fix: update tests for tupled params, restore CHANGELOG entries

Update tests for comb, copysign, fmod, pow, atan2, dist to use tupled
calling convention matching the corrected type signatures. Restore
PR #251 entries that were dropped from the Unreleased CHANGELOG section.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: dbrattli

CHANGELOG.md

@@ -11,9 +11,16 @@ All notable changes to this project will be documented in this file.
 
 ### 🐞 Bug Fixes
 
-* Fix `math.copysign` binding: `y` parameter was incorrectly typed as `int`, now correctly `float` — `copysign(x, y)` always takes two floats
-* Fix `math.fmod` binding: parameters were incorrectly typed as `int * int -> int`, now correctly `float * float -> float` — `fmod` computes floating-point remainder
-* Fix `math.comb`, `math.pow`, `math.atan2`, `math.dist` bindings: converted curried parameter syntax to tupled for consistency with all other multi-parameter bindings in the codebase
+* Fix `math.factorial` binding: changed signature from `float -> float` to `int -> int` to match Python 3.12+ where float arguments raise `TypeError`. Fixes test to use integer literals.
+* Fix `math.copysign` binding: `y` parameter was incorrectly typed as `int`, now correctly `float`
+* Fix `math.fmod` binding: parameters were incorrectly typed as `int -> int -> int`, now correctly `float * float -> float`
+* Fix `math.comb`, `math.pow`, `math.atan2`, `math.dist` bindings: converted curried parameter syntax to tupled for consistency
+
+### ✨ Enhancements
+
+* Add missing `math` module constants: `pi`, `e`, `tau`, `inf`, `nan`
+* Add missing `math` module functions: `sqrt`, `degrees`, `radians`, `trunc`, `hypot`, `fsum`, `isqrt`, `prod`, `perm`, `acosh`, `asinh`, `atanh`, `cosh`, `sinh`, `tanh`, `erf`, `erfc`, `gamma`, `lgamma`
+* Fix `math.dist` signature to accept float arrays (for multi-dimensional distance)
 
 ## 5.0.0-rc.3 - 2026-04-16
 

test/TestMath.fs

@@ -17,13 +17,13 @@ let ``test floor works`` () =
 
 [<Fact>]
 let ``test comb works`` () =
-    math.comb 5 2 |> equal 10
-    math.comb 10 3 |> equal 120
+    math.comb (5, 2) |> equal 10
+    math.comb (10, 3) |> equal 120
 
 [<Fact>]
 let ``test copysign works`` () =
-    math.copysign 1.0 -1 |> equal -1.0
-    math.copysign -1.0 1 |> equal 1.0
+    math.copysign (1.0, -1.0) |> equal -1.0
+    math.copysign (-1.0, 1.0) |> equal 1.0
 
 [<Fact>]
 let ``test fabs works`` () =
@@ -37,8 +37,8 @@ let ``test factorial works`` () =
 
 [<Fact>]
 let ``test fmod works`` () =
-    math.fmod 10 3 |> equal 1
-    math.fmod 7 2 |> equal 1
+    math.fmod (10.0, 3.0) |> equal 1.0
+    math.fmod (7.0, 2.0) |> equal 1.0
 
 [<Fact>]
 let ``test gcd works`` () =
@@ -89,8 +89,8 @@ let ``test log10 works`` () =
 
 [<Fact>]
 let ``test pow works`` () =
-    math.pow 2.0 3.0 |> equal 8.0
-    math.pow 10.0 2.0 |> equal 100.0
+    math.pow (2.0, 3.0) |> equal 8.0
+    math.pow (10.0, 2.0) |> equal 100.0
 
 [<Fact>]
 let ``test sin works`` () =
@@ -118,7 +118,7 @@ let ``test atan works`` () =
 
 [<Fact>]
 let ``test atan2 works`` () =
-    math.atan2 0.0 1.0 |> equal 0.0
+    math.atan2 (0.0, 1.0) |> equal 0.0
 
 [<Fact>]
 let ``test pi constant works`` () =
@@ -182,7 +182,7 @@ let ``test perm works`` () =
 
 [<Fact>]
 let ``test dist works`` () =
-    math.dist [| 0.0; 0.0 |] [| 3.0; 4.0 |] |> equal 5.0
+    math.dist ([| 0.0; 0.0 |], [| 3.0; 4.0 |]) |> equal 5.0
 
 [<Fact>]
 let ``test cosh works`` () =