Cargo Features
[dependencies]
rand = { version = "0.8.5", default-features = false, features = ["nightly", "serde1", "std", "alloc", "getrandom", "simd_support", "std_rng", "small_rng", "min_const_gen", "log"] }- default = std, std_rng
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Meta-features:
- nightly
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enables performance optimizations requiring nightly rust
- serde1 = serde
- std default = alloc, getrandom, libc
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Option (enabled by default): without "std" rand uses libcore; this option enables functionality expected to be available on a standard platform.
Enables std of rand_chacha and rand_core
Affects
rngs::adapter,index::sample_weighted,seq::SliceRandom.choose_multiple_weighted,rand::random… - alloc std
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Option: "alloc" enables support for Vec and Box when not using "std"
Affects
distribution::DistString,distributions::weighted,seq::index,seq::SliceRandom.choose_multiple,seq::SliceRandom.choose_weighted,seq::SliceRandom.choose_weighted_mut,seq::IteratorRandom.choose_multiple,seq::SliceChooseIter… - getrandom std
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Option: use getrandom package for seeding
- simd_support = packed_simd
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Option (requires nightly): experimental SIMD support
- std_rng default = rand_chacha
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Option (enabled by default): enable StdRng
Affects
rand::random… - small_rng
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Option: enable SmallRng
- min_const_gen
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Option: for rustc ≥ 1.51, enable generating random arrays of any size using min-const-generics
Features from optional dependencies
In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features.
- log implicit feature
- serde serde1?
- rand_chacha std_rng
- libc cfg(unix) std
- packed_simd simd_support?
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Enables into_bits of packed_simd_2