public virtual void test_combineLenient()
{
System.Func <double, double, double> @operator = (a, b) => a / b;
assertThat(DoubleArrayMath.combineLenient(ARRAY_1_2, ARRAY_3_4, @operator)).contains(1d / 3d, 2d / 4d);
assertThat(DoubleArrayMath.combineLenient(ARRAY_1_2, ARRAY_3, @operator)).contains(1d / 3d, 2d);
assertThat(DoubleArrayMath.combineLenient(ARRAY_3, ARRAY_1_2, @operator)).contains(3d / 1d, 2d);
}
public virtual void test_mutate()
{
System.Func <double, double> @operator = a => 1 / a;
double[] testArray = ARRAY_1_2.Clone();
DoubleArrayMath.mutate(testArray, @operator);
assertThat(testArray).contains(1d, 1d / 2d);
}
public virtual void test_sortPairs_doubledouble_2()
{
double[] keys = new double[] { 3d, 2d, 5d, 4d };
double[] values = new double[] { 6d, 4d, 10d, 8d };
DoubleArrayMath.sortPairs(keys, values);
assertThat(keys).containsExactly(2d, 3d, 4d, 5d);
assertThat(values).containsExactly(4d, 6d, 8d, 10d);
}
public virtual void test_sortPairs_doubleObject_2()
{
double[] keys = new double[] { 3d, 2d, 5d, 4d };
int?[] values = new int?[] { 6, 4, 10, 8 };
DoubleArrayMath.sortPairs(keys, values);
assertThat(keys).containsExactly(2d, 3d, 4d, 5d);
assertThat(values).containsExactly(4, 6, 8, 10);
}
public virtual void test_fuzzyEquals()
{
assertThat(DoubleArrayMath.fuzzyEquals(DoubleArrayMath.EMPTY_DOUBLE_ARRAY, ARRAY_0_0, 1e-2)).False;
assertThat(DoubleArrayMath.fuzzyEquals(ARRAY_0_0, ARRAY_0_0, 1e-2)).True;
assertThat(DoubleArrayMath.fuzzyEquals(ARRAY_1_2, ARRAY_1_2, 1e-2)).True;
assertThat(DoubleArrayMath.fuzzyEquals(ARRAY_1_2, ARRAY_1_2B, 1e-2)).True;
assertThat(DoubleArrayMath.fuzzyEquals(ARRAY_1_2, ARRAY_1_2B, 1e-3)).True;
assertThat(DoubleArrayMath.fuzzyEquals(ARRAY_1_2, ARRAY_1_2B, 1e-4)).False;
}
/// <summary>
/// Multiplies values in two arrays, mutating the first array.
/// <para>
/// The arrays must be the same length. Each value in {@code array} is multiplied by the value at the
/// corresponding index in {@code arrayToMultiplyBy}.
///
/// </para>
/// </summary>
/// <param name="array"> the array to mutate </param>
/// <param name="arrayToMultiplyBy"> the array containing values to multiply by </param>
public static void mutateByMultiplication(double[] array, double[] arrayToMultiplyBy)
{
int length = DoubleArrayMath.length(array, arrayToMultiplyBy);
for (int i = 0; i < length; i++)
{
array[i] *= arrayToMultiplyBy[i];
}
}
/// <summary>
/// Adds values in two arrays together, mutating the first array.
/// <para>
/// The arrays must be the same length. Each value in {@code arrayToAdd} is added to the value at the
/// corresponding index in {@code array}.
///
/// </para>
/// </summary>
/// <param name="array"> the array to mutate </param>
/// <param name="arrayToAdd"> the array containing values to add </param>
public static void mutateByAddition(double[] array, double[] arrayToAdd)
{
int length = DoubleArrayMath.length(array, arrayToAdd);
for (int i = 0; i < length; i++)
{
array[i] += arrayToAdd[i];
}
}
/// <summary>
/// Combines two arrays, returning an array where each element is the combination of the two matching inputs.
/// <para>
/// Each element in the result will be the combination of the matching index in the two
/// input arrays using the operator. The two input arrays must have the same length.
