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 tnat.nz.
This routine is only available as an intrinsic.