Cargo Features

[dependencies]
nano-gemm = { version = "0.2.2", default-features = false, features = ["std", "x86-v4"] }
default = std

The std feature is set by default whenever nano-gemm is added without default-features = false somewhere in the dependency tree.

std default
x86-v4

Enables x86-v4 of nano-gemm-c32, nano-gemm-c64, nano-gemm-f32, and nano-gemm-f64

nano-gemm has 3 features without comments.