Cargo Features

[dependencies]
wavegen = { version = "0.4.1", default-features = false, features = ["std", "libm"] }
default = std

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

std default

Enables std of num-traits

libm

Enables libm, libm of num-traits

wavegen has 3 features without comments.