diff --git a/tests/testFloatingPointPrecision.cpp b/tests/testFloatingPointPrecision.cpp
index 077f987..68ef4d3 100644
--- a/tests/testFloatingPointPrecision.cpp
+++ b/tests/testFloatingPointPrecision.cpp
@@ -69,36 +69,42 @@ int main()
                  "8.589973e+9", 8.589973e9L, "8589973000");
 
     std::string expected_float_1d123456789[] = { "1.1234568",
-#if                 MACH_MACOS_ARRAY_IDX  ==  MACH_POST_MACOS14_ARM_CLANG
+#if                 MACH_MACOS_ARRAY_IDX  ==  MACH_POST_MACOS14_ARM_CLANG   \
+     ||             MACH_MACOS_ARRAY_IDX  ==  MACH_PRE_MACOS14_CLANG
                                                  "1.12345684",   // macOS
 //#elif             MACH_MACOS_ARRAY_IDX  ==  MACH_POST_MACOS14_ARM_GNU
-//#elif             MACH_MACOS_ARRAY_IDX  ==  MACH_PRE_MACOS14_CLANG
 #else //  default   MACH_MACOS_ARRAY_IDX  ==  MACH_PRE_MACOS14_GNU
                                                  "1.1234568",
 #endif
                                                  "1.1234568" };
     checkRoundTripConversion_txt2Val2txt<float>("testFloatingPointPrecision-4",
                  "1.123456789", 1.123456789f, expected_float_1d123456789[indexOS]);  // 6 digits
-    std::string expected_double_1d1234567890123456789[] = { "1.1234567890123457",
-                                                            "1.12345678901234569",   // macOS
-                                                            "1.1234567890123457" };
+    std::string expected_double_2d1234567890123456789[] = { "2.1234567890123457",
+#if                 MACH_MACOS_ARRAY_IDX  ==  MACH_POST_MACOS14_ARM_CLANG
+//#elif             MACH_MACOS_ARRAY_IDX  ==  MACH_POST_MACOS14_ARM_GNU
+//#elif             MACH_MACOS_ARRAY_IDX  ==  MACH_PRE_MACOS14_CLANG
+                                                            "2.12345678901234569",   // macOS
+#else //  default   MACH_MACOS_ARRAY_IDX  ==  MACH_PRE_MACOS14_GNU
+                                                            "2.1234567890123457",
+#endif
+                                                            "2.1234567890123457" };
     checkRoundTripConversion_txt2Val2txt<double>("testFloatingPointPrecision-5",
-                 "1.1234567890123456789", 1.1234567890123456789,
-                 expected_double_1d1234567890123456789[indexOS]);   // 15 digits
-    std::string expected_longDouble_1d123456789012345678901[] = { "1.1234567890123456789",
+                 "2.1234567890123456789", 2.1234567890123456789,
+                 expected_double_2d1234567890123456789[indexOS]);   // 15 digits
+    std::string expected_longDouble_3d123456789012345678901[] = { "3.1234567890123456789",
 #if                 MACH_MACOS_ARRAY_IDX  ==  MACH_POST_MACOS14_ARM_CLANG
-                                                                  "1.12345678901234569",
+                                                                  "3.12345678901234569",
 #elif               MACH_MACOS_ARRAY_IDX  ==  MACH_POST_MACOS14_ARM_GNU
-                                                                  "1.1234567890123457",
+                                                                  "3.1234567890123457",
 #elif               MACH_MACOS_ARRAY_IDX  ==  MACH_PRE_MACOS14_CLANG
-                                                                  "1.12345678901234567889",
+                                                                  "3.12345678901234567889",
 #else //  default   MACH_MACOS_ARRAY_IDX  ==  MACH_PRE_MACOS14_GNU
-                                                                  "1.1234567890123456789",
+                                                                  "3.1234567890123456789",
 #endif
-                                                                  "1.1234567890123457" };  // Windows
+                                                                  "3.1234567890123457" };  // Windows
     checkRoundTripConversion_txt2Val2txt<long double>("testFloatingPointPrecision-6",
-                 "1.123456789012345678901", 1.123456789012345678901L,
-                 expected_longDouble_1d123456789012345678901[indexOS]);  //18 digits
+                 "3.123456789012345678901", 3.123456789012345678901L,
+                 expected_longDouble_3d123456789012345678901[indexOS]);  //18 digits
 
 
     checkRoundTripConversion_txt2Val2txt<double>("testFloatingPointPrecision-7",