initial commit

based on sources of https://github.com/noahbald/noe which are MIT-licensed

src/ordering.zig

@@ -0,0 +1,21 @@
+pub const Ordering = enum(u2) {
+    less = 0,
+    equal = 1,
+    greater = 2,
+
+    pub fn cmp(a: anytype, b: anytype) Ordering {
+        if (a < b) return .less else if (a == b) return .equal else return .greater;
+    }
+
+    pub fn gte(self: Ordering) bool {
+        return @intFromEnum(self) > 1;
+    }
+
+    pub fn lte(self: Ordering) bool {
+        return @intFromEnum(self) < 1;
+    }
+
+    pub fn is(self: Ordering, other: Ordering) bool {
+        return @intFromEnum(self) == @intFromEnum(other);
+    }
+};