression #1503

  • Fixed iterator types of xcontainer #1504

  • Typo correction in external-structure.rst #1505

  • Added extension base to adaptors #1507

  • Fixed shared expression iterator methods #1509

  • Strided view fixes #1512

  • Improved range documentation #1515

  • Fixed ravel and flatten implementation #1511

  • Fixed xfixed_adaptor temporary assign #1516

  • Changed struct -> class in xiterator_adaptor #1513

  • Fxed argmax for expressions with strides 0 #1519

  • Add has_linear_assign to sdynamic_view #1520

0.20.1

  • Add a test for mimetype rendering and fix forward declaration #1490

  • Fix special case of view iteration #1491

0.20.0

Breaking changes

  • Removed xmasked_value and promote_type_t #1389

  • Removed deprecated type slice_vector #1459

  • Upgraded to xtl 0.6.1 #1468

  • Added keep_dims option to reducers #1474

  • do_strides_match now accept an addition base stride value #1479

Other changes

  • Add partition, argpartition and median #991

  • Fix tets on avx512 #1410

  • Implemented xcommon_tensor_t with tests #1412

  • Code reorganization #1416

  • reshape now accepts initializer_list parameter #1417

  • Improved documentation #1419

  • Fixed noexcept specifier #1418

  • view now accepts lvalue slices #1420

  • Removed warnings #1422

  • Added reshape member to xgenerator to make arange more flexible #1421

  • Add std::decay_t to shape_type in strided view #1425

  • Generic reshape for xgenerator #1426

  • Fix out of bounds accessing in xview::compute_strides #1437

  • Added quick reference section to documentation #1438

  • Improved getting started CMakeLists.txt #1440

  • Added periodic indices #1430

  • Added build section to narrative documentation #1442

  • Fixed linspace corner case #1443

  • Fixed type-o in documentation #1446

  • Added xt::xpad #1441

  • Added warning in resize documentation #1447

  • Added in_bounds method #1444

  • xstrided_view_base is now a CRTP base class #1453

  • Turned xfunctor_applier_base into a CRTP base class #1455

  • Removed out of bound access in data_offset #1456

  • Added xaccessible base class #1451

  • Refactored operator[] #1460

  • Splitted xaccessible #1461

  • Refactored size #1462

  • Implemented nanvar and nanstd with tests #1424

  • Removed warnings #1463

  • Added periodic and in_bounds method to xoptional_assembly_base #1464

  • Updated documentation according to last changes #1465

  • Fixed flatten_sort_result_type #1470

  • Fixed unique with expressions not defining temporary_type #1472

  • Fixed xstrided_view_base constructor #1473

  • Avoid signed integer overflow in integer printer #1475

  • Fixed xview::inner_backstrides_type #1480

  • Fixed compiler warnings #1481

  • slice_implementation_getter now forwards its lice argument #1486

  • linspace can now be reshaped #1488

0.19.4

  • Add missing include #1391

  • Fixes in xfunctor_view #1393

  • Add tests for xfunctor_view #1395

  • Add empty method to fixed_shape #1396

  • Add accessors to slice members #1401

  • Allow adaptors on shared pointers #1218

  • Fix eye with negative index #1406

  • Add documentation for shared pointer adaptor #1407

  • Add nanmean function #1408

0.19.3

  • Fix arange #1361.

  • Adaptors for C stack-allocated arrays #1363.

  • Add support for optionals in conditional_ternary #1365.

  • Add tests for ternary operator on xoptionals #1368.

  • Enable ternary operation for a mix of xoptional<value> and value #1370.

  • reduce now accepts a single reduction function #1371.

  • Implemented share method #1372.

  • Documentation of shared improved #1373.

  • make_lambda_xfunction more generic #1374.

  • minimum/maximum for xoptional #1378.

  • Added missing methods in uvector and svector #1379.

  • Clip xoptional_assembly #1380.

  • Improve gtest cmake #1382.

  • Implement ternary operator for scalars #1385.

  • Added missing at method in uvector and svector #1386.

  • Fixup binder environment #1387.

  • Fixed resize and swap of svector #1388.

0.19.2

  • Enable CI for C++17 #1324.

  • Fix assignment of masked views #1328.

