std::iswxdigit - cppreference.com (original) (raw)

| | | | | ---------------------------- | | | | int iswxdigit( wint_t ch ); | | |

Checks if the given wide character corresponds (if narrowed) to a hexadecimal numeric character, i.e. one of 0123456789abcdefABCDEF.

If the value of ch is neither representable as a wchar_t nor equal to the value of the macro WEOF, the behavior is undefined.

[edit] Parameters

[edit] Return value

Non-zero value if the wide character is a hexadecimal numeric character, zero otherwise.

[edit] Notes

std::iswdigit and std::iswxdigit are the only standard wide character classification functions that are not affected by the currently installed C locale.

[edit] Example

#include #include   int main() { std::cout << std::boolalpha << (std::iswxdigit(L'a') != 0) << ' ' << (std::iswxdigit(L'ä') != 0) << '\n'; }

Output:

[edit] See also