Extract spl-math-utils from spl-math (#7421)

* extract math-utils from spl-math

* newline

* replace spl-math with spl-math-utils in spl-token-swap

* remove now-unused deps from spl-math

* remove spl-math from stake-pool deps (it was already unused)

* fix math-utils dep in spl-token-swap-fuzz

* moce crate dirs

* make spl-math the library crate and spl-math-example the program crate

Author: kevinheavey

Cargo.lock

@@ -36,6 +36,7 @@ members = [
   "libraries/discriminator",
   "libraries/concurrent-merkle-tree",
   "libraries/math",
+  "libraries/math-example",
   "libraries/merkle-tree-reference",
   "libraries/pod",
   "libraries/program-error",

Cargo.toml

@@ -0,0 +1,31 @@
+[package]
+name = "spl-math-example"
+version = "0.1.0"
+description = "Solana Program Library Math Example"
+authors = ["Solana Labs Maintainers <[email protected]>"]
+repository = "https://github.com/solana-labs/solana-program-library"
+license = "Apache-2.0"
+edition = "2021"
+
+[features]
+no-entrypoint = []
+test-sbf = []
+
+[dependencies]
+borsh = "1.5.1"
+num-derive = "0.4"
+num-traits = "0.2"
+solana-program = "2.1.0"
+spl-math = { path = "../math", version = "0.3.0" }
+thiserror = "1.0"
+
+[dev-dependencies]
+solana-program-test = "2.1.0"
+solana-sdk = "2.1.0"
+
+[lib]
+crate-type = ["cdylib", "lib"]
+
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]

libraries/math-example/Cargo.toml

@@ -0,0 +1,8 @@
+# Math
+
+Program wrapper around the spl-math-utils crate. The program exists for testing purposes.
+
+## Audit
+
+The repository [README](https://github.com/solana-labs/solana-program-library#audits)
+contains information about program audits.

libraries/math-example/README.md

@@ -0,0 +1,13 @@
+//! Math operations using unsigned integers
+
+#![deny(missing_docs)]
+#![forbid(unsafe_code)]
+
+mod entrypoint;
+pub mod error;
+pub mod instruction;
+pub mod processor;
+
+pub use spl_math::{approximations, checked_ceil_div, precise_number, uint};
+
+solana_program::declare_id!("Math111111111111111111111111111111111111111");