[squeak-dev] The Inbox: Kernel-mt.1412.mcz
commits at source.squeak.org
commits at source.squeak.org
Fri Aug 27 08:16:43 UTC 2021
A new version of Kernel was added to project The Inbox:
http://source.squeak.org/inbox/Kernel-mt.1412.mcz
==================== Summary ====================
Name: Kernel-mt.1412
Author: mt
Time: 27 August 2021, 10:16:40.604421 am
UUID: fdcad3e9-f9f7-fa4d-990a-ac59259860db
Ancestors: Kernel-mt.1411
Fixes rounding for negative receivers and negative arguments. Minor slow-down due to extra sign checks.
=============== Diff against Kernel-mt.1411 ===============
Item was changed:
----- Method: Integer>>roundTo: (in category 'truncation and round off') -----
roundTo: aNumber
"Overwritten to speed-up integer rounding via modulo instead of using intermediate fractions."
+ | rem qua |
- | rem |
aNumber isInteger ifFalse: [^ super roundUpTo: aNumber].
+ self = 0 ifTrue: [^ 0].
+
+ (rem := self \\ (qua := aNumber abs * self sign)) = 0 ifTrue: [^ self].
+ ^ rem abs >= (qua // 2) abs
+ ifTrue: ["round up" self + qua - rem]
+ ifFalse: ["round down" self - rem]
+ !
-
- (rem := self \\ aNumber) = 0 ifTrue: [^ self].
- ^ rem < (aNumber // 2)
- ifTrue: ["round down" self - rem]
- ifFalse: ["round up" self + aNumber - rem]!
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