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https://issues.apache.org/jira/browse/NUMBERS-156?focusedWorklogId=607536&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-607536
]
ASF GitHub Bot logged work on NUMBERS-156:
------------------------------------------
Author: ASF GitHub Bot
Created on: 06/Jun/21 23:07
Start Date: 06/Jun/21 23:07
Worklog Time Spent: 10m
Work Description: darkma773r commented on a change in pull request #92:
URL: https://github.com/apache/commons-numbers/pull/92#discussion_r646200076
##########
File path:
commons-numbers-arrays/src/test/java/org/apache/commons/numbers/arrays/ExtendedPrecisionTest.java
##########
@@ -102,6 +102,23 @@ void testSubNormalSplit() {
final double lo2 = a - hi2;
Assertions.assertEquals(a, hi2);
Assertions.assertEquals(0, lo2);
+
+
Assertions.assertTrue(Math.abs(hi2) > Math.abs(lo2));
}
+
+ @Test
+ void testSquareLowUnscaled() {
+ assertSquareLowUnscaled(0.0, 1.0);
+ assertSquareLowUnscaled(0.0, -1.0);
+ assertSquareLowUnscaled(-1.4293872661474477E-16, Math.PI);
Review comment:
That sounds good but the expected value computed with `BigDecimal` is
`-8.79470486217151E-16` whereas the `ExtendedPrecision` result is
'-1.4293872661474477E-16'. Is this simply a limitation of the algorithm or is
this a bug in our implementation?
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Issue Time Tracking
-------------------
Worklog Id: (was: 607536)
Time Spent: 3h (was: 2h 50m)
> SafeNorm 3D overload
> --------------------
>
> Key: NUMBERS-156
> URL: https://issues.apache.org/jira/browse/NUMBERS-156
> Project: Commons Numbers
> Issue Type: Improvement
> Reporter: Matt Juntunen
> Priority: Major
> Attachments: performance-all.png, performance-len-1-5.png,
> performance2-1-5.png, performance2-all.png, performance3-1-5.png,
> performance3-all.png, performance4-1-5.png, performance4-all.png,
> performance5-1-5.png, performance5-all.png
>
> Time Spent: 3h
> Remaining Estimate: 0h
>
> We should create an overload of {{SafeNorm.value}} that accepts 3 arguments
> to potentially improve performance for 3D vectors.
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