Rint: Unterschied zwischen den Versionen
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rint([pos=1]) | rint([pos=1]) | ||
rint([var=a]) | rint([var=a]) | ||
====JUnit Tests==== | |||
<syntaxhighlight lang="java" class="mw-collapsible mw-collapsed"> | |||
@Test | |||
public void testRint(){ | |||
assertTrue(12 == getEvaluator().getNumberResult("rint(12.4999)")); | |||
assertTrue(13 == getEvaluator().getNumberResult("rint(12.500001)")); | |||
assertTrue(12 == getEvaluator().getNumberResult("rint(12.5)")); | |||
assertTrue(14 == getEvaluator().getNumberResult("rint(13.5)")); | |||
assertTrue(-99 == getEvaluator().getNumberResult("rint(-99.4999)")); | |||
assertTrue(-100== getEvaluator().getNumberResult("rint(-99.5999)")); | |||
assertTrue(0 == getEvaluator().getNumberResult("rint(-0.00001)")); | |||
assertTrue(0 == getEvaluator().getNumberResult("rint(0.00001)")); | |||
} | |||
@Test | |||
public void testRintWithInput(){ | |||
assertTrue(5 == getEvaluator().getNumberResult("rint([pos=5])")); | |||
assertTrue(1234 == getEvaluator().getNumberResult("rint([pos=1234])")); | |||
} | |||
@Test | |||
public void testRintWithVariables(){ | |||
assertTrue(50 == getEvaluator().getNumberResult("rint([var=f1])")); | |||
assertTrue(100 ==getEvaluator().getNumberResult("rint([var=h])")); | |||
} | |||
@Test | |||
public void testRintWithPointNumbers(){ | |||
assertTrue(0 == getEvaluator().getNumberResult("rint(.2)")); | |||
assertTrue(0 == getEvaluator().getNumberResult("rint(-.2)")); | |||
} | |||
@Test | |||
public void testRintWithExpressions(){ | |||
assertTrue(-2 == getEvaluator().getNumberResult("rint(rint(-2.2))")); | |||
assertTrue(2 == getEvaluator().getNumberResult("rint(rint(rint(2.1)))")); | |||
} | |||
@Test(expected=InvalidEvaluatorFunctionArgumentException.class) | |||
public void testRintWithWrongInputCharacter(){ | |||
getEvaluator().getNumberResult("rint(a)"); | |||
} | |||
@Test(expected=UnsupportedEvaluatorFunctionException.class) | |||
public void testRintWithTwoArguments(){ | |||
getEvaluator().getNumberResult("rint(4.2, 3.1)"); | |||
} | |||
@Test(expected=UnsupportedEvaluatorFunctionException.class) | |||
public void testRintWithThreeArguments(){ | |||
getEvaluator().getNumberResult("rint(2.1, 2.2, 2.3)"); | |||
} | |||
@Test(expected=UndefinedExerciseVariableException.class) | |||
public void testRintWithMissingExerciseVariable(){ | |||
getEvaluator().getNumberResult("rint('[var=j]')"); | |||
} | |||
@Test(expected=UndefinedFillInVariableException.class) | |||
public void testRintWithMissingInput(){ | |||
getEvaluator().getNumberResult("rint('[pos=42]')"); | |||
} | |||
</syntaxhighlight> | |||
=== Hinweise === | === Hinweise === | ||
[[Kategorie:Evaluatorfunktion]] | [[Kategorie:Evaluatorfunktion]] |
Version vom 20. Juni 2017, 10:24 Uhr
Beschreibung
Die Funktion rint ermittelt eine Ganzzahl, die am nächsten an der übergebenen Zahl liegt. Die Funktion erwartet eine Zahl und gibt die nächst gelegenen Ganzzahl zurück
Syntax
rint(float zahl)
Parameter
- zahl - die Zahl, zu der die naheliegenste Ganzzahl ermittelt werden soll
Return Value
- Gibt die naheliegenste Ganzzahl zurück
Beispiele
Standardfälle
rint(12.4) --> returns 12 rint(15.678) --> returns 16
Benutzung mit Variablen
rint([pos=1]) rint([var=a])
JUnit Tests
@Test
public void testRint(){
assertTrue(12 == getEvaluator().getNumberResult("rint(12.4999)"));
assertTrue(13 == getEvaluator().getNumberResult("rint(12.500001)"));
assertTrue(12 == getEvaluator().getNumberResult("rint(12.5)"));
assertTrue(14 == getEvaluator().getNumberResult("rint(13.5)"));
assertTrue(-99 == getEvaluator().getNumberResult("rint(-99.4999)"));
assertTrue(-100== getEvaluator().getNumberResult("rint(-99.5999)"));
assertTrue(0 == getEvaluator().getNumberResult("rint(-0.00001)"));
assertTrue(0 == getEvaluator().getNumberResult("rint(0.00001)"));
}
@Test
public void testRintWithInput(){
assertTrue(5 == getEvaluator().getNumberResult("rint([pos=5])"));
assertTrue(1234 == getEvaluator().getNumberResult("rint([pos=1234])"));
}
@Test
public void testRintWithVariables(){
assertTrue(50 == getEvaluator().getNumberResult("rint([var=f1])"));
assertTrue(100 ==getEvaluator().getNumberResult("rint([var=h])"));
}
@Test
public void testRintWithPointNumbers(){
assertTrue(0 == getEvaluator().getNumberResult("rint(.2)"));
assertTrue(0 == getEvaluator().getNumberResult("rint(-.2)"));
}
@Test
public void testRintWithExpressions(){
assertTrue(-2 == getEvaluator().getNumberResult("rint(rint(-2.2))"));
assertTrue(2 == getEvaluator().getNumberResult("rint(rint(rint(2.1)))"));
}
@Test(expected=InvalidEvaluatorFunctionArgumentException.class)
public void testRintWithWrongInputCharacter(){
getEvaluator().getNumberResult("rint(a)");
}
@Test(expected=UnsupportedEvaluatorFunctionException.class)
public void testRintWithTwoArguments(){
getEvaluator().getNumberResult("rint(4.2, 3.1)");
}
@Test(expected=UnsupportedEvaluatorFunctionException.class)
public void testRintWithThreeArguments(){
getEvaluator().getNumberResult("rint(2.1, 2.2, 2.3)");
}
@Test(expected=UndefinedExerciseVariableException.class)
public void testRintWithMissingExerciseVariable(){
getEvaluator().getNumberResult("rint('[var=j]')");
}
@Test(expected=UndefinedFillInVariableException.class)
public void testRintWithMissingInput(){
getEvaluator().getNumberResult("rint('[pos=42]')");
}