cpp20

There is constexpr, consteval but constinit is not described.
It could be worth to add it.

It is a very common pitfall of Thrust users to attempt to use a __device__ lambda with Thrust algorithms or iterators that fails in silent or obscure ways.

This is frequently due to the limitation that you cannot reliably query the return type of an extended lambda in host code. Specifically

I would like to be able to determine my device-wide primitive's temp_storage_bytes before I have all of the primitive's arguments ready. The interface for obtaining it ostensibly requires everything to be ready for the actual run - and the documentation does not make it clear what arguments it actually needs and what it's going to do with them (e.g. will it look at the input at all, in any way? Pr

The documentation says this "Even though mp-units library does not implement any Linear Algebra types it is generic enough to be used with other Linear Algebra libraries existing on the market.". A set of examples using Eigen would be helpful. Blaze would probably be good too, but personally I don't use it so it's a lower priority for me.

Good first issue?

There is this trick for writing is_space with x86 when architecture supports > ssse3

auto is_space(uchars_16 v) -> eve::logical<uchars_16>
{
  uchars_16 lookup_table {[](int i, int) {
    // Fill in the register based on element index
    if (i == ('\t' & 0xf)) return '\t';
    if (i == ('\n' & 0xf)) return '\n';
    if (i == ('\r' & 0xf)) return '\r';
    r