public void testSubtractElements() {
Int64Array array = AssertArrays.makeInt64ArrayEmpty();
array.subtractElements(0, AssertArrays.makeInt64Array12321(), -1, 0);
AssertArrays.assertEquals(AssertArrays.makeInt64ArrayEmpty(), array);
array = AssertArrays.makeInt64Array1();
array.subtractElements(0, Int64Array.make(new long[] {9}), -1, 0);
AssertArrays.assertEquals(Int64Array.make(new long[] {-8}), array);
array = Int64Array.make(5);
array.subtractElements(0, AssertArrays.makeInt64Array12321(), -1, 0);
AssertArrays.assertEquals(Int64Array.make(new long[] {-1, -2, -3, -2, -1}), array);
array = AssertArrays.makeInt64Array12345();
array.subtractElements(0, AssertArrays.makeInt64Array12321(), -1, 0);
AssertArrays.assertEquals(Int64Array.make(new long[] {0, 0, 0, 2, 4}), array);
array = AssertArrays.makeInt64Array12345();
array.subtractElements(2, AssertArrays.makeInt64Array12321(), -1, 0);
AssertArrays.assertEquals(Int64Array.make(new long[] {1, 2, 2, 2, 2}), array);
array = AssertArrays.makeInt64Array12345();
array.subtractElements(2, AssertArrays.makeInt64Array12321(), -1);
AssertArrays.assertEquals(Int64Array.make(new long[] {1, 2, 2, 2, 2}), array);
array = AssertArrays.makeInt64Array12345();
array.subtractElements(2, AssertArrays.makeInt64Array12321());
AssertArrays.assertEquals(Int64Array.make(new long[] {1, 2, 2, 2, 2}), array);
array = AssertArrays.makeInt64Array12345();
array.subtractElements(2, AssertArrays.makeInt64Array12321(), 2, 1);
AssertArrays.assertEquals(Int64Array.make(new long[] {1, 2, 1, 1, 5}), array);
// element arithmetic overflows
final long large = 0x6000000000000000L;
array = Int64Array.make(new long[] {large, large, -large});
array.subtractElements(0, Int64Array.make(new long[] {-large, large, large}));
final long result = 4611686018427387904L;
assertEquals(Int64Array.make(new long[] {-result, 0, result}), array);
// compatible array types
array = AssertArrays.makeInt64Array12345();
array.subtractElements(0, AssertArrays.makeInt8Array12321(), -1, 0);
AssertArrays.assertEquals(Int64Array.make(new long[] {0, 0, 0, 2, 4}), array);
// extend count beyond end of array
array = AssertArrays.makeInt64Array12345();
try {
array.subtractElements(2, AssertArrays.makeInt64Array12321(), 4, 1);
fail();
} catch (IndexOutOfBoundsException e) {
// expected
}
// incompatible arrays
array = AssertArrays.makeInt64ArrayEmpty();
try {
array.subtractElements(0, AssertArrays.makeIEEE32Array12321(), -1, 0);
fail("ieee");
} catch (UnsupportedOperationException e) {
// expected
}
}
