1 files changed, 16 insertions, 0 deletions
diff --git a/src/sign.c b/src/sign.c
new file mode 100644
index 0000000..07c9d7a
--- /dev/null
+++ b/src/sign.c
@@ -0,0 +1,16 @@
+#include <stdio.h>
+#include <glib.h>
+
+/* is there a standard C function to do this? */
+
+gint
+sign (gint n)
+{
+  if (n < 0) {
+    return (-1);
+  } else if (n > 0) {
+    return (+1);
+  }
+
+  return (0);
+}