Cargo Features

[dependencies]
quaternion-core = { version = "0.5.3", default-features = false, features = ["std", "fma", "libm", "norm-sqrt", "serde-serialize"] }
default = std

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

std default

Enables std of num-traits

fma
libm

Enables libm of num-traits

norm-sqrt
serde-serialize = serde

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

serde serde-serialize?