_fpclass (Windows CE 5.0)
Developing an Application > Microsoft C Run-time Library for Windows CE > Run-time Library Reference
Returns status word containing information on floating-point class.
int _fpclass( doublex);
Parameters
- x
Double-precision floating-point value.
Libraries
All versions of the C run-time libraries.
Return Values
_fpclass returns an integer value that indicates the floating-point class of its argument x.
The status word can have one of the following values, defined in Float.h.
| Value | Meaning |
|---|---|
| _FPCLASS_SNAN | Signaling NaN |
| _FPCLASS_QNAN | Quiet NaN |
| _FPCLASS_NINF | Negative infinity ( –INF) |
| _FPCLASS_NN | Negative normalized non-zero |
| _FPCLASS_ND | Negative denormalized |
| _FPCLASS_NZ | Negative zero ( – 0) |
| _FPCLASS_PZ | Positive 0 (+0) |
| _FPCLASS_PD | Positive denormalized |
| _FPCLASS_PN | Positive normalized non-zero |
| _FPCLASS_PINF | Positive infinity (+INF) |
Requirements
OS Versions: Windows CE 2.0 and later.
Header: stdlib.h.
Link Library: coredll.dll.
See Also
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