Acos: Unterschied zwischen den Versionen

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===Beispiele===
===Beispiele===
  acos(1)    --> returns 0
  acos(1)    --> returns 0
====JUnit Tests====
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<syntaxhighlight lang="java" class="mw-collapsible mw-collapsed" id="mw-customcollapsible-myDivision">
private double PI = Math.PI;
@Test
public void testAcos1() {
assertEquals(0, Evaluator.getNumberResult("acos('1')", exerciseVariableMap, fillInVariableMap), 0.0);
}
@Test
public void testAcos2() {
assertEquals(PI, Evaluator.getNumberResult("acos('-1')", exerciseVariableMap, fillInVariableMap), 0.0);
}
@Test
public void testAcos3() {
assertEquals(PI / 2, Evaluator.getNumberResult("acos('0')", exerciseVariableMap, fillInVariableMap), 0.000001);
}
@Test
public void testAcos4() {
assertEquals(PI / 2, Evaluator.getNumberResult("acos('0')", exerciseVariableMap, fillInVariableMap), 0.000001);
}
@Test
public void testAcos5() {
assertEquals(0.795398830184144, Evaluator.getNumberResult("acos(0.7)", exerciseVariableMap, fillInVariableMap),
0.0);
}
@Test
public void testAcosWithInput1() {
assertEquals(PI / 2, Evaluator.getNumberResult("acos([pos=1])", exerciseVariableMap, fillInVariableMap),
0.0001);
}
@Test
public void testAcosWithInput2() {
assertEquals(0, Evaluator.getNumberResult("acos([pos=2])", exerciseVariableMap, fillInVariableMap), 0.0);
}
@Test
public void testAcosWithInput3() {
assertEquals(PI, Evaluator.getNumberResult("acos([pos=3])", exerciseVariableMap, fillInVariableMap), 0.0);
}
@Test
public void testAcosWithVariables1() {
assertEquals(PI / 2, Evaluator.getNumberResult("acos([var=a])", exerciseVariableMap, fillInVariableMap),
0.000001);
}
@Test
public void testAcosWithVariables2() {
assertEquals(0, Evaluator.getNumberResult("acos([var=b])", exerciseVariableMap, fillInVariableMap), 0.0);
}
@Test
public void testAcosWithVariables3() {
assertEquals(PI, Evaluator.getNumberResult("acos([var=c])", exerciseVariableMap, fillInVariableMap), 0.0);
}
@Test
public void testAcosWithExpressions1() {
assertEquals(0.861722668365136,
Evaluator.getNumberResult("acos(acos(acos(0.7)))", exerciseVariableMap, fillInVariableMap), 0.0);
}
@Test
public void testAcosWithExpressions2() {
assertEquals(PI / 2, Evaluator.getNumberResult("acos(acos(1))", exerciseVariableMap, fillInVariableMap), 0.0001);
}
@Test(expected = FunctionInvalidArgumentTypeException.class)
public void TestAcosWithONECharacter() {
Evaluator.getNumberResult("acos(a)", exerciseVariableMap, fillInVariableMap);
fail();
}
@Test(expected = FunctionInvalidArgumentTypeException.class)
public void testAcosWithEmptyStringArgument() {
Evaluator.getNumberResult("acos('')", exerciseVariableMap, fillInVariableMap);
fail();
}
@Test(expected = FunctionInvalidNumberOfArgumentsException.class)
public void testAcosWithEmptyArgument() {
Evaluator.getNumberResult("acos()", exerciseVariableMap, fillInVariableMap);
fail();
}
@Test(expected = UndefinedExerciseVariableException.class)
public void testAcosWithoutExerciseVariable() {
Evaluator.getNumberResult("acos('[var=j]')", exerciseVariableMap, fillInVariableMap);
fail();
}
@Test(expected = UndefinedFillInVariableException.class)
public void testAcosWithoutInput() {
Evaluator.getNumberResult("acos('[pos=42]')", exerciseVariableMap, fillInVariableMap);
fail();
}
</syntaxhighlight>


===Hinweise===
===Hinweise===


[[Kategorie:Evaluatorfunktion]]
[[Kategorie:Evaluatorfunktion]]

Version vom 24. September 2018, 08:54 Uhr

Beschreibung

Der Arkuskosinus wird durch die Funktion acos beschrieben. Sie erwartet einen Parameter und gibt den Wert an der Stelle zurück.

Syntax

acos(Gleitkommazahl zahl)

Parameter

  • zahl - Ein Zahlenwert zwischen '-1' und '1'.

Return Value

  • Gibt den Wert des Arkuskosinus an der Stelle zurück.

Beispiele

acos(1)    --> returns 0

Hinweise

Abgerufen von „https://wiki.uni-due.de/jack/index.php?title=Acos&oldid=2708“