Will Metal Performance Shaders Framework ('MPS') support Float64?
https://developer.apple.com/documentation/metalperformanceshaders
Will Metal Performance Shaders Framework ('MPS') support Float64?
https://developer.apple.com/documentation/metalperformanceshaders
Note that most recent Intel gpus removed fp64 support. Maybe Apple won't update their Intel lineup, so you'll be safe.
Apple GPUs do not support FP64 and neither does Metal.