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fpclassify

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Defined in header <math.h>
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#define fpclassify(arg) /* implementation defined */
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<td class="t-dcl-nopad"> </td> <td > (since C99) </td> </tr> Template:ddcl list end

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

Parameters

arg - floating point value

Return value

One of FP_INFINITE, FP_NAN, FP_NORMAL, FP_SUBNORMAL, FP_ZERO or implementation-defined type, specifying the category of arg.

See also

Template:c/numeric/math/dcl list isfiniteTemplate:c/numeric/math/dcl list isinfTemplate:c/numeric/math/dcl list isnanTemplate:c/numeric/math/dcl list isnormal
C++ documentation for fpclassify