1 files changed, 23 insertions, 0 deletions
diff --git a/users/sterni/nix/float/default.nix b/users/sterni/nix/float/default.nix
new file mode 100644
index 0000000000..ecb6465c88
--- /dev/null
+++ b/users/sterni/nix/float/default.nix
@@ -0,0 +1,23 @@
+{ depot, ... }:
+
+let
+  inherit (depot.users.sterni.nix)
+    num
+    ;
+in
+
+rec {
+  # In C++ Nix, the required builtins have been added in version 2.4
+  ceil = builtins.ceil or (throw "Nix implementation is missing builtins.ceil");
+  floor = builtins.floor or (throw "Nix implementation is missing builtins.floor");
+
+  truncate = f: if f >= 0 then floor f else ceil f;
+  round = f:
+    let
+      s = num.sign f;
+      a = s * f;
+    in
+    s * (if a >= floor a + 0.5 then ceil a else floor a);
+
+  intToFloat = i: i * 1.0;
+}