From 4ee0c83548e9cf2fd86a5636fd52cacffc950512 Mon Sep 17 00:00:00 2001
From: Calixte Denizet <calixte.denizet@gmail.com>
Date: Mon, 28 Nov 2022 14:27:50 +0100
Subject: [PATCH] [JS] Fix a rounding issue in printf (bug 1802888)

---
 src/scripting_api/util.js   |  7 ++++---
 test/unit/scripting_spec.js | 12 ++++++++++++
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/src/scripting_api/util.js b/src/scripting_api/util.js
index 6c8130ceb..262c1f0aa 100644
--- a/src/scripting_api/util.js
+++ b/src/scripting_api/util.js
@@ -155,10 +155,11 @@ class Util extends PDFObject {
           }
           if (decPart.length > 2) {
             decPart = `${decimalSep}${decPart.substring(2)}`;
-          } else if (cFlags & HASH) {
-            decPart = ".";
           } else {
-            decPart = "";
+            if (decPart === "1") {
+              intPart += Math.sign(arg);
+            }
+            decPart = cFlags & HASH ? "." : "";
           }
         }
 
diff --git a/test/unit/scripting_spec.js b/test/unit/scripting_spec.js
index 9ae19cf3d..bfcc10a56 100644
--- a/test/unit/scripting_spec.js
+++ b/test/unit/scripting_spec.js
@@ -280,6 +280,18 @@ describe("Scripting", function () {
           `util.printf("Decimal number: %,0.2f", -12.34567)`
         );
         expect(value).toEqual("Decimal number: -12.35");
+
+        value = await myeval(`util.printf("Decimal number: %,0.0f", 4.95)`);
+        expect(value).toEqual("Decimal number: 5");
+
+        value = await myeval(`util.printf("Decimal number: %,0.0f", 4.49)`);
+        expect(value).toEqual("Decimal number: 4");
+
+        value = await myeval(`util.printf("Decimal number: %,0.0f", -4.95)`);
+        expect(value).toEqual("Decimal number: -5");
+
+        value = await myeval(`util.printf("Decimal number: %,0.0f", -4.49)`);
+        expect(value).toEqual("Decimal number: -4");
       });
 
       it("should print a string with no argument", async () => {