1 files changed, 27 insertions, 0 deletions
diff --git a/mozglue/misc/decimal/DoubleConversion.h b/mozglue/misc/decimal/DoubleConversion.h
new file mode 100644
index 0000000000..14c19e2540
--- /dev/null
+++ b/mozglue/misc/decimal/DoubleConversion.h
@@ -0,0 +1,27 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* A utility function that converts a string to a double independent of OS locale. */
+
+#ifndef MOZILLA_DOUBLECONVERSION_H
+#define MOZILLA_DOUBLECONVERSION_H
+
+#include "mozilla/Maybe.h"
+#include "mozilla/Span.h"
+
+#include <string>
+
+namespace mozilla {
+
+// Parses aStringSpan into a double floating point value. Always treats . as the
+// decimal separator, regardless of OS locale. Consumes the entire string;
+// trailing garbage is invalid. Returns Nothing() for invalid input.
+// The implementation uses double_conversion::StringToDoubleConverter with
+// NO_FLAGS, see double-conversion/string-to-double.h for more documentation.
+Maybe<double> StringToDouble(Span<const char> aStringSpan);
+
+}
+
+#endif // MOZILLA_DOUBLECONVERSION_H