4 // Rodrigo Kumpera <rkumpera@novell.com>
6 // Copyright (C) 2010 Novell, Inc (http://www.novell.com)
10 using System.Numerics;
11 using NUnit.Framework;
14 namespace MonoTests.System.Numerics
17 public class BigIntegerTest
19 static byte[] huge_a = new byte[] {0x1D, 0x33, 0xFB, 0xFE, 0xB1, 0x2, 0x85, 0x44, 0xCA, 0xDC, 0xFB, 0x70, 0xD, 0x39, 0xB1, 0x47, 0xB6, 0xE6, 0xA2, 0xD1, 0x19, 0x1E, 0x9F, 0xE4, 0x3C, 0x1E, 0x16, 0x56, 0x13, 0x9C, 0x4D, 0xD3, 0x5C, 0x74, 0xC9, 0xBD, 0xFA, 0x56, 0x40, 0x58, 0xAC, 0x20, 0x6B, 0x55, 0xA2, 0xD5, 0x41, 0x38, 0xA4, 0x6D, 0xF6, 0x8C, };
21 static byte[] huge_b = new byte[] {0x96, 0x5, 0xDA, 0xFE, 0x93, 0x17, 0xC1, 0x93, 0xEC, 0x2F, 0x30, 0x2D, 0x8F, 0x28, 0x13, 0x99, 0x70, 0xF4, 0x4C, 0x60, 0xA6, 0x49, 0x24, 0xF9, 0xB3, 0x4A, 0x41, 0x67, 0xDC, 0xDD, 0xB1, 0xA5, 0xA6, 0xC0, 0x3D, 0x57, 0x9A, 0xCB, 0x29, 0xE2, 0x94, 0xAC, 0x6C, 0x7D, 0xEF, 0x3E, 0xC6, 0x7A, 0xC1, 0xA8, 0xC8, 0xB0, 0x20, 0x95, 0xE6, 0x4C, 0xE1, 0xE0, 0x4B, 0x49, 0xD5, 0x5A, 0xB7, };
23 static byte[] huge_add = new byte[] {0xB3, 0x38, 0xD5, 0xFD, 0x45, 0x1A, 0x46, 0xD8, 0xB6, 0xC, 0x2C, 0x9E, 0x9C, 0x61, 0xC4, 0xE0, 0x26, 0xDB, 0xEF, 0x31, 0xC0, 0x67, 0xC3, 0xDD, 0xF0, 0x68, 0x57, 0xBD, 0xEF, 0x79, 0xFF, 0x78, 0x3, 0x35, 0x7, 0x15, 0x95, 0x22, 0x6A, 0x3A, 0x41, 0xCD, 0xD7, 0xD2, 0x91, 0x14, 0x8, 0xB3, 0x65, 0x16, 0xBF, 0x3D, 0x20, 0x95, 0xE6, 0x4C, 0xE1, 0xE0, 0x4B, 0x49, 0xD5, 0x5A, 0xB7, };
26 static byte[][] add_a = new byte[][] {
32 static byte[][] add_b = new byte[][] {
38 static byte[][] add_c = new byte[][] {
45 public void TestAdd () {
46 for (int i = 0; i < add_a.Length; ++i) {
47 var a = new BigInteger (add_a [i]);
48 var b = new BigInteger (add_b [i]);
49 var c = new BigInteger (add_c [i]);
51 Assert.AreEqual (c, a + b, "#" + i + "a");
52 Assert.AreEqual (c, b + a, "#" + i + "b");
53 Assert.AreEqual (c, BigInteger.Add (a, b), "#" + i + "c");
54 Assert.AreEqual (add_c [i], (a + b).ToByteArray (), "#" + i + "d");
59 public void TestAdd2 () {
60 long[] values = new long [] { -100000000000L, -1000, -1, 0, 1, 1000, 100000000000L };
61 for (int i = 0; i < values.Length; ++i) {
62 for (int j = 0; j < values.Length; ++j) {
63 var a = new BigInteger (values [i]);
64 var b = new BigInteger (values [j]);
66 Assert.AreEqual (values [i] + values [j], (long)c, "#_" + i + "_" + j);
72 public void CompareOps () {
73 long[] values = new long [] { -100000000000L, -1000, -1, 0, 1, 1000, 100000000000L };
74 for (int i = 0; i < values.Length; ++i) {
75 for (int j = 0; j < values.Length; ++j) {
76 var a = new BigInteger (values [i]);
77 var b = new BigInteger (values [j]);
79 Assert.AreEqual (values [i].CompareTo (values [j]), a.CompareTo (b), "#a_" + i + "_" + j);
80 Assert.AreEqual (values [i].CompareTo (values [j]), BigInteger.Compare (a, b), "#b_" + i + "_" + j);
82 Assert.AreEqual (values [i] < values [j], a < b, "#c_" + i + "_" + j);
83 Assert.AreEqual (values [i] <= values [j], a <= b, "#d_" + i + "_" + j);
