Boost.Math as a Standalone

[NAThompson]

Just a discussion point: What would be the effort to get a boost.math standalone working? Obviously we'd need to bring in multiprecision, mp11, and config. Is there anything else?

How much effort would it be?

[jzmaddock]

Quite a bit I suspect. Multiprecision isn't required. Config, MPL, and lexical_cast certainly. Maybe others, not sure.

[ax3l]

Just as a note in case it helps, Boost.MP11 supports usage as standalone CMake project which is a wonderful feature. Maybe we can copy the solution from there already, they depend on config, assert and core.

Discussion: https://github.com/boostorg/mp11/pull/19 Implementation: https://github.com/boostorg/mp11/blob/develop/CMakeLists.txt

[ax3l]

Here is a grep of all includes in current develop for includes that are not boost/math:

algorithm array atomic boost/algorithm/string/trim.hpp boost/archive/codecvt_null.hpp boost/archive/text_iarchive.hpp boost/archive/text_oarchive.hpp boost/archive/text_wiarchive.hpp boost/archive/text_woarchive.hpp boost/archive/xml_iarchive.hpp boost/archive/xml_oarchive.hpp boost/array.hpp boost/assert.hpp boost/atomic.hpp boost/bind.hpp boost/bind/placeholders.hpp boost/chrono.hpp boost/concept_archetype.hpp boost/concept_check.hpp boost/concepts/std_real_concept.hpp boost/config/header_deprecated.hpp boost/config.hpp boost/config/no_tr1/cmath.hpp boost/config/no_tr1/complex.hpp boost/core/demangle.hpp boost/core/enable_if.hpp boost/core/lightweight_test.hpp boost/cstdfloat.hpp boost/cstdint.hpp boost/cstdlib.hpp boost/current_function.hpp boost/detail/endian.hpp boost/detail/fenv.hpp boost/detail/lightweight_mutex.hpp boost/detail/workaround.hpp boost/exception/exception.hpp boost/filesystem/fstream.hpp boost/filesystem.hpp boost/fixed_point/fixed_point.hpp boost/format.hpp boost/function/function1.hpp boost/function.hpp boost/fusion/include/std_pair.hpp boost/fusion/include/tuple.hpp boost/integer/common_factor_ct.hpp boost/integer/common_factor_rt.hpp boost/interprocess/sync/named_mutex.hpp boost/interprocess/sync/scoped_lock.hpp boost/iostreams/stream.hpp boost/iostreams/tee.hpp boost/lambda/lambda.hpp boost/lexical_cast.hpp boost/limits.hpp boost/mp11/function.hpp boost/mp11/integer_sequence.hpp boost/mp11/integral.hpp boost/mp11/list.hpp boost/mp11/tuple.hpp boost/mp11/utility.hpp boost/mpl/and.hpp boost/mpl/at.hpp boost/mpl/bool.hpp boost/mpl/comparison.hpp boost/mpl/contains.hpp boost/mpl/divides.hpp boost/mpl/equal_to.hpp boost/mpl/find_if.hpp boost/mpl/greater_equal.hpp boost/mpl/greater.hpp boost/mpl/has_xxx.hpp boost/mpl/if.hpp boost/mpl/int.hpp boost/mpl/joint_view.hpp boost/mpl/less_equal.hpp boost/mpl/list.hpp boost/mpl/not.hpp boost/mpl/or.hpp boost/mpl/plus.hpp boost/mpl/push_back.hpp boost/mpl/remove_if.hpp boost/mpl/size.hpp boost/mpl/vector.hpp boost/multiprecision/complex128.hpp boost/multiprecision/cpp_bin_float.hpp boost/multiprecision/cpp_bin_float/io.hpp boost/multiprecision/cpp_complex.hpp boost/multiprecision/cpp_dec_float.hpp boost/multiprecision/cpp_int.hpp boost/multiprecision/debug_adaptor.hpp boost/multiprecision/float128.hpp boost/multiprecision/integer.hpp boost/multiprecision/mpc.hpp boost/multiprecision/mpfi.hpp boost/multiprecision/mpfr.hpp boost/numeric/ublas/io.hpp boost/numeric/ublas/lu.hpp boost/numeric/ublas/matrix.hpp boost/numeric/ublas/operation.hpp boost/numeric/ublas/vector.hpp boost/predef/architecture/x86.h boost/predef/other/endian.h boost/preprocessor/stringize.hpp boost/program_options.hpp boost/random.hpp boost/random/mersenne_twister.hpp boost/random/uniform_int.hpp boost/random/uniform_real_distribution.hpp boost/range/adaptors.hpp boost/range/begin.hpp boost/range/end.hpp boost/range.hpp boost/range/irange.hpp boost/range/size.hpp boost/regex.hpp boost/scoped_array.hpp boost/serialization/nvp.hpp boost/spirit/include/classic_actor.hpp boost/spirit/include/classic_core.hpp boost/static_assert.hpp boost/svg_plot/show_2d_settings.hpp boost/svg_plot/svg_2d_plot.hpp boost/system/error_code.hpp boost/test/floating_point_comparison.hpp boost/test/included/prg_exec_monitor.hpp boost/test/included/unit_test.hpp boost/test/results_collector.hpp boost/test/test_case_template.hpp boost/test/test_tools.hpp boost/test/tools/floating_point_comparison.hpp boost/test/unit_test.hpp boost/test/unit_test_log.hpp boost/throw_exception.hpp boost/timer/timer.hpp boost/tuple/tuple_comparison.hpp boost/tuple/tuple.hpp boost/type_index.hpp boost/typeof/typeof.hpp boost/type_traits/conditional.hpp boost/type_traits/has_pre_increment.hpp boost/type_traits.hpp boost/type_traits/integral_constant.hpp boost/type_traits/is_class.hpp boost/type_traits/is_complex.hpp boost/type_traits/is_constructible.hpp boost/type_traits/is_convertible.hpp boost/type_traits/is_detected.hpp boost/type_traits/is_floating_point.hpp boost/type_traits/is_fundamental.hpp boost/type_traits/is_integral.hpp boost/type_traits/is_pod.hpp boost/type_traits/is_same.hpp boost/type_traits/is_same.hpp boost/type_traits/remove_cv.hpp boost/utility/declval.hpp boost/utility/enable_if.hpp boost/utility/identity_type.hpp boost/version.hpp cctype cerrno cfloat chrono climits cmath complex cstddef cstring e_float/e_float.h emmintrin.h exception fftw3.h float.h fstream functional functions/functions.h future gmpfrxx.h initializer_list iomanip ios iosfwd iostream istream iterator limits limits.h locale map math.h memory mpreal.h mutex NTL/RR.h numeric ostream quadmath.h random set sstream stddef.h stdexcept stdlib.h string thread tuple typeinfo type_traits utility valarray vector