  • Set CMAKE_CXX_STANDARD instead of CMAKE_CXX_FLAGS #1330.

  • Allow specifying traversal order to argmin and argmax #1331.

  • Update section on differences with NumPy #1336.

  • Fix accumulators for shapes containing 1 #1337.

  • Decouple XTENSOR_DEFAULT_LAYOUT and XTENSOR_DEFAULT_TRAVERSAL #1339.

  • Prevent embiguity with xsimd::reduce #1343.

  • Require xtl 0.5.3 #1346.

  • Use concepts instead of SFINAE #1347.

  • Document good practice for xtensor-based API design #1348.

  • Fix rich display of tensor expressions #1353.

  • Fix xview on fixed tensor #1354.

  • Fix issue with keep_slice in case of dynamic_view on view #1355.

  • Prevent installation of gtest artifacts #1357.

0.19.1

  • Add string specialization to lexical_cast #1281.

  • Added HDF5 reference for xtensor-io #1284.

  • Fixed view index remap issue #1288.

  • Fixed gcc 8.2 deleted functions #1289.

  • Fixed reducer for 0d input #1292.

  • Fixed check_element_index #1295.

  • Added comparison functions #1297.

  • Add some tests to ensure chrono works with xexpressions #1272.

  • Refactor functor_view #1276.

  • Documentation improved #1302.

  • Implementation of shift operators #1304.

  • Make functor adaptor stepper work for proxy specializations #1305.

  • Replaced auto& with auto&& in assign_to #1306.

  • Fix namespace in xview_utils.hpp #1308.

  • Introducing flatten_indices and unravel_indices #1300.

  • Default layout parameter for ravel #1311.

  • Fixed xvie_stepper #1317.

  • Fixed assignment of view on view #1314.

  • Documented indices #1318.

  • Fixed shift operators return type #1319.

0.19.0

Breaking changes

  • Upgraded to xtl 0.5 #1275.

Other changes

  • Removed type-o in docs, minor code style consistency update #1255.

  • Removed most of the warnings #1261.

  • Optional bitwise fixed #1263.

  • Prevent macro expansion in std::max #1265.

  • Update numpy.rst #1267.

  • Update getting_started.rst #1268.

  • keep and drop step_size fixed #1270.

  • Fixed typo in xadapt #1277.

  • Fixed typo #1278.

0.18.3

  • Exporting optional dependencies #1253.

  • 0-D HTML rendering #1252.

  • Include nlohmann_json in xio for mime bundle repr #1251.

  • Fixup xview scalar assignment #1250.

  • Implemented from_indices #1240.

  • xtensor_forward.hpp cleanup #1243.

  • default layout-type for unravel_from_strides and unravel_index #1239.

  • xfunction iterator fix #1241.

  • xstepper fixes #1237.

  • print_options io manipulators #1231.

  • Add syntactic sugar for reducer on single axis #1228.

  • Added view vs. adapt benchmark #1229.

  • added precisions to the installation instructions #1226.

  • removed data interface from dynamic view #1225.

  • add xio docs #1223.

  • Fixup xview assignment #1216.

  • documentation updated to be consistent with last changes #1214.

  • prevents macro expansion of std::max #1213.

  • Fix minor typos #1212.

  • Added missing assign operator in xstrided_view #1210.

  • argmax on axis with single element fixed #1209.

0.18.2

  • expression tag system fixed #1207.

  • optional extension for generator #1206.

  • optional extension for xview #1205.

  • optional extension for xstrided_view #1204.

  • optional extension for reducer #1203.

  • optional extension for xindex_view #1202.

  • optional extension for xfunctor_view #1201.

  • optional extension for broadcast #1198.

  • extension API and code cleanup #1197.

  • xscalar optional refactoring #1196.

  • Extension mechanism #1192.

  • Many small fixes #1191.

  • Slight refactoring in step_size logic #1188.

  • Fixup call of const overload in assembly storage #1187.

0.18.1

  • Fixup xio forward declaration #1185.

0.18.0

Breaking changes

  • Assign and trivial_broadcast refactoring #1150.

