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This article mainly introduces "what to do if acosh' is not a member of std' when there is an error in Qt5". In daily operation, I believe that many people have doubts about what to do when there is an error in Qt5, "acosh' is not a member of std'". The editor consulted all kinds of information and sorted out a simple and easy-to-use method of operation, hoping to help you answer the question that "Qt5 has an error." acosh' is not a member of std'. Next, please follow the editor to study!

Error: jsruntime/qv4mathobject.cpp:152:26: error: 'acosh' is not a member of' std'

Jsruntime/qv4mathobject.cpp:152:26: error: 'asinh' is not a member of' std'

Jsruntime/qv4mathobject.cpp:152:26: error: 'atanh' is not a member of' std'

……

The main problem is that the GCC version is too low and the support for the standard is incomplete. The solution is:

Open qt-everywhere-src-5.13.0/qtdeclarative/src/qml/jsruntime/qv4mathobject.cpp

Modify line 149 here:

# ifdef Q_OS_ANDROID / / incomplete std:-(

RETURN_RESULT (Encode (std::log (v + std::sqrt (v + 1) * std::sqrt (v-1)

# else

RETURN_RESULT (Encode (std::acosh (v)

# endif

Change to

RETURN_RESULT (Encode (std::log (v + std::sqrt (v + 1) * std::sqrt (v-1)

The whole file, and so on, all macros are taken

# ifdef Q_OS_ANDROID / / incomplete std:-(

And

# else

In between

Then, delete line 368:

# if! defined (_ _ ANDROID__) using std::log1p; # endif

At this point, the study of "what to do if acosh' is not a member of Qt5" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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