Fixes pharo-project#4701

The implementation of asInteger doing truncation instead of the ansi way of doing rounded is taken over from Squeak. It seems like the morphic system is depending on asInteger doing truncation instead of rounding. I added a comment in asInteger to warn about the fact that we are not ansi compliant.

Author: kasperosterbye

src/Kernel-Tests/NumberTest.class.st

@@ -9,8 +9,9 @@ Class {
 
 { #category : #test }
 NumberTest >> testAsInteger [
-	self assert: 0.5 asInteger equals: 1.
-	self assert: (1/2) asInteger equals: 1
+	"ensure we keep using truncated in asInteger"
+	self assert: 0.5 asInteger equals: 0.
+	self assert: (1/2) asInteger equals: 0
 
 ]
 
@@ -173,3 +174,12 @@ NumberTest >> testReciprocal [
 
 	self should: [ 0 reciprocal ] raise: ZeroDivide
 ]
+
+{ #category : #test }
+NumberTest >> testRounded [
+
+	self assert: 0 rounded equals: 0.
+	self assert: 1 rounded equals: 1.
+	self assert: (1/2) rounded equals: 1.
+	self assert: ((1/2) - Float epsilon) rounded equals: 0.
+]

src/Kernel/Number.class.st

@@ -264,9 +264,10 @@ Number >> asFloat [
 
 { #category : #converting }
 Number >> asInteger [
-	"Answer the result of sending #rounded to the receiver"
+	"Round me towards nearest integer closer to zero."
+	"This violates the ANSI standard, but the system depends on this"
 
-	^self rounded
+	^self truncated 
 ]
 
 { #category : #converting }