## [squeak-dev] The Trunk: KernelTests-nice.208.mcz

commits at source.squeak.org commits at source.squeak.org
Sat Oct 29 13:24:29 UTC 2011

```Nicolas Cellier uploaded a new version of KernelTests to project The Trunk:
http://source.squeak.org/trunk/KernelTests-nice.208.mcz

==================== Summary ====================

Name: KernelTests-nice.208
Author: nice
Time: 29 October 2011, 3:24:06.652 pm
UUID: 98713787-6ba4-424d-b622-0c1f459ac49c
Ancestors: KernelTests-nice.207

There might be a best inexact square root approximation than infinity to some LargePositiveInteger in the range (1<<54-1<<970 to: 1<<54-1<<1994)

=============== Diff against KernelTests-nice.207 ===============

+ ----- Method: IntegerTest>>testBigReceiverInexactSqrt (in category 'tests - mathematical functions') -----
+ 	"
+ 	"
+
+ 	"Inexact 3rd root (not a whole cube number), so a Float must be answered.
+ 	However, receiver is too big for Float arithmethic."
+ 	| bigNum result |
+ 	bigNum := 100 factorial squared + 1.		"Add 1 so it is not a whole square"
+ 	self assert: bigNum asFloat isInfinite.			"Otherwise, we chose a bad sample"
+ 	result := bigNum sqrt.
+ 	self assert: result class == Float.
+ 	self deny: result isInfinite.
+ 	self assert: result = 100 factorial asFloat.		"No other float is closer. See following lines"
+ 	self assert: (result successor asFraction squared - bigNum) abs >= (result asFraction squared - bigNum) abs.
+ 	self assert: (result predecessor asFraction squared - bigNum) abs >= (result asFraction squared - bigNum) abs.!

```