Handling vector type of four fp8 values Arithmetic Functions

Accelerated Computing GPU-Accelerated Libraries
1

From here, I can find about Half2 Arithmetic Functions, such as __host__ __device__ __half2__hsub2(const __half2 a, const __half2 b).
But in FP8 Intrinsics, I can’t find the function about fp8 vector subtraction calculation.
Is there such a function?