Cargo Features

ethcore-bigint has no features set by default.

[dependencies]
ethcore-bigint = { version = "0.2.1", features = ["std", "x64asm_arithmetic", "rust_arithmetic", "heapsizeof"] }
std

Enables std of bigint

x64asm_arithmetic
rust_arithmetic
heapsizeof = heapsize

Enables heapsizeof of bigint

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.

heapsize heapsizeof?