Add lib.mod: integer modulus

7 years ago · 97a4088d33
parent 9fd315a62f
commit 97a4088d33
1 changed files with 10 additions and 0 deletions
--- a/lib/trivial.nix
+++ b/lib/trivial.nix
@ -70,6 +70,16 @@ rec {
  min = x: y: if x < y then x else y;
  max = x: y: if x > y then x else y;

+  /* Integer modulus
+
+     Example:
+       mod 11 10
+       => 1
+       mod 1 10
+       => 1
+  */
+  mod = base: int: base - (int * (builtins.div base int));
+
  /* Reads a JSON file. */
  importJSON = path:
    builtins.fromJSON (builtins.readFile path);