  • Moved array manipulation functions (transpose, ravel, flatten, trim_zeros, squeeze, expand_dims, split, atleast_Nd, atleast_1d, atleast_2d, atleast_3d, flip) from xstrided_view.hpp to xmanipulation.hpp #1153.

  • iterator API improved #1155.

  • Fixed where and nonzero function behavior to mimic the behavior from NumPy #1157.

  • xsimd and functor refactoring #1173.

New features

  • Implement rot90 #1153.

  • Implement argwhere and flatnonzero #1157.

  • Implemented xexpression_holder #1164.

Other changes

  • Warnings removed #1159.

  • Added missing include #1162.

  • Removed unused type alias in xmath/average #1163.

  • Slices improved #1168.

  • Fixed xdrop_slice #1181.

0.17.4

  • perfect forwarding in xoptional_function constructor #1101.

  • fix issue with base_simd #1103.

  • XTENSOR_ASSERT fixed on Windows #1104.

  • Implement xmasked_value #1032.

  • Added setdiff1d using stl interface #1109.

  • Added test case for setdiff1d #1110.

  • Added missing reference to diff in From numpy to xtensor section #1116.

  • Add amax and amin to the documentation #1121.

  • histogram and histogram_bin_edges implementation #1108.

  • Added numpy comparison for interp #1111.

  • Allow multiple return type reducer functions #1113.

  • Fixes average bug + adds Numpy based tests #1118.

  • Static xfunction cache for fixed sizes #1105.

  • Add negative reshaping axis #1120.

  • Updated xmasked_view using xmasked_value #1074.

  • Clean documentation for views #1131.

  • Build with xsimd on Windows fixed #1127.

  • Implement mime_bundle_repr for xmasked_view #1132.

  • Modify shuffle to use identical algorithms for any number of dimensions #1135.

  • Warnings removal on windows #1139.

  • Add permutation function to random #1141.

  • xfunction_iterator permutation #933.

  • Add bincount to xhistogram #1140.

  • Add contiguous iterable base class and remove layout param from storage iterator #1057.

  • Add storage_iterator to view and strided view #1045.

  • Removes data_element from xoptional #1137.

  • xtensor default constructor and scalar assign fixed #1148.

  • Add resize / reshape to xfixed_container #1147.

  • Iterable refactoring #1149.

  • inner_strides_type imported in xstrided_view #1151.

0.17.3

  • xslice fix #1099.

  • added missing static_layout in xmasked_view #1100.

0.17.2

  • Add experimental TBB support for parallelized multicore assign #948.

  • Add inline statement to all functions in xnpy #1097.

  • Fix strided assign for certain assignments #1095.

  • CMake, remove gtest warnings #1085.

  • Add conversion operators to slices #1093.

  • Add optimization to unchecked accessors when contiguous layout is known #1060.

  • Speedup assign by computing any layout on vectors #1063.

  • Skip resizing for fixed shapes #1072.

  • Add xsimd apply to xcomplex functors (conj, norm, arg) #1086.

  • Propagate contiguous layout through views #1039.

  • Fix C++17 ambiguity for GCC 7 #1081.

  • Correct shape type in argmin, fix svector growth #1079.

  • Add interp function to xmath #1071.

  • Fix valgrind warnings + memory leak in xadapt #1078.

  • Remove more clang warnings & errors on OS X #1077.

  • Add move constructor from xtensor <-> xarray #1051.

  • Add global support for negative axes in reducers/accumulators allow multiple axes in average #1010.

  • Fix reference usage in xio #1076.

  • Remove occurences of std::size_t and double #1073.

  • Add missing parantheses around min/max for MSVC #1061.

0.17.1

  • Add std namespace to size_t everywhere, remove std::copysign for MSVC #1053.

  • Fix (wrong) bracket warnings for older clang versions (e.g. clang 5 on OS X) #1050.

  • Fix strided view on view by using std::addressof #1049.

  • Add more adapt functions and shorthands #1043.

  • Improve CRTP base class detection #1041.

  • Fix rebind container ambiguous template for C++17 / GCC 8 regression #1038.

  • Fix functor return value #1035.

0.17.0

Breaking changes

  • Changed strides to std::ptrdiff_t #925.

  • Renamed count_nonzeros in count_nonzero #974.

