Портирование программы использующую std::complex и boost::multiprecision::number на Emscripten

@radiofan · Регистрация: 18.04.2018

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Здравствуйте, столкнулся с проблемой. Реализация Emscripten <complex> отличается от GNU <complex>. Emscripten <complex> содержит множество проверок в реализациях математических операций (https://github.com/emscripten-... #L624-L658). Эти функции вызывают свои std аналоги (https://github.com/emscripten-... #L595-L598). boost::multiprecision имеет свои реализации этих функций, но их реализация не добавляется в std.

Существует ли возможность добавить эти функции в std так, чтобы <cmath> их видел?

Программа (с попыткой добавить функции в std):

C++
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#include <stdlib.h>
#include <iostream>
 
#include <boost/multiprecision/cpp_dec_float.hpp>
 
using Number = boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16U, std::int16_t>>;
 
namespace std{
    constexpr bool isnan(const Number& __x){
        return boost::multiprecision::isnan(__x);
    }
    constexpr bool isinf(const Number& __x){
        return boost::multiprecision::isinf(__x);
    }
}
 
#include <complex>
using ComplexType = std::complex<Number>;
 
 
int main(int, char*[]){
    Number a{ "1.2" };
    Number b{ "5.56" };
    Number c{ 1.25 };
    Number d{ -5 };
 
    ComplexType c_a{5};
    ComplexType c_b{5, -6};
    ComplexType c_c{-2.5, c};
 
    std::cout   << "c_a + c_c = " << (c_a + c_c) << std::endl
                 << "c_b - c_c = " << (c_b - c_c) << std::endl
                 << "c_b * c_c = " << (c_b * c_c) << std::endl
                 << "c_c / c_b = " << (c_c / c_b) << std::endl
                 << "abs(c_c) = " << std::abs(c_c) << std::endl
                 << "exp(c_b) = " << std::exp(c_b) << std::endl;
//;
    return 0;
}

Добавлено через 2 минуты
Ошибка компиляции:

