1 files changed, 23 insertions, 7 deletions
diff --git a/lib/libcxx/utils/google-benchmark/src/string_util.h b/lib/libcxx/utils/google-benchmark/src/string_util.h
index 0b190b91a16..4a5501273cf 100644
--- a/lib/libcxx/utils/google-benchmark/src/string_util.h
+++ b/lib/libcxx/utils/google-benchmark/src/string_util.h
@@ -10,31 +10,47 @@ namespace benchmark {
 
 void AppendHumanReadable(int n, std::string* str);
 
-std::string HumanReadableNumber(double n);
+std::string HumanReadableNumber(double n, double one_k = 1024.0);
 
-std::string StringPrintF(const char* format, ...);
+std::string StrFormat(const char* format, ...);
 
-inline std::ostream& StringCatImp(std::ostream& out) BENCHMARK_NOEXCEPT {
+inline std::ostream& StrCatImp(std::ostream& out) BENCHMARK_NOEXCEPT {
   return out;
 }
 
 template <class First, class... Rest>
-inline std::ostream& StringCatImp(std::ostream& out, First&& f,
-                                  Rest&&... rest) {
+inline std::ostream& StrCatImp(std::ostream& out, First&& f, Rest&&... rest) {
   out << std::forward<First>(f);
-  return StringCatImp(out, std::forward<Rest>(rest)...);
+  return StrCatImp(out, std::forward<Rest>(rest)...);
 }
 
 template <class... Args>
 inline std::string StrCat(Args&&... args) {
   std::ostringstream ss;
-  StringCatImp(ss, std::forward<Args>(args)...);
+  StrCatImp(ss, std::forward<Args>(args)...);
   return ss.str();
 }
 
 void ReplaceAll(std::string* str, const std::string& from,
                 const std::string& to);
 
+#ifdef BENCHMARK_STL_ANDROID_GNUSTL
+/*
+ * GNU STL in Android NDK lacks support for some C++11 functions, including
+ * stoul, stoi, stod. We reimplement them here using C functions strtoul,
+ * strtol, strtod. Note that reimplemented functions are in benchmark::
+ * namespace, not std:: namespace.
+ */
+unsigned long stoul(const std::string& str, size_t* pos = nullptr,
+                           int base = 10);
+int stoi(const std::string& str, size_t* pos = nullptr, int base = 10);
+double stod(const std::string& str, size_t* pos = nullptr);
+#else
+using std::stoul;
+using std::stoi;
+using std::stod;
+#endif
+
 }  // end namespace benchmark
 
 #endif  // BENCHMARK_STRING_UTIL_H_