FP_NORMAL, FP_SUBNORMAL, FP_ZERO, FP_INFINITE, FP_NAN
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                    | Defined in header  <cmath> | ||
| #define FP_NORMAL    /*implementation defined*/ | (since C++11) | |
| #define FP_SUBNORMAL /*implementation defined*/ | (since C++11) | |
| #define FP_ZERO      /*implementation defined*/ | (since C++11) | |
| #define FP_INFINITE  /*implementation defined*/ | (since C++11) | |
| #define FP_NAN       /*implementation defined*/ | (since C++11) | |
The FP_NORMAL, FP_SUBNORMAL, FP_ZERO, FP_INFINITE, FP_NAN macros each represent a distinct category of floating-point numbers. They all expand to an integer constant expression.
| Constant | Explanation | 
| FP_NORMAL | indicates that the value is normal, i.e. not an infinity, subnormal, not-a-number or zero | 
| FP_SUBNORMAL | indicates that the value is subnormal | 
| FP_ZERO | indicates that the value is positive or negative zero | 
| FP_INFINITE | indicates that the value is not representable by the underlying type (positive or negative infinity) | 
| FP_NAN | indicates that the value is not-a-number (NaN) | 
[edit] Example
| This section is incomplete Reason: no example | 
[edit] See also
| (C++11) | categorizes the given floating point value (function) | 
| C documentation for FP_categories | |


