1 files changed, 31 insertions, 0 deletions
diff --git a/src/stdio/sprintf.c b/src/stdio/sprintf.c
new file mode 100644
index 00000000..babd4ba3
--- /dev/null
+++ b/src/stdio/sprintf.c
@@ -0,0 +1,31 @@
+#include <stdio.h>
+#include "stdarg.h"
+#include "nonstd/io.h"
+#include "nonstd/internal.h"
+
+/** write formatted output to a string **/
+int sprintf(char * restrict s, const char * restrict format, ...)
+{
+	int ret = 0;
+	va_list ap;
+	struct io_options opt = {0};
+	opt.fnname = "sprintf";
+	opt.string = s;
+	opt.maxlen = (size_t)-1;
+	va_start(ap, format);
+	ret = __printf(&opt, format, ap);
+	va_end(ap);
+	/*
+	RETURN_SUCCESS(the number of characters written to the array, not counting the terminating null);
+	*/
+	return ret;
+}
+
+/***
+writes a formatted string to the buffer at ARGUMENT(s). The format of
+ARGUMENT(format) and the variadic arguments is the same as that for
+FUNCTION(printf).
+***/
+/*
+STDC(1)
+*/