From 7c9bad02d26a59466c760a28989f7045c8f133ad Mon Sep 17 00:00:00 2001
From: Hugo van der Merwe <17109322+hugovdm@users.noreply.github.com>
Date: Fri, 6 Nov 2020 17:55:21 +0000
Subject: [PATCH] ICU-21366 testConverter: allow some double-precision error
 for 0.0

See #1443
---
 icu4c/source/test/intltest/units_test.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/icu4c/source/test/intltest/units_test.cpp b/icu4c/source/test/intltest/units_test.cpp
index c0230703b96..c88116ae3ce 100644
--- a/icu4c/source/test/intltest/units_test.cpp
+++ b/icu4c/source/test/intltest/units_test.cpp
@@ -247,9 +247,12 @@ void UnitsTest::testConverter() {
             continue;
         }
 
+        double maxDelta = 1e-6 * uprv_fabs(testCase.expectedValue);
+        if (testCase.expectedValue == 0) {
+            maxDelta = 1e-12;
+        }
         assertEqualsNear(UnicodeString("testConverter: ") + testCase.source + " to " + testCase.target,
-                         testCase.expectedValue, converter.convert(testCase.inputValue),
-                         0.0001 * uprv_fabs(testCase.expectedValue));
+                         testCase.expectedValue, converter.convert(testCase.inputValue), maxDelta);
     }
 }