sympy2c 0.22.3

sympy2c is a sympy to c compiler including solving odes at c level.

sympy2c

sympy2c:

• takes symbolic expressions from sympy and creates a Python C extension offering functions to evaluate these.

• offers an ode solver in C which accepts equations specified as sympy expressions.

• offers sympy extenstion to specify integrals for numerical approximation in C++.

• offers sympy extenstion to specify 1D interpolation functions which can be evaluated in C++.

• offers fast ODE solvers in C++.

• Free software: MIT license

History

0.22.3 (2021-12-13)

• less output for new traces

0.22.2 (2021-12-10)

• fix missing files in package

• user portalocker to avoid race conditions when reading/writing trace files

0.22.1 (2021-12-10)

• fixed licenses

0.22.0 (2021-12-09)

• rename to sympy2c, upload to pypi.org, update package meta data

0.21.5 (2021-11-18)

• finaly fixed issue when switching time for combined odes is outside given time span.

0.21.4 (2021-11-15)

• delete new_traces entries after recompile.

0.21.3 (2021-11-15)

• fix issue when switching time for combined odes is outside given time span.

0.21.2 (2021-10-28)

• better error message when reading json file fails.

0.21.1 (2021-10-27)

• fix compilation flags for ubuntu 20.04.

• fix issue with file encodings of traces files.

0.21.0 (2021-09-24)

• faster sparse lu fallback solver.

• cache fast lsoda variant static library.

• check if splits for fast ode solvers are out of range.

0.20.1 (2021-09-14)

• Fix required cython version.

0.20.0 (2021-09-09)

• report lu solver call counts.

• fix issue with split and traces handling.

• improve compilation time using -f-no-var-tracking compiler flag.

• consider compiler flags in cache folder name.

0.19.1 (2021-07-09)

• remove C++17 dependency.

0.19.0 (2021-07-09)

• fix compilation issue with anaconda on mac.

• fast ode solver reports more detailed execution time info.

• cache folder names contains sympy and numpy version info.

• fix issue with interpolation functions.

0.18.0 (2021-04-29)

• official support for _ufunc versions of compiled functions.

• PythonFunction to compile pure Python function into wrapper.

0.17.0 (2021-04-23)

• more arguments for merge function in combined odes.

0.16.3 (2021-03-31)

• traces handling for OdeCombined.

0.16.2 (2021-03-31)

• fix issue with caching OdeCombined intermediate data.

• fix issue when switching odes.

0.16.1 (2021-03-25)

• fix issue when merging solutions of combined odes.

0.16.0 (2021-03-18)

• new feature: combined odes.

0.15.3 (2021-03-03)

• fix: more reliable server for gsl download, existing one was broken.

0.15.2 (2021-02-08)

• fix: restore Python 3.6 support.

0.15.1 (2021-01-27)

• fixed reordering of fast ode equations.

0.15.0 (2021-01-13)

• reordering of fast ode equations.

0.14.1 (2020-12-09)

• restore Python 3.6 support.

0.14.0 (2020-12-07)

• fixed bug in unique id computation in OdeFast.

• own approach for symbolic matrix inversion to gain speed.

0.13.1 (2020-11-23)

• fix traces handling.

0.13.0 (2020-11-20)

• faster compilation times based on schur-complement approach for solving linear systems.

• better handling of traces.

0.12.1 (2020-10-16)

• fix encoding issue when using subprocess module from standard library.

0.12.0 (2020-08-27)

• unify API of ode and fast ode solver.

• support to specify compilation flags.

• reduced size if sympy_to_c Python package.

0.11.0 (2020-08-19)

• reduce memory consumption of fast ode solver.

• support for bessel and 2f1 hyper geometric function.

• speed improvements in ode code related c functions.

• fix issue with handling rtol in fast ode solver.

• fix issue with memory handling / computation.

0.10.0 (2020-06-02)

• new parameter max_order for fast ode solver.

• rtol parameter for fast ode solver can be a vector now to use different settings for different components of the ode.

• compiled wrapper module name now includes unique id to support loading different wrappers in the same python interpreter.

0.9.0 (2020-03-31)

• Use constant ‘extrapolation’ on rhs of interpolation intervals. This is usefull if the ode solver tries to evaluate the rhs of the ODE beyond the last time point.

0.8.11 (2020-03-24)

• fixed bug related to included blas from release 0.8.10.

0.8.10 (2020-03-19)

• add attribute sympy_to_c_version to compiled module.

• include blas / lapack dependencies.

0.8.9 (2020-03-06)

• fixed pickling problems (commit 2215dfb).

• compiled module already has “default” integral parameters defined. Wrappers now can be used after import without setting integration parameters for integrals with id “default” (commit d544632).

• fixed issue with caching expression hashes (commit e73dd5d).

• reduced output (commit 25e4d62).

0.8.8 (2020-02-25)

• fixed issues with code creation for integrals.

0.8.7 (2020-02-18)

• don’t expose internal integrand functions to Python. Caused some issues in complex situations.

• print debug information about unique_id computations in case envrinment variable PRINTHASHES is set.

0.8.6 (2020-02-11)

• fixed pickling

• support for expressions including sympy.Abs.

0.8.5 (2020-02-04)

• fixed issues with sympy 1.4.X.

0.8.4 (2020-01-31)

• fixed issues with missing files in package.

0.8.3 (2020-01-30)

• fixed installation issues.

• internal improvements.

• smaller bug fixes.

0.8.2 (2019-12-10)

• added Module.unique_id.

• unique_id computations are much faster now.

• decide late what code to generate and compile.

• less but better output during compilation.

0.8.1 (2019-11-21)

• fixed broken caching of generated or compiled code.

• improved some messages from lsoda_modified when integration fails.

0.8.0 (2019-11-07)

• permutations -> traces + improved switchin of solvers.

• fixed “set_sec_factor” function. Old version did nothing.

• increased default value for “mxstep” in modified lsoda 500 to 50,000.

0.7.0 (2019-10-25)

• support integrals and interpolation functions in fast odes.

• disable compilation of fast ode wrappers on demand (needed in PyCosmo for faster startup).

• sec_factor is not hard coded anymore but can be configured.

• wrapper how has function to retrieve symbols used in an ode.

0.6.1 (2019-10-03)

• fixed broken ode solver in case time variable appears in right hand side of ode.

0.6.0 (2019-10-01)

• implemented fast ode solver.

• ode returns result now transposed.

0.5.3 (2019-07-03)

• enforce continous memory layout for vector arguments.

0.5.2 (2019-07-02)

• improved speed of code generation for larger ode systems as used in PyCosmo.

0.5.1 (2019-06-20)

• ode solver functions now have doc strings.

• fixed Python package by adding missing file.

0.5.0 (2019-06-14)

• ode solver now computes and uses jacobian matrix if wanted.

• include ERROR expression.

• handle None in globals as nan.

• added symbolic isnan function.

0.4.2 (2019-04-11)

• fixed issues after upgrade sympy to version 1.4.

• better error message when interpolation argument is out of range.

0.4.1 (2019-04-10)

• fixed pickling issues.

0.4.0 (2019-04-10)

• Fixed issue with aliasing vectors.

• compiled module now also returns list with strings of LHS symbols.

0.3.0 (2019-04-02)

• improved output when parsing Python code fails.

• add Min and Max expressions.

• better tests.

0.2.0 (2019-03-22)

• include ODE solver codes.

0.1.0 (2019-03-20)

• First release on PyPI.