diff --git a/test/Jamfile b/test/Jamfile
index 17470c92..f3eb7cde 100644
--- a/test/Jamfile
+++ b/test/Jamfile
@@ -48,8 +48,6 @@ compile-fail concepts_test.cpp ;
 run github_issue_426.cpp ;
 run github_issue_448.cpp ;
 run-fail github_issue_519.cpp ;
-run ibm_abs.cpp ;
-run ibm_add.cpp ;
 run link_1.cpp link_2.cpp link_3.cpp ;
 run quick.cpp ;
 run random_decimal32_comp.cpp ;
diff --git a/test/ibm_abs.cpp b/test/ibm_abs.cpp
deleted file mode 100644
index e0b43fe5..00000000
--- a/test/ibm_abs.cpp
+++ /dev/null
@@ -1,94 +0,0 @@
-// Copyright 2023 Matt Borland
-// Copyright (c) Mike Cowlishaw,  1981, 2010.
-// Parts copyright (c) IBM Corporation, 1981, 2008.
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-//
-// Derived from: https://speleotrove.com/decimal/dectest.html
-
-#include <boost/decimal.hpp>
-#include <boost/core/lightweight_test.hpp>
-#include <limits>
-
-template <typename T>
-void test()
-{
-    BOOST_TEST_EQ(abs(T(1)), T(1));
-    BOOST_TEST_EQ(abs(T(-1)), T(1));
-    BOOST_TEST_EQ(abs(T(1.00)), T(1.00));
-    BOOST_TEST_EQ(abs(T(-1.00)), T(1.00));
-    BOOST_TEST_EQ(abs(T(0)), T(0.0));
-    BOOST_TEST_EQ(abs(T(-0.0)), T(0.0));
-    BOOST_TEST_EQ(abs(T(2)), T(2));
-    BOOST_TEST_EQ(abs(T(-2)), T(2));
-    BOOST_TEST_EQ(abs(T(2.00)), T(2.00));
-    BOOST_TEST_EQ(abs(T(-2.00)), T(2.00));
-    BOOST_TEST_EQ(abs(T(2000000)), T(2000000));
-    BOOST_TEST_EQ(abs(T(-2000000)), T(2000000));
-
-    BOOST_TEST_EQ(abs(T(0.1)), T(0.1));
-    BOOST_TEST_EQ(abs(T(0.01)), T(0.01));
-    BOOST_TEST_EQ(abs(T(0.001)), T(0.001));
-    BOOST_TEST_EQ(abs(T(0.00001)), T(0.00001));
-    BOOST_TEST_EQ(abs(T(0.000001)), T(0.000001));
-
-    BOOST_TEST_EQ(abs(T(-0.1)), T(0.1));
-    BOOST_TEST_EQ(abs(T(-0.01)), T(0.01));
-    BOOST_TEST_EQ(abs(T(-0.001)), T(0.001));
-    BOOST_TEST_EQ(abs(T(-0.00001)), T(0.00001));
-    BOOST_TEST_EQ(abs(T(-0.000001)), T(0.000001));
-    BOOST_TEST_EQ(abs(T(-0.000000000000000000001)), T(1, -21));
-
-    BOOST_TEST_EQ(abs(T(2.1)), T(2.1));
-    BOOST_TEST_EQ(abs(T(-100)), T(100));
-    BOOST_TEST_EQ(abs(T(101.5)), T(101.5));
-    BOOST_TEST_EQ(abs(T(-101.5)), T(101.5));
-}
-
-template <typename T>
-void overflow_underflow_subnormals()
-{
-    BOOST_DECIMAL_IF_CONSTEXPR (std::is_same<T, boost::decimal::decimal32>::value)
-    {
-        BOOST_TEST(isinf(abs(T(9.999e+200))));
-        BOOST_TEST_EQ(abs(T(0.1e-200)), T(0.0));
-        BOOST_TEST_EQ(abs(T(-0.1e-200)), T(0.0));
-    }
-    #if (BOOST_DECIMAL_LDBL_BITS > 64)
-    else BOOST_DECIMAL_IF_CONSTEXPR (std::is_same<T, boost::decimal::decimal64>::value)
-    {
-        BOOST_TEST(isinf(abs(T(9.999e+999L))));
-        BOOST_TEST_EQ(abs(T(0.1e-999L)), T(0.0L));
-        BOOST_TEST_EQ(abs(T(-0.1e-999L)), T(0.0L));
-    }
-    #endif
-}
-
-template <typename T>
-void non_finitie_values()
-{
-    BOOST_TEST_EQ(abs(T(std::numeric_limits<T>::infinity())), T(std::numeric_limits<T>::infinity()));
-    BOOST_TEST(!signbit(abs(T(std::numeric_limits<T>::quiet_NaN()))));