  • homogenize xfixed constructors #970.

  • Improve random::choice #1011.

New features

  • add signed char to npy deserialization format #1017.

  • simd assignment now requires convertible types instead of same type #1000.

  • shared expression and automatic xclosure detection #992.

  • average function #987.

  • added simd support for complex #985.

  • argsort function #977.

  • propagate fixed shape #922.

  • added xdrop_slice #972.

  • added doc for xmasked_view #971.

  • added xmasked_view #969.

  • added dynamic_view #966.

  • added ability to use negative indices in keep slice #964.

  • added an easy way to create lambda expressions, square and cube #961.

  • noalias on rvalue #965.

Other changes

  • xshared_expression fixed #1025.

  • fix make_xshared #1024.

  • add tests to evaluate shared expressions #1019.

  • fix where on xview #1012.

  • basic usage replaced with getting started #1004.

  • avoided installation failure in absence of nlohmann_json #1001.

  • code and documentation clean up #998.

  • removed g++ “pedantic” compiler warnings #997.

  • added missing header in basic_usage.rst #996.

  • warning pass #990.

  • added missing include in xview #989.

  • added missing <map> include #983.

  • xislice refactoring #962.

  • added missing operators to noalias #932.

  • cmake fix for Intel compiler on Windows #951.

  • fixed xsimd abs deduction #946.

  • added islice example to view doc #940.

0.16.4

  • removed usage of std::transfomr in assign #868.

  • add strided assignment #901.

  • simd activated for conditional ternary functor #903.

  • xstrided_view split #905.

  • assigning an expression to a view throws if it has more dimensions #910.

  • faster random #913.

  • xoptional_assembly_base storage type #915.

  • new tests and warning pass #916.

  • norm immediate reducer #924.

  • add reshape_view #927.

  • fix immediate reducers with 0 strides #935.

0.16.3

  • simd on mathematical functions fixed #886.

  • fill method added to containers #887.

  • access with more arguments than dimensions #889.

  • unchecked method implemented #890.

  • fill method implemented in view #893.

  • documentation fixed and warnings removed #894.

  • negative slices and new range syntax #895.

  • xview_stepper with implicit xt::all bug fix #899.

0.16.2

  • Add include of xview.hpp in example #884.

  • Remove FS identifier #885.

0.16.1

  • Workaround for Visual Studio Bug #858.

  • Fixup example notebook #861.

  • Prevent expansion of min and max macros on Windows #863.

  • Renamed m_data to m_storage #864.

  • Fix regression with respect to random access stepping with views #865.

  • Remove use of CS, DS and ES qualifiers for Solaris builds #866.

  • Removal of precision type #870.

  • Make json tests optional, bump xtl/xsimd versions #871.

  • Add more benchmarks #876.

  • Forbid simd fixed #877.

  • Add more asserts #879.

  • Add missing batch_bool typedef #881.

  • simd_return_type hack removed #882.

  • Removed test guard and fixed dimension check in xscalar #883.

0.16.0

Breaking changes

  • data renamed in storage, raw_data renamed in data #792.

  • Added layout template parameter to xstrided_view #796.

  • Remove equality operator from stepper #824.

  • dynamic_view renamed in strided_view #832.

  • xtensorf renamed in xtensor_fixed #846.

New features

  • Added strided view selector #765.

  • Added count_nonzeros #781.

  • Added implicit conversion to scalar in xview #788.

  • Added tracking allocators to xutils.hpp #789.

  • xindexslice and shuffle function #804.

  • Allow xadapt with dynamic layout #816.

  • Added xtensorf initialization from C array #819.

  • Added policy to allocation tracking for throw option #820.

  • Free function empty for construction from shape #827.

  • Support for JSON serialization and deserialization of xtensor expressions #830.

  • Add trapz function #837.

  • Add diff and trapz(y, x) functions #841.

Other changes

  • Added fast path for specific assigns #767.

  • Renamed internal macros to prevent collisions #772.

  • dynamic_view unwrapping #775.

  • xreducer_stepper copy semantic fixed #785.

  • xfunction copy constructor fixed #787.

  • warnings removed #791.

  • xscalar_stepper fixed #802.

  • Fixup xadapt on const pointers #809.