84 Assert.AreEqual (values [i] == values [j], a == b, "#e_" + i + "_" + j);
85 Assert.AreEqual (values [i] != values [j], a != b, "#f_" + i + "_" + j);
86 Assert.AreEqual (values [i] >= values [j], a >= b, "#g_" + i + "_" + j);
87 Assert.AreEqual (values [i] > values [j], a > b, "#h_" + i + "_" + j);
93 public void CompareOps2 () {
94 BigInteger a = new BigInteger (100000000000L);
95 BigInteger b = new BigInteger (28282828282UL);
97 Assert.IsTrue (a >= b, "#1");
98 Assert.IsTrue (a >= b, "#2");
99 Assert.IsFalse (a < b, "#3");
100 Assert.IsFalse (a <= b, "#4");
101 Assert.AreEqual (1, a.CompareTo (b), "#5");
105 public void CompareULong () {
106 long[] values = new long [] { -100000000000L, -1000, -1, 0, 1, 1000, 100000000000L, 0xAA00000000L };
107 ulong[] uvalues = new ulong [] {0, 1, 1000, 100000000000L, 999999, 28282828282, 0xAA00000000, ulong.MaxValue };
108 for (int i = 0; i < values.Length; ++i) {
109 for (int j = 0; j < uvalues.Length; ++j) {
110 var a = new BigInteger (values [i]);
112 var c = new BigInteger (b);
114 Assert.AreEqual (a.CompareTo (c), a.CompareTo (b), "#a_" + i + "_" + j);
116 Assert.AreEqual (a > c, a > b, "#b_" + i + "_" + j);
117 Assert.AreEqual (a < c, a < b, "#c_" + i + "_" + j);
118 Assert.AreEqual (a <= c, a <= b, "#d_" + i + "_" + j);
119 Assert.AreEqual (a == c, a == b, "#e_" + i + "_" + j);
120 Assert.AreEqual (a != c, a != b, "#f_" + i + "_" + j);
121 Assert.AreEqual (a >= c, a >= b, "#g_" + i + "_" + j);
127 public void TestEquals () {
128 var a = new BigInteger (10);
129 var b = new BigInteger (10);
130 var c = new BigInteger (-10);
132 Assert.AreEqual (a, b, "#1");
133 Assert.AreNotEqual (a, c, "#2");
134 Assert.AreNotEqual (a, 10, "#3");
138 public void ByteArrayCtor ()
141 new BigInteger (null);
143 } catch (ArgumentNullException) {}
145 Assert.AreEqual (0, (int)new BigInteger (new byte [0]), "#2");
149 public void IntCtorRoundTrip ()
151 int[] values = new int [] {
152 int.MinValue, -0x2F33BB, -0x1F33, -0x33, 0, 0x33,
153 0x80, 0x8190, 0xFF0011, 0x1234, 0x11BB99, 0x44BB22CC,
155 foreach (var val in values) {
156 var a = new BigInteger (val);
157 var b = new BigInteger (a.ToByteArray ());
159 Assert.AreEqual (val, (int)a, "#a_" + val);
160 Assert.AreEqual (val, (int)b, "#b_" + val);
165 public void LongCtorRoundTrip ()
167 long[] values = new long [] {
168 0, long.MinValue, long.MaxValue, -1, 1L + int.MaxValue, -1L + int.MinValue, 0x1234, 0xFFFFFFFFL, 0x1FFFFFFFFL, -0xFFFFFFFFL, -0x1FFFFFFFFL,
169 0x100000000L, -0x100000000L, 0x100000001L, -0x100000001L };
170 foreach (var val in values) {
171 var a = new BigInteger (val);
172 var b = new BigInteger (a.ToByteArray ());
174 Assert.AreEqual (val, (long)a, "#a_" + val);
175 Assert.AreEqual (val, (long)b, "#b_" + val);
180 public void ByteArrayCtorRoundTrip ()
182 var arr = new byte [] { 1,2,3,4,5,6,7,8,9 };
183 Assert.AreEqual (arr, new BigInteger (arr).ToByteArray (), "#1");
185 arr = new byte [] { 1,2,3,4,5,6,7,8,0xFF, 0x0};
186 Assert.AreEqual (arr, new BigInteger (arr).ToByteArray (), "#2");
