From f957a57ad8cd6a1dc3243a4373f15888b680d87f Mon Sep 17 00:00:00 2001
From: William Carroll <wpcarro@gmail.com>
Date: Sat, 30 Jul 2022 11:29:31 -0700
Subject: feat(wpcarro/emacs): Package math.el

Another Elisp library that I wrote during my manic experience of switching to
EXWM.

Change-Id: I652f5c7228332a7f5822bd408a0c0be8f7bc4b4f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6018
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
---
 users/wpcarro/emacs/pkgs/math/default.nix | 30 +++++++++++++++
 users/wpcarro/emacs/pkgs/math/math.el     | 63 +++++++++++++++++++++++++++++++
 users/wpcarro/emacs/pkgs/math/tests.el    | 25 ++++++++++++
 3 files changed, 118 insertions(+)
 create mode 100644 users/wpcarro/emacs/pkgs/math/default.nix
 create mode 100644 users/wpcarro/emacs/pkgs/math/math.el
 create mode 100644 users/wpcarro/emacs/pkgs/math/tests.el

(limited to 'users/wpcarro/emacs/pkgs')

diff --git a/users/wpcarro/emacs/pkgs/math/default.nix b/users/wpcarro/emacs/pkgs/math/default.nix
new file mode 100644
index 000000000000..9167d61d4edc
--- /dev/null
+++ b/users/wpcarro/emacs/pkgs/math/default.nix
@@ -0,0 +1,30 @@
+{ pkgs, depot, ... }:
+
+let
+  math = pkgs.callPackage
+    ({ emacsPackages }:
+      emacsPackages.trivialBuild {
+        pname = "math";
+        version = "1.0.0";
+        src = ./math.el;
+        packageRequires =
+          (with emacsPackages; [
+            dash
+          ]) ++
+          (with depot.users.wpcarro.emacs.pkgs; [
+            maybe
+          ]);
+      })
+    { };
+
+  emacs = (pkgs.emacsPackagesFor pkgs.emacs28).emacsWithPackages (epkgs: [
+    math
+  ]);
+in
+math.overrideAttrs (_old: {
+  doCheck = true;
+  checkPhase = ''
+    ${emacs}/bin/emacs -batch \
+      -l ert -l ${./tests.el} -f ert-run-tests-batch-and-exit
+  '';
+})
diff --git a/users/wpcarro/emacs/pkgs/math/math.el b/users/wpcarro/emacs/pkgs/math/math.el
new file mode 100644
index 000000000000..dbc527928a30
--- /dev/null
+++ b/users/wpcarro/emacs/pkgs/math/math.el
@@ -0,0 +1,63 @@
+;;; math.el --- Math stuffs -*- lexical-binding: t -*-
+
+;; Author: William Carroll <wpcarro@gmail.com>
+;; Version: 0.0.1
+;; Package-Requires: ((emacs "24.3"))
+
+;;; Commentary:
+;; Containing some useful mathematical functions.
+
+;;; Code:
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Dependencies
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(require 'dash)
+(require 'maybe)
+(require 'cl-lib)
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Constants
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(defconst math-pi pi
+  "The number pi.")
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Functions
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;; TODO: Support all three arguments.
+;; Int -> Int -> Int -> Boolean
+(cl-defun math-triangle-of-power (&key base power result)
+  (cond
+   ((-all? #'maybe-some? (list base power result))
+    (error "All three arguments should not be set"))
+   ((-all? #'maybe-some? (list power result))
+    (message "power and result"))
+   ((-all? #'maybe-some? (list base result))
+    (log result base))
+   ((-all? #'maybe-some? (list base power))
+    (expt base power))
+   (t
+    (error "Two of the three arguments must be set"))))
+
+(defun math-mod (x y)
+  "Return X mod Y."
+  (mod x y))
+
+(defun math-exp (x y)
+  "Return X raised to the Y."
+  (expt x y))
+
+(defun math-round (x)
+  "Round X to nearest ones digit."
+  (round x))
+
+(defun math-floor (x)
+  "Floor value X."
+  (floor x))
+
+(provide 'math)
+;;; math.el ends here
diff --git a/users/wpcarro/emacs/pkgs/math/tests.el b/users/wpcarro/emacs/pkgs/math/tests.el
new file mode 100644
index 000000000000..ef3430c9131b
--- /dev/null
+++ b/users/wpcarro/emacs/pkgs/math/tests.el
@@ -0,0 +1,25 @@
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Dependencies
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(require 'ert)
+(require 'math)
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Tests
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(ert-deftest math-mod ()
+  (should (= 0 (math-mod 9 3)))
+  (should (= 4 (math-mod 9 5))))
+
+(ert-deftest math-exp ()
+  (should (= 9 (math-exp 3 2)))
+  (should (= 8 (math-exp 2 3))))
+
+(ert-deftest math-round ()
+  (should (= 10 (math-round 9.5)))
+  (should (= 9 (math-round 9.45))))
+
+(ert-deftest math-floor ()
+  (should (= 9 (math-floor 9.5))))
-- 
cgit 1.4.1