cmath.h compile error
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I don't understand that. It is a compile error in a core library file. I am not allowed to change it. Why would the calling function have anything to say?
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Why would the calling function have anything to say? Quote Selected Text
With very high probability the calling code is wrong (possibly making incorrect assumptions on the called function, it passes the wrong type). Maybe a previous implementation of the library had relaxed checks on calling code correctness.
"In testa che avete, Signor di Ceprano?" -- Rigoletto
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Use your development environment (VS or whatever) to check that there is a
#definefor each the following:NODISCARD_Check_return__In__CSTDAnd if you're using C instead of C++,noexceptcould be the problem. But I can't say, because I only write C++. EDIT: :doh: type 'int' unexpected suggests that the caller is passing anint, not afloat.Robust Services Core | Software Techniques for Lemmings | Articles
The fox knows many things, but the hedgehog knows one big thing.There are plenty of _Check_return_ statements that work. If there is something wrong with the calling function, I should get a compile error when compiling the cpp file where the function is called? This is an error from inside the include file cmath.h. Three errors reported, underscore is the highlighted error indication. Line 210 _NODISCARD _Check_return_ inline float round(_In_ float _Xx) noexcept /* strengthened */ { return _CSTD roundf(_Xx); } Line 446 _NODISCARD _Check_return_ inline long double round(_In_ long double _Xx) noexcept /* strengthened */ { return _CSTD roundl(_Xx); } Line 663 _GENERIC_MATH1(round) It seems I am not allowed to alter any include file, so I can not experiment with commenting the functions out, etc.
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I am compiling some old legacy code with MFC. For this line in cmath.h I get an error:
NODISCARD _Check_return_ inline float round(_In_ float _Xx) noexcept /* strengthened */ {
return _CSTD roundf(_Xx);
}With first round statement highlighted I get this message: C2062 type'int' unexpected
I would be inclined to look at the preprocessor output to see what all of those non-standard "types" are.
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There are plenty of _Check_return_ statements that work. If there is something wrong with the calling function, I should get a compile error when compiling the cpp file where the function is called? This is an error from inside the include file cmath.h. Three errors reported, underscore is the highlighted error indication. Line 210 _NODISCARD _Check_return_ inline float round(_In_ float _Xx) noexcept /* strengthened */ { return _CSTD roundf(_Xx); } Line 446 _NODISCARD _Check_return_ inline long double round(_In_ long double _Xx) noexcept /* strengthened */ { return _CSTD roundl(_Xx); } Line 663 _GENERIC_MATH1(round) It seems I am not allowed to alter any include file, so I can not experiment with commenting the functions out, etc.
Check if
roundis also defined somewhere else, and check that_GENERIC_MATH1is actually defined. Beyond that, I don't know.Robust Services Core | Software Techniques for Lemmings | Articles
The fox knows many things, but the hedgehog knows one big thing. -
I am compiling some old legacy code with MFC. For this line in cmath.h I get an error:
NODISCARD _Check_return_ inline float round(_In_ float _Xx) noexcept /* strengthened */ {
return _CSTD roundf(_Xx);
}With first round statement highlighted I get this message: C2062 type'int' unexpected
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I am compiling some old legacy code with MFC. For this line in cmath.h I get an error:
NODISCARD _Check_return_ inline float round(_In_ float _Xx) noexcept /* strengthened */ {
return _CSTD roundf(_Xx);
}With first round statement highlighted I get this message: C2062 type'int' unexpected
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I am compiling some old legacy code with MFC. For this line in cmath.h I get an error:
NODISCARD _Check_return_ inline float round(_In_ float _Xx) noexcept /* strengthened */ {
return _CSTD roundf(_Xx);
}With first round statement highlighted I get this message: C2062 type'int' unexpected
Your compiler should have an option to send the output of the preprocessor into a file. Using Visual C/C++, this option is /P, and the output file has an extension of .i . Run your code through this, and look for cmath.h in the .i file. Then look for the definition of the round() function. You will see what the compiler thinks the round() function is, and your problem should then be obvious. :)
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows. -- 6079 Smith W.
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I am compiling some old legacy code with MFC. For this line in cmath.h I get an error:
NODISCARD _Check_return_ inline float round(_In_ float _Xx) noexcept /* strengthened */ {
return _CSTD roundf(_Xx);
}With first round statement highlighted I get this message: C2062 type'int' unexpected
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Hi and thanks for all help. When I put
#include
right under #include stdafx.h it compiled. Don't ask me exactly why. It may be a conflict between math.h and cmath that was solved in this way. Regards, Haakon S.
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So... You said that your compiler gave you an error in cmath.h
Haakon S. wrote:
For this line in cmath.h I get an error:
Which you solved... "by including cmath.h" :confused:
I honestly don't know what is going on. Some files had #include . Removing this did't help. It reported error in cmath anyway. When googling "cmath error c2062" I see that others have had the same problem. Anyway, it seems that I have found the solution.
