Cargo Features

[dependencies]
line-straddler = { version = "0.2.3", default-features = false, features = ["std", "alloc", "libm"] }
default = std

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

std default = alloc
alloc std

Features from optional dependencies

libm implicit feature

Enables libm

libm:

libm in pure Rust