diff --git a/compiler+runtime/bin/format b/compiler+runtime/bin/format
index fef24ab2..13886269 100755
--- a/compiler+runtime/bin/format
+++ b/compiler+runtime/bin/format
@@ -4,7 +4,7 @@ set -euo pipefail
 
 git_root=$(git rev-parse --show-toplevel)
 
-for i in $(git status | grep -E "modified:" | sed 's/modified:\s*//'); do
-  "$git_root"/compiler+runtime/build/llvm-install/usr/local/bin/clang-format -i "$i"
-  echo "formatted" "$i"
+for i in $(git status | grep -E "modified:.*[hc]pp" | sed 's/modified:\s*//'); do
+  "${git_root}"/compiler+runtime/build/llvm-install/usr/local/bin/clang-format -i "${i}"
+  echo "formatted" "${i}"
 done
diff --git a/compiler+runtime/include/cpp/jank/c_api.h b/compiler+runtime/include/cpp/jank/c_api.h
index e582e448..bca7c12b 100644
--- a/compiler+runtime/include/cpp/jank/c_api.h
+++ b/compiler+runtime/include/cpp/jank/c_api.h
@@ -110,6 +110,7 @@ extern "C"
   jank_object_ptr jank_false();
   jank_object_ptr jank_integer_create(jank_native_integer i);
   jank_object_ptr jank_real_create(jank_native_real r);
+  jank_object_ptr jank_ratio_create(jank_native_integer numerator, jank_native_integer denominator);
   jank_object_ptr jank_string_create(char const *s);
   jank_object_ptr jank_symbol_create(jank_object_ptr ns, jank_object_ptr name);
   jank_object_ptr jank_character_create(char const *s);
diff --git a/compiler+runtime/include/cpp/jank/codegen/llvm_processor.hpp b/compiler+runtime/include/cpp/jank/codegen/llvm_processor.hpp
index 6d015ee7..31af9eb4 100644
--- a/compiler+runtime/include/cpp/jank/codegen/llvm_processor.hpp
+++ b/compiler+runtime/include/cpp/jank/codegen/llvm_processor.hpp
@@ -123,6 +123,7 @@ namespace jank::codegen
     llvm::Value *gen_global(obj::boolean_ptr b) const;
     llvm::Value *gen_global(obj::integer_ptr i) const;
     llvm::Value *gen_global(obj::real_ptr r) const;
+    llvm::Value *gen_global(obj::ratio_ptr r) const;
     llvm::Value *gen_global(obj::persistent_string_ptr s) const;
     llvm::Value *gen_global(obj::symbol_ptr s);
     llvm::Value *gen_global(obj::keyword_ptr k) const;
diff --git a/compiler+runtime/src/cpp/jank/c_api.cpp b/compiler+runtime/src/cpp/jank/c_api.cpp
index cfbd0d4c..aaf350ab 100644
--- a/compiler+runtime/src/cpp/jank/c_api.cpp
+++ b/compiler+runtime/src/cpp/jank/c_api.cpp
@@ -358,6 +358,12 @@ extern "C"
     return erase(make_box(r));
   }
 
+  jank_object_ptr
+  jank_ratio_create(jank_native_integer const numerator, jank_native_integer const denominator)
+  {
+    return erase(make_box(runtime::obj::ratio_data(numerator, denominator)));
+  }
+
   jank_object_ptr jank_string_create(char const *s)
   {
     assert(s);
diff --git a/compiler+runtime/src/cpp/jank/codegen/llvm_processor.cpp b/compiler+runtime/src/cpp/jank/codegen/llvm_processor.cpp
index 9cf69805..62899c34 100644
--- a/compiler+runtime/src/cpp/jank/codegen/llvm_processor.cpp
+++ b/compiler+runtime/src/cpp/jank/codegen/llvm_processor.cpp
@@ -358,7 +358,8 @@ namespace jank::codegen
                      || std::same_as<T, runtime::obj::real> || std::same_as<T, runtime::obj::symbol>
                      || std::same_as<T, runtime::obj::character>
                      || std::same_as<T, runtime::obj::keyword>
-                     || std::same_as<T, runtime::obj::persistent_string>)
+                     || std::same_as<T, runtime::obj::persistent_string>
+                     || std::same_as<T, runtime::obj::ratio>)
         {
           return gen_global(typed_o);
         }
@@ -967,6 +968,45 @@ namespace jank::codegen
     return ctx->builder->CreateLoad(ctx->builder->getPtrTy(), global);
   }
 
+  llvm::Value *llvm_processor::gen_global(obj::ratio_ptr const r) const
+  {
+    if(auto const found(ctx->literal_globals.find(r)); found != ctx->literal_globals.end())
+    {
+      return ctx->builder->CreateLoad(ctx->builder->getPtrTy(), found->second);
+    }
+
+    auto &global(ctx->literal_globals[r]);
+    auto const name(fmt::format("ratio_{}", r->to_hash()));
+    auto const var(create_global_var(name));
+    ctx->module->insertGlobalVariable(var);
+    global = var;
+
+    auto const prev_block(ctx->builder->GetInsertBlock());
+    {
+      llvm::IRBuilder<>::InsertPointGuard const guard{ *ctx->builder };
+      ctx->builder->SetInsertPoint(ctx->global_ctor_block);
+
+      auto const create_fn_type(
+        llvm::FunctionType::get(ctx->builder->getPtrTy(),
+                                { ctx->builder->getInt64Ty(), ctx->builder->getInt64Ty() },
+                                false));
+      auto const create_fn(ctx->module->getOrInsertFunction("jank_ratio_create", create_fn_type));
+      auto const num_arg(
+        llvm::ConstantInt::getSigned(ctx->builder->getInt64Ty(), r->data.numerator));
+      auto const denom_arg(
+        llvm::ConstantInt::getSigned(ctx->builder->getInt64Ty(), r->data.denominator));
+      auto const call(ctx->builder->CreateCall(create_fn, { num_arg, denom_arg }));
+      ctx->builder->CreateStore(call, global);
+
+      if(prev_block == ctx->global_ctor_block)
+      {
+        return call;
+      }
+    }
+
+    return ctx->builder->CreateLoad(ctx->builder->getPtrTy(), global);
+  }
+
   llvm::Value *llvm_processor::gen_global(obj::persistent_string_ptr const s) const
   {
     auto const found(ctx->literal_globals.find(s));