From 28699c62c094833537b726f875375faba25b0c0a Mon Sep 17 00:00:00 2001
From: Jacek Generowicz <jacg@my-post-office.net>
Date: Thu, 18 Aug 2022 10:20:33 +0200
Subject: [PATCH] Implement MulDivAssign with Ratio on RHS

---
 src/system.rs         | 16 ++++++++++++++++
 src/tests/impl_ops.rs |  8 ++++----
 2 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/src/system.rs b/src/system.rs
index a9fb3b70..ff4322f7 100644
--- a/src/system.rs
+++ b/src/system.rs
@@ -553,6 +553,22 @@ macro_rules! system {
                     }
                 }
 
+                impl<D, Ul, Ur, V> $crate::lib::ops::$MulDivAssignTrait<Quantity<DimensionOne, Ur, V>> for Quantity<D, Ul, V>
+                where
+                    D: Dimension + ?Sized,
+                    D::Kind: $crate::marker::$MulDivAssignTrait,
+                    Ul: Units<V> + ?Sized,
+                    Ur: Units<V> + ?Sized,
+                    V: $crate::num::Num + $crate::Conversion<V>
+                        + $crate::lib::ops::$MulDivAssignTrait<V>,
+                {
+                    #[inline(always)]
+                    fn $muldivassign_fun(&mut self, rhs: Quantity<DimensionOne, Ur, V>) {
+                        self.value $muldivassign_op rhs.value;
+                        // change_base is needed for autoconvert! version
+                    }
+                }
+
                 #[doc(hidden)]
                 mod $Mod {
                     storage_types! {
diff --git a/src/tests/impl_ops.rs b/src/tests/impl_ops.rs
index 9e0974ba..f4ce55b0 100644
--- a/src/tests/impl_ops.rs
+++ b/src/tests/impl_ops.rs
@@ -173,10 +173,10 @@ mod vv {
     test!(   div_ratio_right       m(6.)   /      one(2.),   m(3.)); //      6    c.f. BBB below
     test!(ac mul_ratio_right       m(4.)   *  cgs_one(2.),   m(8.)); //      6    c.f. CCC below
     test!(ac div_ratio_right       m(6.)   /  cgs_one(2.),   m(3.)); //      6    c.f. DDD below
- // test!(   mul_assign_ratio    [ m(4.) ] *=     one(2.),   m(8.)); // ERR       c.f. AAA above
- // test!(   div_assign_ratio    [ m(6.) ] /=     one(2.),   m(3.)); // ERR       c.f. BBB above
- // test!(ac mul_assign_ratio    [ m(4.) ] *= cgs_one(2.),   m(8.)); // ERR       c.f. CCC above
- // test!(ac div_assign_ratio    [ m(6.) ] /= cgs_one(2.),   m(3.)); // ERR       c.f. DDD above
+    test!(   mul_assign_ratio    [ m(4.) ] *=     one(2.),   m(8.)); //           c.f. AAA above
+    test!(   div_assign_ratio    [ m(6.) ] /=     one(2.),   m(3.)); //           c.f. BBB above
+    test!(ac mul_assign_ratio    [ m(4.) ] *= cgs_one(2.),   m(8.)); //           c.f. CCC above
+    test!(ac div_assign_ratio    [ m(6.) ] /= cgs_one(2.),   m(3.)); //           c.f. DDD above
     test!(   mul_bare_right        m(4.)   *          2. ,   m(8.)); //       7
     test!(   div_bare_right        m(6.)   /          2. ,   m(3.)); //       7
     test!(   mul_assign_bare     [ m(2.) ] *=         3. ,   m(6.)); //        8