write some ratio tests

deferred_division/Cargo.lock

@@ -2,13 +2,35 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "bnum"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3e31ea183f6ee62ac8b8a8cf7feddd766317adfb13ff469de57ce033efd6a790"
+
 [[package]]
 name = "deferred_division"
 version = "0.1.0"
 dependencies = [
+ "fixed_wide",
  "fixed_wide_traits",
 ]
 
+[[package]]
+name = "fixed_wide"
+version = "0.1.0"
+dependencies = [
+ "bnum",
+ "fixed_wide_traits",
+ "typenum",
+]
+
 [[package]]
 name = "fixed_wide_traits"
 version = "0.1.0"
+
+[[package]]
+name = "typenum"
+version = "1.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"

deferred_division/Cargo.toml

@@ -9,3 +9,6 @@ fixed_wide_traits=["dep:fixed_wide_traits"]
 
 [dependencies]
 fixed_wide_traits = { version = "0.1.0", path = "../fixed_wide_traits", optional = true }
+
+[dev-dependencies]
+fixed_wide = { version = "0.1.0", path = "../fixed_wide" }

deferred_division/src/tests/mod.rs

@@ -0,0 +1,4 @@
+mod tests;
+
+#[cfg(feature="fixed_wide_traits")]
+mod wide;

deferred_division/src/tests/tests.rs

@@ -0,0 +1,15 @@
+use crate::ratio::Ratio;
+
+#[test]
+fn ratio(){
+	let r=Ratio::new(5,3);
+	let a=r%1;
+	assert_eq!(a.num,2);
+	assert_eq!(a.den,3);
+	let b=r*2;
+	assert_eq!(b.num,10);
+	assert_eq!(b.den,3);
+	let c=r/2;
+	assert_eq!(c.num,5);
+	assert_eq!(c.den,6);
+}

deferred_division/src/tests/wide.rs

@@ -0,0 +1,15 @@
+use crate::ratio::Ratio;
+use fixed_wide_traits::wide::{WideMul,WideDiv};
+use fixed_wide::types::I32F32;
+use fixed_wide::types::I64F64;
+
+#[test]
+fn ratio(){
+	let r=Ratio::new(I32F32::from(5),I32F32::from(3));
+	let a=r.wide_mul(I32F32::from(7)>>2);
+	assert_eq!(a.num,I64F64::from(7*5)>>2);
+	assert_eq!(a.den,I32F32::from(3));
+	let a=r.wide_div(I32F32::from(7)>>2);
+	assert_eq!(a.num,I32F32::from(5));
+	assert_eq!(a.den,I64F64::from(3*7)>>2);
+}