1 files changed, 18 insertions, 0 deletions
diff --git a/utils.c b/utils.c
new file mode 100644
index 0000000..4f75298
--- /dev/null
+++ b/utils.c
@@ -0,0 +1,18 @@
+#include <u.h>
+#include <libc.h>
+#include <draw.h>
+
+double
+fclamp(double n, double min, double max)
+{
+	return n < min? min: n > max? max: n;
+}
+
+int
+alphachan(ulong chan)
+{
+	for(; chan; chan >>= 8)
+		if(TYPE(chan) == CAlpha)
+			return 1;
+	return 0;
+}