_ _CVTTQ Intrinsic

The _ _CVTTQ intrinsic has the following declaration:

__int64 __CVTTQ(double);

This intrinsic function returns the result of converting an IEEE double-precision value to an _ _int64 value.

This intrinsic can overflow, with errors handled according to the particular /QAieee switch specified. For more information, see the Floating-Point Exception-Handling Options topic in this chapter.