So in summary:

• boost/algorithm/string/trim.hpp
• boost/archive/
• boost/bind/
• boost/concepts/std_real_concept.hpp
• boost/config/
• boost/core/
• boost/filesystem/
• boost/function/
• boost/fusion/
• boost/integer/
• boost/interprocess/
• boost/iostreams/
• boost/lambda/
• both boost/mp11/ and boost/mpl
• boost/multiprecision/
• boost/numeric/
• boost/predef/ and boost/preprocessor/
• boost/program_options.hpp
• boost/random/
• boost/range/
• boost/regex.hpp
• boost/serialization/
• boost/spirit/
• boost/svg_plot/
• boost/system/
• boost/test/
• boost/timer/
• boost/tuple/
• boost/typeof/
• boost/type_traits/
• boost/utility/

[NAThompson]

Looks pretty daunting to me. In other news, boost is really useful, so it uses itself extensively!

@ax3l : If you want all why don't you just own your boost dependency and start putting all the generic numerical utilities you need for your PIC code into boost.math? They are probably things I've already thought about adding at some point . . .

[ax3l]

We actually just want bessel functions, two integrators (de_tanh_sinh, gauss_kronrod) and a root finder (bracket_solve) to calculate a little lookup table beforehand ;-)

No seriously, that's too heavy to embrace for the compilers we face daily (EDG frontends such as NVCC doing fancy code splitting, clang -x cuda, Cray, XL, Intel, PGI, ...). We were looking for something lightweight and small, both build-system wise as well as transitive dependencies.