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clang -cc1 version 19.0.0git based upon LLVM 19.0.0git default target x86_64-unknown-linux-gnu
ignoring nonexistent directory "/home/user/emsdk/upstream/emscripten/cache/sysroot/include/wasm32-emscripten/c++/v1"
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#include "..." search starts here:
#include <...> search starts here:
 /home/user/examples/multiprecision/build/Debug
 /home/user/examples/multiprecision/math-precision/include
 /home/user/examples/multiprecision/zerobasic/include
 /home/user/emsdk/upstream/emscripten/cache/sysroot/include/SDL2
 /home/user/.conan2/p/boost0e71b73da677f/p/include
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In file included from /home/user/examples/multiprecision/main.cpp:2:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/iostream:43:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/ios:223:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__locale:16:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__mutex/once_flag.h:21:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/tuple:272:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/compare:145:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__compare/compare_partial_order_fallback.h:13:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__compare/partial_order.h:14:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__compare/weak_order.h:14:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__compare/strong_order.h:20:
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/cmath:597:10: error: no matching function for call to 'isinf'
  597 |   return std::isinf(__lcpp_x);
      |          ^~~~~~~~~~
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/complex:636:26: note: in instantiation of function template specialization 'std::__constexpr_isinf<boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>, 0>' requested here
  636 |     bool __z_inf  = std::__constexpr_isinf(__a) || std::__constexpr_isinf(__b);
      |                          ^
/home/user/examples/multiprecision/main.cpp:35:32: note: in instantiation of function template specialization 'std::operator*<boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>>' requested here
   35 |                                  << "c_b * c_c = " << (c_b * c_c) << std::endl
      |                                                            ^
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__math/traits.h:71:87: note: candidate function not viable: no known conversion from 'boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>' to 'float' for 1st argument
   71 | _LIBCPP_NODISCARD_EXT inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI bool isinf(float __x) _NOEXCEPT {
      |                                                                                       ^     ~~~~~~~~~
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__math/traits.h:76:1: note: candidate function not viable: no known conversion from 'boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>' to 'double' for 1st argument
   76 | isinf(double __x) _NOEXCEPT {
      | ^     ~~~~~~~~~~
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__math/traits.h:80:87: note: candidate function not viable: no known conversion from 'boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>' to 'long double' for 1st argument
   80 | _LIBCPP_NODISCARD_EXT inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI bool isinf(long double __x) _NOEXCEPT {
      |                                                                                       ^     ~~~~~~~~~~~~~~~
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__math/traits.h:61:80: note: candidate template ignored: requirement 'is_arithmetic<boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short, void>, boost::multiprecision::et_on>>::value' was not satisfied [with _A1 = boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>]
   61 | _LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI bool isinf(_A1 __x) _NOEXCEPT {
      |                                                                                ^
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__math/traits.h:66:80: note: candidate template ignored: requirement 'is_arithmetic<boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short, void>, boost::multiprecision::et_on>>::value' was not satisfied [with _A1 = boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>]
   66 | _LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI bool isinf(_A1) _NOEXCEPT {
      |                                                                                ^
In file included from /home/user/examples/multiprecision/main.cpp:2:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/iostream:43:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/ios:223:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__locale:16:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__mutex/once_flag.h:21:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/tuple:272:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/compare:145:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__compare/compare_partial_order_fallback.h:13:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__compare/partial_order.h:14:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__compare/weak_order.h:14:
In file included from /home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__compare/strong_order.h:20:
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/cmath:583:10: error: no matching function for call to 'isnan'
  583 |   return std::isnan(__lcpp_x);
      |          ^~~~~~~~~~
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/complex:639:28: note: in instantiation of function template specialization 'std::__constexpr_isnan<boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>, 0>' requested here
  639 |         !__z_inf && ((std::__constexpr_isnan(__a) && std::__constexpr_isnan(__b)) ||
      |                            ^
/home/user/examples/multiprecision/main.cpp:35:32: note: in instantiation of function template specialization 'std::operator*<boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>>' requested here
   35 |                                  << "c_b * c_c = " << (c_b * c_c) << std::endl
      |                                                            ^
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__math/traits.h:98:87: note: candidate function not viable: no known conversion from 'boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>' to 'float' for 1st argument
   98 | _LIBCPP_NODISCARD_EXT inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI bool isnan(float __x) _NOEXCEPT {
      |                                                                                       ^     ~~~~~~~~~
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__math/traits.h:103:1: note: candidate function not viable: no known conversion from 'boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>' to 'double' for 1st argument
  103 | isnan(double __x) _NOEXCEPT {
      | ^     ~~~~~~~~~~
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__math/traits.h:107:87: note: candidate function not viable: no known conversion from 'boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>' to 'long double' for 1st argument
  107 | _LIBCPP_NODISCARD_EXT inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI bool isnan(long double __x) _NOEXCEPT {
      |                                                                                       ^     ~~~~~~~~~~~~~~~
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__math/traits.h:88:80: note: candidate template ignored: requirement 'is_floating_point<boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short, void>, boost::multiprecision::et_on>>::value' was not satisfied [with _A1 = boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>]
