1 files changed, 10 insertions, 0 deletions
diff --git a/os/src/sprintf.c b/os/src/sprintf.c
new file mode 100644
index 0000000..76ea9a2
--- /dev/null
+++ b/os/src/sprintf.c
@@ -0,0 +1,10 @@
+#include <reent.h>
+#include <stdarg.h>
+
+int sprintf(char * str, const char * fmt, ...) {
+    int r;
+    va_list ap;
+    va_start(ap, fmt);
+    r = _vsprintf_r(_impure_ptr, str, fmt, ap);
+    va_end(ap);
+}