Rint

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(Gleitkommazahl 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

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@BeforeClass
public static void beforeTest() {
	OMOBJ obj1 = new OMOBJ();
	OMOBJ obj2 = new OMOBJ();
	OMOBJ obj3 = new OMOBJ();
	OMOBJ obj4 = new OMOBJ();
	obj1.setOMF(OMCreator.createOMF(50.33333));
	obj2.setOMF(OMCreator.createOMF(99.993444));
	obj3.setOMF(OMCreator.createOMF(5.49999));
	obj4.setOMF(OMCreator.createOMF(1233.511111));

	fillIn.put(5, obj3);
	fillIn.put(1234, obj4);

	exerVar.put("f1", obj1);
	exerVar.put("h", obj2);
}

@Test
public void testRint1() {
	assertEquals(12, Evaluator.getNumberResult("rint(12.4999)", exerVar, fillIn), 0);
}

@Test
public void testRint2() {
	assertEquals(13, Evaluator.getNumberResult("rint(12.500001)", exerVar, fillIn), 0);
}

@Test
public void testRint3() {
	assertEquals(12, Evaluator.getNumberResult("rint(12.5)", exerVar, fillIn), 0);
}

@Test
public void testRint4() {
	assertEquals(14, Evaluator.getNumberResult("rint(13.5)", exerVar, fillIn), 0);
}

@Test
public void testRint5() {
	assertEquals(-99, Evaluator.getNumberResult("rint(-99.4999)", exerVar, fillIn), 0);
}

@Test
public void testRint6() {
	assertEquals(-100, Evaluator.getNumberResult("rint(-99.5999)", exerVar, fillIn), 0);
}

@Test
public void testRint7() {
	assertEquals(0, Evaluator.getNumberResult("rint(-0.00001)", exerVar, fillIn), 0);
}

@Test
public void testRint8() {
	assertEquals(0, Evaluator.getNumberResult("rint(0.00001)", exerVar, fillIn), 0);
}

@Test
public void testRintWithInput1() {
	assertEquals(5, Evaluator.getNumberResult("rint([pos=5])", exerVar, fillIn), 0);
}

@Test
public void testRintWithInput2() {
	assertEquals(1234, Evaluator.getNumberResult("rint([pos=1234])", exerVar, fillIn), 0);
}

@Test
public void testRintWithVariables1() {
	assertEquals(50, Evaluator.getNumberResult("rint([var=f1])", exerVar, fillIn), 0);
}

@Test
public void testRintWithVariables2() {
	assertEquals(100, Evaluator.getNumberResult("rint([var=h])", exerVar, fillIn), 0);
}

@Test
public void testRintWithPointNumbers1() {
	assertEquals(0, Evaluator.getNumberResult("rint(0.2)", exerVar, fillIn), 0);

}

@Test
public void testRintWithPointNumbers2() {
	assertEquals(0, Evaluator.getNumberResult("rint(-0.2)", exerVar, fillIn), 0);
}

@Test
public void testRintWithExpressions1() {
	assertEquals(-2, Evaluator.getNumberResult("rint(rint(-2.2))", exerVar, fillIn), 0);
}

@Test
public void testRintWithExpressions2() {
	assertEquals(2, Evaluator.getNumberResult("rint(rint(rint(2.1)))", exerVar, fillIn), 0);
}

@Test(expected = FunctionInvalidArgumentTypeException.class)
public void testRintWithWrongInputCharacter() {
	Evaluator.getNumberResult("rint(a)", exerVar, fillIn);
}

@Test(expected = FunctionInvalidNumberOfArgumentsException.class)
public void testRintWithTwoArguments() {
	Evaluator.getNumberResult("rint(4.2, 3.1)", exerVar, fillIn);
}

@Test(expected = FunctionInvalidNumberOfArgumentsException.class)
public void testRintWithThreeArguments() {
	Evaluator.getNumberResult("rint(2.1, 2.2, 2.3)", exerVar, fillIn);
}

@Test(expected = UndefinedExerciseVariableException.class)
public void testRintWithMissingExerciseVariable() {
	Evaluator.getNumberResult("rint('[var=j]')", exerVar, fillIn);
}

@Test(expected = UndefinedFillInVariableException.class)
public void testRintWithMissingInput() {
	Evaluator.getNumberResult("rint('[pos=42]')", exerVar, fillIn);
}