   88 | _LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI bool isnan(_A1 __x) _NOEXCEPT {
      |                                                                                ^
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/__math/traits.h:93:80: note: candidate template ignored: requirement 'is_integral<boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short, void>, boost::multiprecision::et_on>>::value' was not satisfied [with _A1 = boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>]
   93 | _LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI bool isnan(_A1) _NOEXCEPT {
      |                                                                                ^
In file included from /home/user/examples/multiprecision/main.cpp:5:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/multiprecision/cpp_dec_float.hpp:33:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/multiprecision/number.hpp:12:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/multiprecision/detail/generic_interconvert.hpp:12:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/multiprecision/detail/default_ops.hpp:15:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/multiprecision/detail/fpclassify.hpp:16:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/math/special_functions/fpclassify.hpp:18:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/math/special_functions/math_fwd.hpp:27:
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/complex:669:13: error: no matching function for call to '__constexpr_copysign'
  669 |       __a = std::__constexpr_copysign(std::__constexpr_isinf(__a) ? _Tp(1) : _Tp(0), __a);
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~
/home/user/examples/multiprecision/main.cpp:35:32: note: in instantiation of function template specialization 'std::operator*<boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>>' requested here
   35 |                                  << "c_b * c_c = " << (c_b * c_c) << std::endl
      |                                                            ^
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/cmath:614:54: note: candidate function not viable: no known conversion from 'boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>' to 'float' for 1st argument
  614 | _LIBCPP_CONSTEXPR inline _LIBCPP_HIDE_FROM_ABI float __constexpr_copysign(float __x, float __y) _NOEXCEPT {
      |                                                      ^                    ~~~~~~~~~
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/cmath:618:55: note: candidate function not viable: no known conversion from 'boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>' to 'double' for 1st argument
  618 | _LIBCPP_CONSTEXPR inline _LIBCPP_HIDE_FROM_ABI double __constexpr_copysign(double __x, double __y) _NOEXCEPT {
      |                                                       ^                    ~~~~~~~~~~
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/cmath:623:1: note: candidate function not viable: no known conversion from 'boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>' to 'long double' for 1st argument
  623 | __constexpr_copysign(long double __x, long double __y) _NOEXCEPT {
      | ^                    ~~~~~~~~~~~~~~~
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/cmath:631:1: note: candidate template ignored: requirement 'std::is_arithmetic<boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short, void>, boost::multiprecision::et_on>>::value' was not satisfied [with _A1 = boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>, _A2 = boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>]
  631 | __constexpr_copysign(_A1 __x, _A2 __y) _NOEXCEPT {
      | ^
In file included from /home/user/examples/multiprecision/main.cpp:5:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/multiprecision/cpp_dec_float.hpp:33:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/multiprecision/number.hpp:12:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/multiprecision/detail/generic_interconvert.hpp:12:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/multiprecision/detail/default_ops.hpp:15:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/multiprecision/detail/fpclassify.hpp:16:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/math/special_functions/fpclassify.hpp:18:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/math/special_functions/math_fwd.hpp:27:
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/complex:670:13: error: no matching function for call to '__constexpr_copysign'
  670 |       __b = std::__constexpr_copysign(std::__constexpr_isinf(__b) ? _Tp(1) : _Tp(0), __b);
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/cmath:614:54: note: candidate function not viable: no known conversion from 'boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>' to 'float' for 1st argument
  614 | _LIBCPP_CONSTEXPR inline _LIBCPP_HIDE_FROM_ABI float __constexpr_copysign(float __x, float __y) _NOEXCEPT {
      |                                                      ^                    ~~~~~~~~~
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/cmath:618:55: note: candidate function not viable: no known conversion from 'boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>' to 'double' for 1st argument
  618 | _LIBCPP_CONSTEXPR inline _LIBCPP_HIDE_FROM_ABI double __constexpr_copysign(double __x, double __y) _NOEXCEPT {
      |                                                       ^                    ~~~~~~~~~~
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/cmath:623:1: note: candidate function not viable: no known conversion from 'boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>' to 'long double' for 1st argument
  623 | __constexpr_copysign(long double __x, long double __y) _NOEXCEPT {
      | ^                    ~~~~~~~~~~~~~~~
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/cmath:631:1: note: candidate template ignored: requirement 'std::is_arithmetic<boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short, void>, boost::multiprecision::et_on>>::value' was not satisfied [with _A1 = boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>, _A2 = boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>]
  631 | __constexpr_copysign(_A1 __x, _A2 __y) _NOEXCEPT {
      | ^
In file included from /home/user/examples/multiprecision/main.cpp:5:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/multiprecision/cpp_dec_float.hpp:33:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/multiprecision/number.hpp:12:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/multiprecision/detail/generic_interconvert.hpp:12:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/multiprecision/detail/default_ops.hpp:15:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/multiprecision/detail/fpclassify.hpp:16:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/math/special_functions/fpclassify.hpp:18:
In file included from /home/user/.conan2/p/boost0e71b73da677f/p/include/boost/math/special_functions/math_fwd.hpp:27:
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/complex:672:15: error: no matching function for call to '__constexpr_copysign'
  672 |         __c = std::__constexpr_copysign(_Tp(0), __c);
      |               ^~~~~~~~~~~~~~~~~~~~~~~~~
/home/user/emsdk/upstream/emscripten/cache/sysroot/include/c++/v1/cmath:614:54: note: candidate function not viable: no known conversion from 'boost::multiprecision::number<boost::multiprecision::backends::cpp_dec_float<16, short>>' to 'float' for 1st argument
  614 | _LIBCPP_CONSTEXPR inline _LIBCPP_HIDE_FROM_ABI float __constexpr_copysign(float __x, float __y) _NOEXCEPT {
      |                                                      ^                    ~~~~~~~~~

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