Update 0.0.1

.gitignore

@@ -5,3 +5,6 @@
 # Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
 # More information here http://doc.crates.io/guide.html#cargotoml-vs-cargolock
 Cargo.lock
+
+# These are backup files generated by rustfmt
+**/*.rs.bk

.travis.yml

@@ -0,0 +1,5 @@
+language: rust
+rust:
+  - stable
+  - beta
+  - nightly

Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "granny"
+version = "0.0.1"
+license = "MIT"
+authors = ["3442853561<3442853561@qq.com>"]
+keywords = ["computing", "scientific computing"]
+
+description = "Granny is the crate for scientific computing with Rust"
+repository = "https://github.com/RustDream/Granny"
+
+[lib]
+name = "granny"
+path = "./src/lib.rs"
+
+[[bin]]
+name = "main"
+path = "./src/examples/main.rs"

src/examples/main.rs

@@ -0,0 +1,7 @@
+extern crate granny;
+
+use granny::Euclidean;
+
+fn main() {
+    println!("{}", 10u8.gcd(8));
+}

src/float.rs

@@ -0,0 +1 @@
+

src/lib.rs

@@ -0,0 +1,3 @@
+pub mod float;
+pub mod math;
+pub use math::Euclidean;

src/math.rs

@@ -0,0 +1,32 @@
+use std::ops::{Div, Rem};
+
+pub trait Euclidean<T>
+    where T: Div + Rem
+{
+    /// Calculate the maximum common divisor
+    fn gcd(self, p: T) -> T;
+}
+
+impl Euclidean<u8> for u8 {
+    fn gcd(self, p: u8) -> u8 {
+        if self % p != 0 { p.gcd(self % p) } else { p }
+    }
+}
+
+impl Euclidean<u16> for u16 {
+    fn gcd(self, p: u16) -> u16 {
+        if self % p != 0 { p.gcd(self % p) } else { p }
+    }
+}
+
+impl Euclidean<u32> for u32 {
+    fn gcd(self, p: u32) -> u32 {
+        if self % p != 0 { p.gcd(self % p) } else { p }
+    }
+}
+
+impl Euclidean<u64> for u64 {
+    fn gcd(self, p: u64) -> u64 {
+        if self % p != 0 { p.gcd(self % p) } else { p }
+    }
+}