Function core::arch::x86_64::_t1mskc_u64

pub unsafe fn _t1mskc_u64(x: u64) -> u64

This is supported on non-x86 and target feature tbm and x86-64 only.

Clears all bits below the least significant zero of x and sets all other bits.

If the least significant bit of x is 0, it sets all bits.