2 files changed, 5 insertions, 29 deletions
diff --git a/users/sterni/nix/int/default.nix b/users/sterni/nix/int/default.nix
index a39a9477e211..e1d7e1fe7e4f 100644
--- a/users/sterni/nix/int/default.nix
+++ b/users/sterni/nix/int/default.nix
@@ -2,31 +2,22 @@
 
 let
 
-  # TODO(sterni): implement nix.float and figure out which of these
-  #               functions can be split out into a common nix.num
-  #               library.
-
   inherit (depot.users.sterni.nix)
     string
+    num
     ;
 
   inherit (builtins)
     bitOr
     bitAnd
     bitXor
-    mul
-    div
-    add
-    sub
     ;
 
-  abs = i: if i < 0 then -i else i;
-
   exp = base: pow:
     if pow > 0
     then base * (exp base (pow - 1))
     else if pow < 0
-    then 1.0 / exp base (abs pow)
+    then 1.0 / exp base (num.abs pow)
     else 1;
 
   bitShiftR = bit: count:
@@ -52,7 +43,7 @@ let
     in
     if int == 0
     then "0"
-    else "${sign}${go (abs int)}";
+    else "${sign}${go (num.abs int)}";
 
   fromHexMap = builtins.listToAttrs
     (lib.imap0 (i: c: { name = c; value = i; })
@@ -94,26 +85,17 @@ let
   odd = x: bitAnd x 1 == 1;
   even = x: bitAnd x 1 == 0;
 
-  # div and mod behave like quot and rem in Haskell,
-  # i. e. they truncate towards 0
+  inherit (builtins) div;
   mod = a: b: let res = a / b; in a - (res * b);
 
-  inRange = a: b: x: x >= a && x <= b;
-
-  sum = builtins.foldl' (a: b: a + b) 0;
-
 in
 {
   inherit
     maxBound
     minBound
-    abs
     exp
     odd
     even
-    add
-    sub
-    mul
     div
     mod
     bitShiftR
@@ -123,7 +105,5 @@ in
     bitXor
     toHex
     fromHex
-    inRange
-    sum
     ;
 }
diff --git a/users/sterni/nix/int/tests/default.nix b/users/sterni/nix/int/tests/default.nix
index 8d2263b42117..bc694ac90a02 100644
--- a/users/sterni/nix/int/tests/default.nix
+++ b/users/sterni/nix/int/tests/default.nix
@@ -15,9 +15,6 @@ let
     ;
 
   testBounds = it "checks minBound and maxBound" [
-    # this is gonna blow up in my face because
-    # integer overflow is undefined behavior in
-    # C++, so most likely anything could happen?
     (assertEq "maxBound is the maxBound" true
       (int.maxBound + 1 < int.maxBound))
     (assertEq "minBound is the minBound" true
@@ -321,7 +318,6 @@ let
   testBasic = it "checks basic int operations" [
     (assertEq "122 is even" (int.even 122 && !(int.odd 122)) true)
     (assertEq "123 is odd" (int.odd 123 && !(int.even 123)) true)
-    (assertEq "abs -4959" (int.abs (-4959)) 4959)
   ];
 
   expNumbers = [
@@ -374,7 +370,7 @@ let
   checkShiftLMulExp = n:
     assertEq "${toString n} >> 6 == ${toString n} * 2 ^ 6"
       (int.bitShiftL n 5)
-      (int.mul n (int.exp 2 5));
+      (n * (int.exp 2 5));
 
   testBit = it "checks bitwise operations" (lib.flatten [
     (builtins.map checkShift shifts)