Add GetNumAsString for float

Author: lucic71

cpp2rust/converter/converter.cpp

@@ -2329,16 +2329,7 @@ bool Converter::VisitIntegerLiteral(clang::IntegerLiteral *expr) {
 }
 
 bool Converter::VisitFloatingLiteral(clang::FloatingLiteral *expr) {
-  auto value = expr->getValue();
-  if (&value.getSemantics() == &llvm::APFloat::IEEEsingle()) {
-    StrCat(std::format("{}_f32", value.convertToFloat()));
-  } else {
-    bool loses_info = false;
-    value.convert(llvm::APFloat::IEEEdouble(),
-                  llvm::APFloat::rmNearestTiesToEven, &loses_info);
-    StrCat(value.isInfinity() ? std::string("f64::INFINITY")
-                              : std::format("{}_f64", value.convertToDouble()));
-  }
+  StrCat(GetNumAsString(expr->getValue()));
   computed_expr_type_ = ComputedExprType::FreshValue;
   return false;
 }

cpp2rust/converter/converter_lib.cpp

@@ -262,6 +262,17 @@ bool IsCodeUnitStringLiteral(const clang::StringLiteral *expr) {
          expr->getKind() == clang::StringLiteralKind::UTF8;
 }
 
+std::string GetNumAsString(llvm::APFloat value) {
+  if (&value.getSemantics() == &llvm::APFloat::IEEEsingle()) {
+    return std::format("{}_f32", value.convertToFloat());
+  }
+  bool loses_info = false;
+  value.convert(llvm::APFloat::IEEEdouble(),
+                llvm::APFloat::rmNearestTiesToEven, &loses_info);
+  return value.isInfinity() ? "f64::INFINITY"
+                            : std::format("{}_f64", value.convertToDouble());
+}
+
 bool IsUserDefinedDecl(const clang::Decl *decl) {
   const auto &ctx = decl->getASTContext();
   const auto &src_mgr = ctx.getSourceManager();

cpp2rust/converter/converter_lib.h

@@ -191,6 +191,8 @@ template <class T> llvm::SmallString<16> GetNumAsString(const T &num) {
   return small_string;
 }
 
+std::string GetNumAsString(llvm::APFloat value);
+
 clang::QualType GetReturnTypeOfFunction(const clang::CallExpr *expr);
 
 const char *GetOverloadedOperator(const clang::FunctionDecl *decl);