Program Listing for File human_readable.hpp

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#pragma once

#include <string>
#include <type_traits>
#include <typeinfo>

#include <navtk/tensors.hpp>

// To support GCC's oddball name mangling
#ifdef __GNUG__
#   include <cxxabi.h>
#   include <cstdlib>
#endif

namespace navtk {
namespace utils {

std::string repr(const Matrix& matrix, const std::string& decl);

std::string repr(const Matrix& matrix);

template <class E>
std::string repr(const xt::xexpression<E>& expr) {
    return repr(expr, "(expr)");
}

std::string diff(const std::string& before_name,
                 const std::string& after_name,
                 const Matrix& before,
                 const Matrix& after,
                 double rtol = 1e-05,
                 double atol = 1e-08);

std::string diff(const Matrix& before,
                 const Matrix& after,
                 double rtol = 1e-05,
                 double atol = 1e-08);


template <typename T>
std::string identify_type() {
#ifdef __GNUG__
    int err;
    typedef std::unique_ptr<char[], decltype(&std::free)> CStrPtr;
    CStrPtr buffer{__cxxabiv1::__cxa_demangle(typeid(T).name(), nullptr, 0, &err), &std::free};
    std::string out{err ? "<UNKNOWN TYPE>" : buffer.get()};
#else
    std::string out{typeid(T).name()};
#endif
    if (std::is_rvalue_reference<T>::value)
        return out + "&&";
    else if (std::is_reference<T>::value)
        return out + "&";
    return out;
}


}  // namespace utils
}  // namespace navtk