Cargo Features

[dependencies]
atomic_float = { version = "1.1.0", default-features = false, features = ["atomic_f64", "serde"] }
default = atomic_f64

The atomic_f64 feature is set by default whenever atomic_float is added without default-features = false somewhere in the dependency tree.

atomic_f64 default

Features from optional dependencies

serde implicit feature

Enables serde

serde:

A generic serialization/deserialization framework