__isNat

[アーティクル]
09/17/2008

Microsoft Specific

Checks the Not a Thing (NaT) bit in the register specified, indicating that the register does not contain a valid number.

int isNat(
   int Register
);

Parameters

[in] Register
The register to examine.

Return Value

0, if the register's NaT bit is 1.

Nonzero, if the register NaT bit is zero.

Requirements

Intrinsic	Architecture
__isNat	IPF

Header file <intrin.h>

Remarks

The IPF instruction generated is tnat.nz.

This routine is only available as an intrinsic.

See Also

Concepts

Compiler Intrinsics