-    BOOST_TEST(!signbit(abs(T(-std::numeric_limits<T>::quiet_NaN()))));
-    BOOST_TEST(!signbit(abs(T(std::numeric_limits<T>::signaling_NaN()))));
-    BOOST_TEST(!signbit(abs(T(-std::numeric_limits<T>::signaling_NaN()))));
-}
-
-
-int main()
-{
-    test<boost::decimal::decimal32>();
-    test<boost::decimal::decimal64>();
-    test<boost::decimal::decimal128>();
-
-    overflow_underflow_subnormals<boost::decimal::decimal32>();
-    overflow_underflow_subnormals<boost::decimal::decimal64>();
-    overflow_underflow_subnormals<boost::decimal::decimal128>();
-
-    non_finitie_values<boost::decimal::decimal32>();
-    non_finitie_values<boost::decimal::decimal64>();
-    non_finitie_values<boost::decimal::decimal128>();
-
-    return boost::report_errors();
-}
-
diff --git a/test/ibm_add.cpp b/test/ibm_add.cpp
deleted file mode 100644
index 1bef0572..00000000
--- a/test/ibm_add.cpp
+++ /dev/null
@@ -1,61 +0,0 @@
-// Copyright 2023 Matt Borland
-// Copyright (c) Mike Cowlishaw,  1981, 2010.
-// Parts copyright (c) IBM Corporation, 1981, 2008.
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-//
-// Derived from: https://speleotrove.com/decimal/dectest.html
-
-#include <boost/decimal.hpp>
-#include <boost/core/lightweight_test.hpp>
-#include <limits>
-#include <iostream>
-#include <iomanip>
-
-template <typename T>
-void test()
-{
-    std::cerr << std::setprecision(std::numeric_limits<T>::digits10);
-
-    BOOST_TEST_EQ(T(1) + T(1), T(2));
-    BOOST_TEST_EQ(T(2) + T(3), T(5));
-    BOOST_TEST_EQ(T(5.75) + T(3.3), T(9.05));
-    BOOST_TEST_EQ(T(5) + T(-2), T(3));
-    BOOST_TEST_EQ(T(-5) + T(-3), T(-8));
-    BOOST_TEST_EQ(T(-7) + T(2.5), T(-4.5));
-    BOOST_TEST_EQ(T(0.7) + T(0.3), T(1.0));
-    BOOST_TEST_EQ(T(1.25) + T(1.25), T(2.50));
-    BOOST_TEST_EQ(T(1.23456789) + T(1.000000000), T(2.23456789));
-    BOOST_TEST_EQ(T(1.23456) + T(1.00044), T(2.23500));
-}
-
-template <typename T>
-void test_inexact()
-{
-    BOOST_TEST_EQ(T(0.444444444444444444444) + T(0.5555555555555555555555), T(1.00000000000000000));
-    BOOST_TEST_EQ(T(0.444444444444444444449) + T(0.0), T(0.4444444444444444444444));
-    BOOST_TEST_EQ(T(0.4444444444444444444499) + T(0.0), T(0.4444444444444444444444));
-    BOOST_TEST_EQ(T(0.44444444444444444444999) + T(0.0), T(0.4444444444444444444444));
-
-    BOOST_DECIMAL_IF_CONSTEXPR (std::is_same<T, boost::decimal::decimal32>::value)
-    {
-        BOOST_TEST_EQ(T(0.4444449) + T(0.0), T(0.4444449));
-        BOOST_TEST_EQ(T(0.4444449) + T(0.0000001), T(0.4444450));
-        BOOST_TEST_EQ(T(0.4444449) + T(0.00000009), T(0.4444450));
-    }
-
-}
-
-int main()
-{
-    test<boost::decimal::decimal32>();
-    test<boost::decimal::decimal64>();
-    test<boost::decimal::decimal128>();
-
-    test_inexact<boost::decimal::decimal32>();
-    test_inexact<boost::decimal::decimal64>();
-    test_inexact<boost::decimal::decimal128>();
-
-    return boost::report_errors();
-}
-