diff --git a/elastic/decimal/api/api.cpp b/elastic/decimal/api/api.cpp
index e40a50307..00c8c3cee 100644
--- a/elastic/decimal/api/api.cpp
+++ b/elastic/decimal/api/api.cpp
@@ -295,7 +295,24 @@ int BigNumberComputation() {
 	return nrOfFailedTestCases;
 }
 
+#include <universal/verification/test_status.hpp>
+
+// Regression testing guards: typically set by the cmake configuration, but MANUAL_TESTING is an override
 #define MANUAL_TESTING 0
+// REGRESSION_LEVEL_OVERRIDE is set by the cmake file to drive a specific regression intensity
+// It is the responsibility of the regression test to organize the tests in a quartile progression.
+//#undef REGRESSION_LEVEL_OVERRIDE
+#ifndef REGRESSION_LEVEL_OVERRIDE
+#undef REGRESSION_LEVEL_1
+#undef REGRESSION_LEVEL_2
+#undef REGRESSION_LEVEL_3
+#undef REGRESSION_LEVEL_4
+#define REGRESSION_LEVEL_1 1
+#define REGRESSION_LEVEL_2 1
+#define REGRESSION_LEVEL_3 1
+#define REGRESSION_LEVEL_4 1
+#endif
+
 #define STRESS_TESTING 0
 
 int main()
diff --git a/elastic/decimal/api/example.cpp b/elastic/decimal/api/example.cpp
new file mode 100644
index 000000000..66c09d672
--- /dev/null
+++ b/elastic/decimal/api/example.cpp
@@ -0,0 +1,37 @@
+#include <iostream>
+#include <iomanip>
+
+#include <universal/number/edecimal/edecimal.hpp>
+
+int main(int argc, char** argv)
+try {
+	using namespace sw::universal;
+	edecimal d, e, f;
+
+	e = 1.0f;
+	f = 0xFFFF'FFFF'FFFF'FFFFull;
+	d = e + f;
+
+    std::cout << "one                      e : " << e << '\n';
+    std::cout << "max unsigned long long   f : " << f << '\n';
+	std::cout << "                         d : " << d << std::endl;
+
+	return EXIT_SUCCESS;
+
+}
+catch (const char* msg) {
+	std::cerr << msg << std::endl;
+	return EXIT_FAILURE;
+}
+catch (const sw::universal::universal_arithmetic_exception& err) {
+	std::cerr << "Unprocessed universal arithmetic exception: " << err.what() << std::endl;
+	return EXIT_FAILURE;
+}
+catch (const sw::universal::universal_internal_exception& err) {
+	std::cerr << "Unprocessed universal internal exception: " << err.what() << std::endl;
+	return EXIT_FAILURE;
+}
+catch (...) {
+	std::cerr << "Caught unknown exception" << std::endl;
+	return EXIT_FAILURE;
+}
diff --git a/include/universal/native/set_fields.hpp b/include/universal/native/set_fields.hpp
index 7a2ae2c78..21ed9384a 100644
--- a/include/universal/native/set_fields.hpp
+++ b/include/universal/native/set_fields.hpp
@@ -16,7 +16,7 @@ namespace sw { namespace universal {
 
 	inline BIT_CAST_CONSTEXPR void setbit(float& v, unsigned index, bool b = true) {
 		uint32_t raw = std::bit_cast<uint32_t, float>(v);
-		uint32_t mask = (1ull << index); // do we want to bound check?
+		uint32_t mask = (1u << index); // do we want to bound check?
 		if (b) raw |= mask; else raw &= ~mask;
 		v = std::bit_cast<float, uint32_t>(raw);
 	}
diff --git a/include/universal/number/edecimal/edecimal_impl.hpp b/include/universal/number/edecimal/edecimal_impl.hpp
index 5c6c8f524..7d7e2a115 100644
--- a/include/universal/number/edecimal/edecimal_impl.hpp
+++ b/include/universal/number/edecimal/edecimal_impl.hpp
@@ -1,7 +1,8 @@
 #pragma once
 // edecimal_impl.hpp: definition of adaptive precision decimal integer data type
 //
-// Copyright (C) 2017-2023 Stillwater Supercomputing, Inc.
+// Copyright (C) 2017 Stillwater Supercomputing, Inc.
+// SPDX-License-Identifier: MIT
 //
 // This file is part of the universal numbers project, which is released under an MIT Open Source license.
 
diff --git a/static/integer/decimal/api/api.cpp b/static/integer/decimal/api/api.cpp
index 5b95866da..c41b1ef79 100644
--- a/static/integer/decimal/api/api.cpp
+++ b/static/integer/decimal/api/api.cpp
@@ -1,6 +1,7 @@
-// api.cpp: test suite runner for class interface tests of the decimal integer type
+// api.cpp: test suite runner for class interface tests of the static (fixed-size) decimal integer type
 //
-// Copyright (C) 2017-2023 Stillwater Supercomputing, Inc.
+// Copyright (C) 2017 Stillwater Supercomputing, Inc.
+// SPDX-License-Identifier: MIT
 //
 // This file is part of the universal numbers project, which is released under an MIT Open Source license.
 #include <universal/utility/directives.hpp>