188 arr = new byte [] { 1,2,3,4,5,6,7,8,9, 0xF0 };
189 Assert.AreEqual (arr, new BigInteger (arr).ToByteArray (), "#3");
191 arr = new byte [] { 1};
192 Assert.AreEqual (arr, new BigInteger (arr).ToByteArray (), "#4");
194 arr = new byte [] { 1,2 };
195 Assert.AreEqual (arr, new BigInteger (arr).ToByteArray (), "#5");
197 arr = new byte [] { 1,2,3 };
198 Assert.AreEqual (arr, new BigInteger (arr).ToByteArray (), "#6");
200 arr = new byte [] { 1,2,3,4 };
201 Assert.AreEqual (arr, new BigInteger (arr).ToByteArray (), "#7");
203 arr = new byte [] { 1,2,3,4,5 };
204 Assert.AreEqual (arr, new BigInteger (arr).ToByteArray (), "#8");
206 arr = new byte [] { 1,2,3,4,5,6 };
207 Assert.AreEqual (arr, new BigInteger (arr).ToByteArray (), "#9");
209 arr = new byte [] { 1,2,3,4,5,6,7 };
210 Assert.AreEqual (arr, new BigInteger (arr).ToByteArray (), "#10");
212 arr = new byte [] { 1,2,3,4,5 };
213 Assert.AreEqual (arr, new BigInteger (arr).ToByteArray (), "#11");
215 arr = new byte [] { 0 };
216 Assert.AreEqual (arr, new BigInteger (arr).ToByteArray (), "#12");
218 arr = new byte [] { 0xFF, 00 };
219 Assert.AreEqual (arr, new BigInteger (arr).ToByteArray (), "#13");
221 arr = new byte [] { 1, 0, 0, 0, 0, 0, };
222 Assert.AreEqual (new byte [1] {1}, new BigInteger (arr).ToByteArray (), "#14");
226 public void TestIntCtorProperties ()
228 BigInteger a = new BigInteger (10);
229 Assert.IsTrue (a.IsEven, "#1");
230 Assert.IsFalse (a.IsOne, "#2");
231 Assert.IsFalse (a.IsPowerOfTwo, "#3");
232 Assert.IsFalse (a.IsZero, "#4");
233 Assert.AreEqual (1, a.Sign, "#5");
235 Assert.IsFalse (new BigInteger (11).IsEven, "#6");
236 Assert.IsTrue (new BigInteger (1).IsOne, "#7");
237 Assert.IsTrue (new BigInteger (32).IsPowerOfTwo, "#8");
238 Assert.IsTrue (new BigInteger (0).IsZero, "#9");
239 Assert.AreEqual (0, new BigInteger (0).Sign, "#10");
240 Assert.AreEqual (-1, new BigInteger (-99999).Sign, "#11");
242 Assert.IsFalse (new BigInteger (0).IsPowerOfTwo, "#12");
243 Assert.IsFalse (new BigInteger (-16).IsPowerOfTwo, "#13");
244 Assert.IsTrue (new BigInteger (1).IsPowerOfTwo, "#14");
248 public void TestIntCtorToString ()
250 Assert.AreEqual ("5555", new BigInteger (5555).ToString (), "#1");
251 Assert.AreEqual ("-99999", new BigInteger (-99999).ToString (), "#2");
255 public void TestToIntOperator ()
258 int v = (int)new BigInteger (huge_a);
260 } catch (OverflowException) {}
263 int v = (int)new BigInteger (1L + int.MaxValue);
265 } catch (OverflowException) {}
268 int v = (int)new BigInteger (-1L + int.MinValue);
270 } catch (OverflowException) {}
272 Assert.AreEqual (int.MaxValue, (int)new BigInteger (int.MaxValue), "#4");
273 Assert.AreEqual (int.MinValue, (int)new BigInteger (int.MinValue), "#5");
278 public void TestToLongOperator ()
281 long v = (long)new BigInteger (huge_a);
283 } catch (OverflowException) {}
287 long v = (long)new BigInteger (new byte[] { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00 });
289 } catch (OverflowException) {}
