FP_NORMAL, FP_SUBNORMAL, FP_ZERO, FP_INFINITE, FP_NAN
From cppreference.com
| Defined in header <math.h>
|
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| #define FP_NORMAL /*implementation defined*/ |
(since C99) | |
| #define FP_SUBNORMAL /*implementation defined*/ |
(since C99) | |
| #define FP_ZERO /*implementation defined*/ |
(since C99) | |
| #define FP_INFINITE /*implementation defined*/ |
(since C99) | |
| #define FP_NAN /*implementation defined*/ |
(since C99) | |
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] See also
| (C99) |
categorizes the given floating point value (function) |
| C++ documentation for FP_categories
| |