  • Fix in owning buffer adaptors #810.

  • Macros fixup #812.

  • More fixes in xadapt #813.

  • Mute unused variable warning #815.

  • Remove comparison of steppers in assign loop #823.

  • Fix reverse iterators #825.

  • gcc-8 fix for template method calls #833.

  • refactor benchmarks for upcoming release #842.

  • flip now returns a view #843.

  • initial warning pass #850.

  • Fix warning on diff function #851.

  • xsimd assignment fixed #852.

0.15.9

  • missing layout method in xfixed #777.

  • fixed uninitialized backstrides #774.

  • update xtensor-blas in binder #773.

0.15.8

  • comparison operators for slices #770.

  • use default-assignable layout for strided views. #769.

0.15.7

  • nan related functions #718.

  • return types fixed in dynamic view helper #722.

  • xview on constant expressions #723.

  • added decays to make const value_type compile #727.

  • iterator for constant strided_view fixed #729.

  • strided_view on xfunction fixed #732.

  • Fixes in xstrided_view #736.

  • View semantic (broadcast on assign) fixed #742.

  • Compilation prevented when using ellipsis with xview #743.

  • Index of xiterator set to shape when reaching the end #744.

  • xscalar fixed #748.

  • Updated README and related projects #749.

  • Perfect forwarding in xfunction and views #750.

  • Missing include in xassign.hpp #752.

  • More related projects in the README #754.

  • Fixed stride computation for xtensorf #755.

  • Added tests for backstrides #758.

  • Clean up has_raw_data ins strided view #759.

  • Switch to ptrdiff_t for slices #760.

  • Fixed xview strides computation #762.

  • Additional methods in slices, required for xframe #764.

0.15.6

  • zeros, ones, full and empty_like functions #686.

  • squeeze view #687.

  • bitwise shift left and shift right #688.

  • ellipsis, unique and trim functions #689.

  • xview iterator benchmark #696.

  • optimize stepper increment #697.

  • minmax reducers #698.

  • where fix with SIMD #704.

  • additional doc for scalars and views #705.

  • mixed arithmetic with SIMD #713.

  • broadcast fixed #717.

0.15.5

  • assign functions optimized #650.

  • transposed view fixed #652.

  • exceptions refactoring #654.

  • performances improved #655.

  • view data accessor fixed #660.

  • new dynamic view using variant #656.

  • alignment added to fixed xtensor #659.

  • code cleanup #664.

  • xtensorf and new dynamic view documentation #667.

  • qualify namespace for compute_size #665.

  • make xio use dynamic_view instead of view #662.

  • transposed view on any expression #671.

  • docs typos and grammar plus formatting #676.

  • index view test assertion fixed #680.

  • flatten view #678.

  • handle the case of pointers to const element in xadapt #679.

  • use quotes in #include statements for xtl #681.

  • additional constructors for svector #682.

  • removed test_xsemantics.hpp from test CMakeLists #684.

0.15.4

  • fix gcc-7 error w.r.t. the use of assert #648.

0.15.3

  • add missing headers to cmake installation and tests #647.

0.15.2

  • xshape implementation #572.

  • xfixed container #586.

  • protected xcontainer::derived_cast #627.

  • const reference fix #632.

  • xgenerator access operators fixed #643.

  • contiguous layout optiimzation #645.

0.15.1

  • xarray_adaptor fixed #618.

  • xtensor_adaptor fixed #620.

  • fix in xreducer steppers #622.

  • documentation improved #621. #623. #625.

  • warnings removed #624.

0.15.0

Breaking changes

  • change reshape to resize, and add throwing reshape #598.

  • moved to modern cmake #611.

New features

  • unravel function #589.

  • random access iterators #596.

Other changes

  • upgraded to google/benchmark version 1.3.0 #583.

  • XTENSOR_ASSERT renamed into XTENSOR_TRY, new XTENSOR_ASSERT #603.

  • adapt fixed #604.

  • VC14 warnings removed #608.

  • xfunctor_iterator is now a random access iterator #609.

  • removed old-style-cast warnings #610.

0.14.1

New features

  • sort, argmin and argmax #549.

  • xscalar_expression_tag #582.

