Function directx_math::XMVectorSetByIndex

pub fn XMVectorSetByIndex(V: XMVECTOR, f: f32, i: usize) -> XMVECTOR

Use a floating-point object to set the value of one of the four components of an XMVECTOR Data Type containing integer data referenced by an index.

https://docs.microsoft.com/en-us/windows/win32/api/directxmath/nf-directxmath-XMVectorSetByIndex