ICU-13634 Fix Macintosh build error - missing include.

X-SVN-Rev: 41275

diff --git a/icu4c/source/i18n/decimfmt.cpp b/icu4c/source/i18n/decimfmt.cpp
index 0c2e8adec4286759dae7771010a748589e863fe2..f9e2f1258ddec0a828b59f1828bd4168d8f74d07 100644 (file)
--- a/icu4c/source/i18n/decimfmt.cpp
+++ b/icu4c/source/i18n/decimfmt.cpp
@@ -10,6 +10,7 @@
 #define UNISTR_FROM_STRING_EXPLICIT
 
 #include <cmath>
+#include <cstdlib>
 #include <stdlib.h>
 #include "unicode/errorcode.h"
 #include "unicode/decimfmt.h"