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Asked: 2026-05-11T09:35:04+00:00

Is this guaranteed to be always true: std::numeric_limits<int>::max() == INT_MAX What does C++ standard

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  1. Is this guaranteed to be always true:

    std::numeric_limits<int>::max() == INT_MAX

    What does C++ standard say about it? I could not find any reference in the standard that would explicitly state this, but I keep reading that those should be equivalent.

  2. What about C99 types that are not in C++98 standard for compilers that implement both C99 (at least long long part) and C++98? I am not sure whether there is any guarantee that this always holds true:

    std::numeric_limits<unsigned long long>::max() == ULLONG_MAX

    Is this a reasonable assumption?

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  1. My copy of the C++ 2003 standard says that the numeric_limits<>::max() and min() templates will return values:

    Equivalent to CHAR_MIN, SHRT_MIN, FLT_MIN, DBL_MIN, etc.

    Equivalent to CHAR_MAX, SHRT_MAX, FLT_MAX, DBL_MAX, etc

    However, those are in footnotes. ISO/IEC Directives Part 3: ‘[Footnotes] shall not contain requirements.’ Though footnotes to tables or figures may be requirements.

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