Test updates

Author: tgross35

library/std/build.rs

@@ -85,7 +85,7 @@ fn main() {
     println!("cargo:rustc-check-cfg=cfg(reliable_f16)");
     println!("cargo:rustc-check-cfg=cfg(reliable_f128)");
 
-    // This is a step above just having the types and basic functions available. Math functions
+    // This is a step beyond only having the types and basic functions available. Math functions
     // aren't consistently available or correct.
     println!("cargo:rustc-check-cfg=cfg(reliable_f16_math)");
     println!("cargo:rustc-check-cfg=cfg(reliable_f128_math)");
@@ -136,14 +136,14 @@ fn main() {
     // LLVM is currenlty adding missing routines, <https://github.com/llvm/llvm-project/issues/93566>
     let has_reliable_f16_math = has_reliable_f16
         && match (target_arch.as_str(), target_os.as_str()) {
-            ("aarch64", _) => true,
-            _ => false,
+            ("x86", _) => false,
+            _ => true,
         };
 
     let has_reliable_f128_math = has_reliable_f128
         && match (target_arch.as_str(), target_os.as_str()) {
-            ("aarch64", _) => true,
-            _ => false,
+            // ("aarch64", _) => false,
+            _ => true,
         };
 
     if has_reliable_f16 {