From d31895098d7e39dd6588652167b6c33b202a0bee Mon Sep 17 00:00:00 2001
From: Duane Nykamp <nykamp@umn.edu>
Date: Mon, 25 Oct 2021 16:49:51 -0500
Subject: [PATCH] don't convert booleans in numerical equality

---
 build/math-expressions.js            | 4 ++++
 build/math-expressions_umd.js        | 4 ++++
 lib/expression/equality/numerical.js | 4 ++++
 package.json                         | 2 +-
 spec/slow_math-expressions.spec.js   | 1 +
 5 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/build/math-expressions.js b/build/math-expressions.js
index 7ce0876..5322e3d 100644
--- a/build/math-expressions.js
+++ b/build/math-expressions.js
@@ -76059,6 +76059,10 @@ const component_equals = function ({ expr, other, randomBindings,
     var expr_evaluated = expr_f(bindings);
     var other_evaluated = other_f(bindings);
 
+    if (typeof expr_evaluated === "boolean" || typeof other_evaluated === "boolean") {
+      return { out_of_bounds: true, always_zero: false };
+    }
+
     var expr_abs = math$19.abs(expr_evaluated);
     var other_abs = math$19.abs(other_evaluated);
 
diff --git a/build/math-expressions_umd.js b/build/math-expressions_umd.js
index a37413f..28c4ca8 100644
--- a/build/math-expressions_umd.js
+++ b/build/math-expressions_umd.js
@@ -76065,6 +76065,10 @@
       var expr_evaluated = expr_f(bindings);
       var other_evaluated = other_f(bindings);
 
+      if (typeof expr_evaluated === "boolean" || typeof other_evaluated === "boolean") {
+        return { out_of_bounds: true, always_zero: false };
+      }
+
       var expr_abs = math$19.abs(expr_evaluated);
       var other_abs = math$19.abs(other_evaluated);
 
diff --git a/lib/expression/equality/numerical.js b/lib/expression/equality/numerical.js
index c001868..6e520fd 100644
--- a/lib/expression/equality/numerical.js
+++ b/lib/expression/equality/numerical.js
@@ -379,6 +379,10 @@ const component_equals = function ({ expr, other, randomBindings,
     var expr_evaluated = expr_f(bindings);
     var other_evaluated = other_f(bindings);
 
+    if (typeof expr_evaluated === "boolean" || typeof other_evaluated === "boolean") {
+      return { out_of_bounds: true, always_zero: false };
+    }
+
     var expr_abs = math.abs(expr_evaluated);
     var other_abs = math.abs(other_evaluated);
 
diff --git a/package.json b/package.json
index 1ab61a9..9dc7886 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "math-expressions",
   "description": "Perform basic equality testing and symbolic computations on mathematical expressions involving transcendental functions",
-  "version": "2.0.0-alpha26",
+  "version": "2.0.0-alpha27",
   "author": {
     "name": "Jim Fowler",
     "email": "kisonecat@gmail.com",
diff --git a/spec/slow_math-expressions.spec.js b/spec/slow_math-expressions.spec.js
index 67886aa..438afe8 100644
--- a/spec/slow_math-expressions.spec.js
+++ b/spec/slow_math-expressions.spec.js
@@ -311,6 +311,7 @@ describe("expression", function () {
     ['5q <= 9z', '-5q <= -9z'],
     ['5q >= 9z', '-5q >= -9z'],
     ['10^(-30)', '2*10^(-30)'],
+    ['0', 't=4'],
   ];
 
   _.each(nonequivalences, function (nonequiv) {