std::fpclassify

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Defined in header <cmath>

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int fpclassify( float arg );

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int fpclassify( double arg );

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int fpclassify( long double arg );

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Categorizes floating point value arg into the following categories: zero, subnormal, normal, infinite, NAN, or implementation-defined category.

Parameters

arg

-

floating point value

Return value

one of Template:cpp, Template:cpp, Template:cpp, Template:cpp, Template:cpp or implementation-defined type, specifying the category of arg.

See also

Template:cpp/numeric/math/dcl list isfiniteTemplate:cpp/numeric/math/dcl list isinfTemplate:cpp/numeric/math/dcl list isnanTemplate:cpp/numeric/math/dcl list isnormalTemplate:cpp/utility/types/dcl list numeric limits