[clang] C89 doesn't have `math.h` functions (PR #129979)

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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

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``````````bash
git-clang-format --diff 91aac7c379fb92348593d51e3f2d9e490ff67526 160d719b7ed5997d39accb110df873e6200991d4 --extensions cpp,c -- clang/test/C/drs/c89_with_c99_functions.c clang/lib/Basic/Builtins.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Basic/Builtins.cpp b/clang/lib/Basic/Builtins.cpp
index 70ea34da1f..4795a7fca6 100644
--- a/clang/lib/Basic/Builtins.cpp
+++ b/clang/lib/Basic/Builtins.cpp
@@ -137,12 +137,13 @@ bool Builtin::Context::isBuiltinFunc(llvm::StringRef FuncName) {
   return false;
 }
 
-static bool isSymbolAvailableInC89(const llvm::StringTable& Strings, const Builtin::Info & BuiltinInfo) {
+static bool isSymbolAvailableInC89(const llvm::StringTable &Strings,
+                                   const Builtin::Info &BuiltinInfo) {
 
   auto NameStr = Strings[BuiltinInfo.Offsets.Name];
 
   // FIXME: add other C89 symbols here
-  if(NameStr == "log") {
+  if (NameStr == "log") {
     return true;
   }
 
@@ -166,8 +167,7 @@ static bool builtinIsSupported(const llvm::StringTable &Strings,
     return false;
   }
   /* MathBuiltins Unsupported */
-  if (LangOpts.NoMathBuiltin &&
-      BuiltinInfo.Header.ID == HeaderDesc::MATH_H)
+  if (LangOpts.NoMathBuiltin && BuiltinInfo.Header.ID == HeaderDesc::MATH_H)
     return false;
   /* GnuMode Unsupported */
   if (!LangOpts.GNUMode && (BuiltinInfo.Langs & GNU_LANG))

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https://github.com/llvm/llvm-project/pull/129979