_logb
Visual Studio 2012
Extracts an exponential value of a double-precision floating-point argument.
double _logb( double x );
The _logb function extracts the exponential value of its double-precision floating-point argument x, as though x were represented with infinite range. If the argument x is denormalized, it is treated as if it were normalized.
|
Input |
SEH exception |
Matherr exception |
|---|---|---|
|
± QNAN,IND |
None |
_DOMAIN |
|
± 0 |
ZERODIVIDE |
_SING |
|
Routine |
Required header |
|---|---|
|
_logb |
<float.h> |
For more compatibility information, see Compatibility in the Introduction.
Libraries
All versions of the C run-time libraries.
Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.