/// </para>
/// <para>
/// The result is always a new array. The input arrays are not mutated.
///
/// </para>
/// </summary>
/// <param name="array1"> the first array </param>
/// <param name="array2"> the second array </param>
/// <param name="operator"> the operator to use when combining values </param>
/// <returns> an array combining the two input arrays using the operator </returns>
public static double[] combine(double[] array1, double[] array2, System.Func <double, double, double> @operator)
{
int length = DoubleArrayMath.length(array1, array2);
double[] result = new double[length];
for (int i = 0; i < length; i++)
{
result[i] = @operator(array1[i], array2[i]);
}
return(result);
}
public virtual void test_mutateByMultiplication_byArray()
{
double[] testArray = ARRAY_1_2.Clone();
DoubleArrayMath.mutateByMultiplication(testArray, new double[] { 4d, 5d });
assertThat(testArray).contains(4d, 10d);
}
public virtual void toObject()
{
assertThat(DoubleArrayMath.toObject(new double[] {})).isEqualTo(new double?[] {});
assertThat(DoubleArrayMath.toObject(new double[] { 1d, 2.5d })).isEqualTo(new double?[] { 1d, 2.5d });
}
public virtual void test_mutateByMultiplication_byConstant()
{
double[] testArray = ARRAY_1_2.Clone();
DoubleArrayMath.mutateByMultiplication(testArray, 4d);
assertThat(testArray).contains(4d, 8d);
}
public virtual void test_mutateByAddition_byArray()
{
double[] testArray = ARRAY_1_2.Clone();
DoubleArrayMath.mutateByAddition(testArray, new double[] { 2d, 3d });
assertThat(testArray).contains(3d, 5d);
}
public virtual void test_apply()
{
System.Func <double, double> @operator = a => 1 / a;
assertThat(DoubleArrayMath.apply(ARRAY_1_2, @operator)).contains(1d, 1d / 2d);
}
//-------------------------------------------------------------------------
public virtual void test_mutateByAddition_byConstant()
{
double[] testArray = ARRAY_1_2.Clone();
DoubleArrayMath.mutateByAddition(testArray, 2d);
assertThat(testArray).contains(3d, 4d);
}
public virtual void test_applyMultiplication()
{
assertThat(DoubleArrayMath.applyMultiplication(ARRAY_1_2, 4d)).contains(4d, 8d);
}
//-------------------------------------------------------------------------
public virtual void test_applyAddition()
{
assertThat(DoubleArrayMath.applyAddition(ARRAY_1_2, 2d)).contains(3d, 4d);
}
public virtual void test_combineByMultiplication()
{
assertThat(DoubleArrayMath.combineByMultiplication(ARRAY_1_2, ARRAY_3_4)).contains(3d, 8d);
assertThrowsIllegalArg(() => DoubleArrayMath.combineByMultiplication(ARRAY_1_2, ARRAY_3));
}
public virtual void test_combine()
{
System.Func <double, double, double> @operator = (a, b) => a / b;
assertThat(DoubleArrayMath.combine(ARRAY_1_2, ARRAY_3_4, @operator)).contains(1d / 3d, 2d / 4d);
assertThrowsIllegalArg(() => DoubleArrayMath.combine(ARRAY_1_2, ARRAY_3, @operator));
}
public virtual void test_sortPairs_doubleObject_sizeDifferent()
{
double[] keys = new double[] { 3d, 2d, 5d, 4d };
int?[] values = new int?[] { 6, 4 };
assertThrowsIllegalArg(() => DoubleArrayMath.sortPairs(keys, values));
}
//-------------------------------------------------------------------------
public virtual void test_sum()
{
assertThat(DoubleArrayMath.sum(ARRAY_1_2)).isEqualTo(3d);
}
public virtual void test_mutateByMultiplication_byArray_sizeDifferent()
{
double[] testArray = ARRAY_1_2.Clone();
assertThrowsIllegalArg(() => DoubleArrayMath.mutateByMultiplication(testArray, new double[] { 4d }));
}