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-rw-r--r--core/ustring.cpp10
1 files changed, 10 insertions, 0 deletions
diff --git a/core/ustring.cpp b/core/ustring.cpp
index 7ee2fee312..7850c6774c 100644
--- a/core/ustring.cpp
+++ b/core/ustring.cpp
@@ -1337,7 +1337,17 @@ String String::num_scientific(double p_num) {
char buf[256];
#if defined(__GNUC__) || defined(_MSC_VER)
+
+#if (defined(__MINGW32__) || (defined(_MSC_VER) && _MSC_VER < 1900)) && defined(_TWO_DIGIT_EXPONENT)
+ // MinGW and old MSC require _set_output_format() to conform to C99 output for printf
+ unsigned int old_exponent_format = _set_output_format(_TWO_DIGIT_EXPONENT);
+#endif
snprintf(buf, 256, "%lg", p_num);
+
+#if (defined(__MINGW32__) || (defined(_MSC_VER) && _MSC_VER < 1900)) && defined(_TWO_DIGIT_EXPONENT)
+ _set_output_format(old_exponent_format);
+#endif
+
#else
sprintf(buf, "%.16lg", p_num);
#endif