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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

[in] Register

The register to examine.

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

Nonzero, if the register NaT bit is zero.





Header file <intrin.h>

The IPF instruction generated is

This routine is only available as an intrinsic.

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