added snprintf and a test for it

1 files changed, 19 insertions, 0 deletions

diff --git a/tests/libc/test_sprintf.c b/tests/libc/test_sprintf.c
new file mode 100644
index 0000000..b1f25c7
--- /dev/null
+++ b/tests/libc/test_sprintf.c
@@ -0,0 +1,19 @@
+#include "string.h"
+#include "stdlib.h"
+#include "stdio.h"
+#include "string.h"
+
+int main( void )
+{
+	char *s = "test_string";
+	int i = 47;
+	char c = 'X';
+	char buf[100];
+	const char *must = "string 'test_string', decimal 47, hex 0x2F, character 'X'\n";
+
+	snprintf( buf, 100, "string '%s', decimal %d, hex 0x%X, character '%c'\n",
+		s, i, i, c );
+	if( strncmp( buf, must, strlen( must ) ) != 0 ) exit( 1 );
+
+	exit( 0 );
+}