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feat: make solana-inflation crate no_std compatible #535

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feat: make solana-inflation crate no_std compatible #535

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8 changes: 8 additions & 0 deletions Cargo.lock
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1 change: 1 addition & 0 deletions inflation/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@ frozen-abi = ["dep:solana-frozen-abi", "dep:solana-frozen-abi-macro"]
serde = ["dep:serde", "dep:serde_derive"]

[dependencies]
num-traits = { workspace = true, default-features = false, features = ["libm"] }
serde = { workspace = true, optional = true }
serde_derive = { workspace = true, optional = true }
solana-frozen-abi = { workspace = true, optional = true }
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7 changes: 6 additions & 1 deletion inflation/src/lib.rs
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Original file line number Diff line number Diff line change
@@ -1,9 +1,14 @@
//! configuration for network inflation
#![no_std]
#![cfg_attr(docsrs, feature(doc_cfg))]
#![cfg_attr(feature = "frozen-abi", feature(min_specialization))]
#[cfg(feature = "serde")]
use serde_derive::{Deserialize, Serialize};

// The import is required for no_std compilation because .powf() which comes from the Float trait (not from std's inherent f64 methods).
#[allow(unused_imports)]
use num_traits::Float;

#[cfg_attr(feature = "frozen-abi", derive(solana_frozen_abi_macro::AbiExample))]
#[cfg_attr(feature = "serde", derive(Deserialize, Serialize))]
#[derive(PartialEq, Clone, Debug, Copy)]
Expand Down Expand Up @@ -89,7 +94,7 @@ impl Inflation {
/// inflation rate at year
pub fn total(&self, year: f64) -> f64 {
assert!(year >= 0.0);
let tapered = self.initial * ((1.0 - self.taper).powf(year));
let tapered = self.initial * (1.0 - self.taper).powf(year);

if tapered > self.terminal {
tapered
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1 change: 1 addition & 0 deletions scripts/check-no-std.sh
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Expand Up @@ -21,6 +21,7 @@ no_std_crates=(
-p solana-epoch-stake
-p solana-fee-calculator
-p solana-hash
-p solana-inflation
-p solana-instruction-view
-p solana-keccak-hasher
-p solana-msg
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