Other changes

  • accumulator improvements #570.

  • benchmark cmake fixed #571.

  • allocator_type added to container interface #573.

  • allow conda-forge as fallback channel #575.

  • arithmetic mixing optional assemblies and scalars fixed #578.

  • arithmetic mixing optional assemblies and optionals fixed #579.

  • operator== restricted to xtensor and xoptional expressions #580.

0.14.0

Breaking changes

  • xadapt renamed into adapt #563.

  • Naming consistency #565.

New features

  • add random::choice #547.

  • evaluation strategy and accumulators. #550.

  • modulus operator #556.

  • adapt: default overload for 1D arrays #560.

  • Move semantic on adapt #564.

Other changes

  • optional fixes to avoid ambiguous calls #541.

  • narrative documentation about xt::adapt #544.

  • xfunction refactoring #545.

  • SIMD acceleration for AVX fixed #557.

  • allocator fixes #558. #559.

  • return type of view::strides() fixed #568.

0.13.2

  • Support for complex version of isclose #512.

  • Fixup static layout in xstrided_view #536.

  • xexpression::operator[] now take support any type of sequence #537.

  • Fixing xinfo issues for Visual Studio. #529.

  • Fix const-correctness in xstrided_view. #526.

0.13.1

  • More general floating point type #518.

  • Do not require functor to be passed via rvalue reference #519.

  • Documentation improved #520.

  • Fix in xreducer #521.

0.13.0

Breaking changes

  • The API for xbuffer_adaptor has changed. The template parameter is the type of the buffer, not just the value type #482.

  • Change edge_items print option to edgeitems for better numpy consistency #489.

  • xtensor now depends on xtl version ~0.3.3 #508.

New features

  • Support for parsing the npy file format #465.

  • Creation of optional expressions from value and boolean expressions (optional assembly) #496.

  • Support for the explicit cast of expressions with different value types #491.

Other changes

  • Addition of broadcasting bitwise operators #459.

  • More efficient optional expression system #467.

  • Migration of benchmarks to the Google benchmark framework #473.

  • Container semantic and adaptor semantic merged #475.

  • Various fixes and improvements of the strided views #480. #481.

  • Assignment now performs basic type conversion #486.

  • Workaround for a compiler bug in Visual Studio 2017 #490.

  • MSVC 2017 workaround #492.

  • The size() method for containers now returns the total number of elements instead of the buffer size, which may differ when the smallest stride is greater than 1 #502.

  • The behavior of linspace with integral types has been made consistent with numpy #510.

0.12.1

  • Fix issue with slicing when using heterogeneous integral types #451.

0.12.0

Breaking changes

  • xtensor now depends on xtl version 0.2.x #421.

New features

  • xtensor has an optional dependency on xsimd for enabling simd acceleration #426.

  • All expressions have an additional safe access function (at) #420.

  • norm functions #440.

  • closure_pointer used in iterators returning temporaries so their operator-> can be correctly defined #446.

  • expressions tags added so xtensor expression system can be extended #447.

Other changes

  • Preconditions and exceptions #409.

  • isclose is now symmetric #411.

  • concepts added #414.

  • narrowing cast for mixed arithmetic #432.

  • is_xexpression concept fixed #439.

  • void_t implementation fixed for compilers affected by C++14 defect CWG 1558 #448.

0.11.3

  • Fixed bug in length-1 statically dimensioned tensor construction #431.

0.11.2

  • Fixup compilation issue with latest clang compiler. (missing constexpr keyword) #407.

0.11.1

  • Fixes some warnings in julia and python bindings

0.11.0

Breaking changes

  • xbegin / xend, xcbegin / xcend, xrbegin / xrend and xcrbegin / xcrend methods replaced with classical begin / end, cbegin / cend, rbegin / rend and crbegin / crend methods. Old begin / end methods and their variants have been removed. #370.

  • xview now uses a const stepper when its underlying expression is const. #385.

Other changes

  • xview copy semantic and move semantic fixed. #377.

  • xoptional can be implicitly constructed from a scalar. #382.

  • build with Emscripten fixed. #388.

  • STL version detection improved. #396.

  • Implicit conversion between signed and unsigned integers fixed. #397.