intrinsic for mulx

Hello,

I read the white paper "New Instructions Support Large Integer Arithmetic". I read that the umul128  intrinsic compiler will provide the instruction mulx to perform the full product of two integers.

But I can't find any reference in the compiler C++ (2015.1.108) documentation.

Is the intrinsic available for mulx using the intel c++ compiler ?

Or how I can replace it with an asm instruction ? An example is welcome for the multiplication of two 64-bits integers.

Mickaël