5 files changed, 5 insertions, 0 deletions
diff --git a/ext/bigdecimal/lib/bigdecimal/jacobian.rb b/ext/bigdecimal/lib/bigdecimal/jacobian.rb
index d56caab0d3..9cad06c09b 100644
--- a/ext/bigdecimal/lib/bigdecimal/jacobian.rb
+++ b/ext/bigdecimal/lib/bigdecimal/jacobian.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 # require 'bigdecimal/jacobian'
 #
diff --git a/ext/bigdecimal/lib/bigdecimal/ludcmp.rb b/ext/bigdecimal/lib/bigdecimal/ludcmp.rb
index 6cbe29b6da..dd265e482a 100644
--- a/ext/bigdecimal/lib/bigdecimal/ludcmp.rb
+++ b/ext/bigdecimal/lib/bigdecimal/ludcmp.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'bigdecimal'
 
 #
diff --git a/ext/bigdecimal/lib/bigdecimal/math.rb b/ext/bigdecimal/lib/bigdecimal/math.rb
index 4a4fcc2b06..3ddde6a9a0 100644
--- a/ext/bigdecimal/lib/bigdecimal/math.rb
+++ b/ext/bigdecimal/lib/bigdecimal/math.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'bigdecimal'
 
 #
diff --git a/ext/bigdecimal/lib/bigdecimal/newton.rb b/ext/bigdecimal/lib/bigdecimal/newton.rb
index db1a5ad99e..85bacb7f2e 100644
--- a/ext/bigdecimal/lib/bigdecimal/newton.rb
+++ b/ext/bigdecimal/lib/bigdecimal/newton.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require "bigdecimal/ludcmp"
 require "bigdecimal/jacobian"
 
diff --git a/ext/bigdecimal/lib/bigdecimal/util.rb b/ext/bigdecimal/lib/bigdecimal/util.rb
index 82c82c8e1e..0c4e486c00 100644
--- a/ext/bigdecimal/lib/bigdecimal/util.rb
+++ b/ext/bigdecimal/lib/bigdecimal/util.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # BigDecimal extends the native Integer class to provide the #to_d method.
 #
 # When you require the BigDecimal library in your application, this methodwill