From 246aea023d61b3058862b37343e4d3465c60fc5b Mon Sep 17 00:00:00 2001
From: Michael Bloom <mike.r.bloom@protonmail.com>
Date: Thu, 25 Jul 2024 18:48:01 -0400
Subject: [PATCH] Copy coeff from const ref

---
 include/sdsp/casc2orderIIR.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/sdsp/casc2orderIIR.h b/include/sdsp/casc2orderIIR.h
index 4b779d3..955e2a9 100644
--- a/include/sdsp/casc2orderIIR.h
+++ b/include/sdsp/casc2orderIIR.h
@@ -25,7 +25,7 @@ class casc2orderIIR {
         static_assert(M % 2 == 0, "M must be even!");
     }
 
-    void copy_coeff_from(casc2orderIIR<M> otherFilter)
+    void copy_coeff_from(const casc2orderIIR<M> &otherFilter)
     {
         gain = otherFilter.gain;
         bCoeff = otherFilter.bCoeff;
@@ -271,7 +271,7 @@ class casc_2o_IIR_lp : casc_2o_IIR<M> {
         static_assert(M % 2 == 0, "M must be even!");
     }
 
-    void copy_coeff_from(casc_2o_IIR_lp<M> otherFilter)
+    void copy_coeff_from(const casc_2o_IIR_lp<M> &otherFilter)
     {
         this->gain = otherFilter.gain;
         this->aCoeff = otherFilter.aCoeff;
@@ -329,7 +329,7 @@ class casc_2o_IIR_hp : casc_2o_IIR<M> {
         static_assert(M % 2 == 0, "M must be even!");
     }
 
-    void copy_coeff_from(casc_2o_IIR_hp<M> otherFilter)
+    void copy_coeff_from(const casc_2o_IIR_hp<M> &otherFilter)
     {
         this->gain = otherFilter.gain;
         this->aCoeff = otherFilter.aCoeff;
@@ -387,7 +387,7 @@ class casc_2o_IIR_bp : casc_2o_IIR<M> {
         static_assert(M % 2 == 0, "M must be even!");
     }
 
-    void copy_coeff_from(casc_2o_IIR_bp<M> otherFilter)
+    void copy_coeff_from(const casc_2o_IIR_bp<M> &otherFilter)
     {
         this->gain = otherFilter.gain;
         this->aCoeff = otherFilter.aCoeff;