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-rw-r--r--src/runtime/c/gu/string.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/runtime/c/gu/string.h b/src/runtime/c/gu/string.h
index e4729239c..4064286a9 100644
--- a/src/runtime/c/gu/string.h
+++ b/src/runtime/c/gu/string.h
@@ -48,6 +48,9 @@ gu_string_to_int(GuString s, int *res);
bool
gu_string_to_double(GuString s, double *res);
+void
+gu_double_to_string(double val, GuOut* out, GuExn* err);
+
bool
gu_string_is_prefix(GuString s1, GuString s2);