291 //TODO long.MinValue - 1
293 long v = (long)new BigInteger (new byte[] { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0xFF });
295 } catch (OverflowException) {}
297 Assert.AreEqual (long.MaxValue, (long)new BigInteger (long.MaxValue), "#4");
298 Assert.AreEqual (long.MinValue, (long)new BigInteger (long.MinValue), "#5");
302 public void TestIntCtorToByteArray ()
304 Assert.AreEqual (new byte[] { 0xFF }, new BigInteger (-1).ToByteArray (), "#1");
305 Assert.AreEqual (new byte[] { 0xD4, 0xFE }, new BigInteger (-300).ToByteArray (), "#2");
306 Assert.AreEqual (new byte[] { 0x80, 0x00 }, new BigInteger (128).ToByteArray (), "#3");
307 Assert.AreEqual (new byte[] { 0x00, 0x60 }, new BigInteger (0x6000).ToByteArray (), "#4");
308 Assert.AreEqual (new byte[] { 0x00, 0x80, 0x00 }, new BigInteger (0x8000).ToByteArray (), "#5");
309 Assert.AreEqual (new byte[] { 0xDD, 0xBC, 0x00, 0x7A }, new BigInteger (0x7A00BCDD).ToByteArray (), "#6");
310 Assert.AreEqual (new byte[] { 0xFF, 0xFF, 0xFF, 0x7F }, new BigInteger (int.MaxValue).ToByteArray (), "#7");
311 Assert.AreEqual (new byte[] { 0x00, 0x00, 0x00, 0x80 }, new BigInteger (int.MinValue).ToByteArray (), "#8");
312 Assert.AreEqual (new byte[] { 0x01, 0x00, 0x00, 0x80 }, new BigInteger (int.MinValue + 1).ToByteArray (), "#9");
313 Assert.AreEqual (new byte[] { 0x7F }, new BigInteger (0x7F).ToByteArray (), "#10");
314 Assert.AreEqual (new byte[] { 0x45, 0xCC, 0xD0 }, new BigInteger (-0x2F33BB).ToByteArray (), "#11");
315 Assert.AreEqual (new byte[] { 0 }, new BigInteger (0).ToByteArray (), "#12");
319 public void TestLongCtorToByteArray ()
321 Assert.AreEqual (new byte[] { 0x01 }, new BigInteger (0x01L).ToByteArray (), "#1");
322 Assert.AreEqual (new byte[] { 0x02, 0x01 }, new BigInteger (0x0102L).ToByteArray (), "#2");
323 Assert.AreEqual (new byte[] { 0x03, 0x02, 0x01 }, new BigInteger (0x010203L).ToByteArray (), "#3");
324 Assert.AreEqual (new byte[] { 0x04, 0x03, 0x2, 0x01 }, new BigInteger (0x01020304L).ToByteArray (), "#4");
325 Assert.AreEqual (new byte[] { 0x05, 0x04, 0x03, 0x2, 0x01 }, new BigInteger (0x0102030405L).ToByteArray (), "#5");
326 Assert.AreEqual (new byte[] { 0x06, 0x05, 0x04, 0x03, 0x2, 0x01 }, new BigInteger (0x010203040506L).ToByteArray (), "#6");
327 Assert.AreEqual (new byte[] { 0x07, 0x06, 0x05, 0x04, 0x03, 0x2, 0x01 }, new BigInteger (0x01020304050607L).ToByteArray (), "#7");
328 Assert.AreEqual (new byte[] { 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x2, 0x01 }, new BigInteger (0x0102030405060708L).ToByteArray (), "#8");
330 Assert.AreEqual (new byte[] { 0xFF }, new BigInteger (-0x01L).ToByteArray (), "#1m");
331 Assert.AreEqual (new byte[] { 0xFE, 0xFE}, new BigInteger (-0x0102L).ToByteArray (), "#2m");
332 Assert.AreEqual (new byte[] { 0xFD, 0xFD, 0xFE }, new BigInteger (-0x010203L).ToByteArray (), "#3m");
333 Assert.AreEqual (new byte[] { 0xFC, 0xFC, 0xFD, 0xFE}, new BigInteger (-0x01020304L).ToByteArray (), "#4m");
334 Assert.AreEqual (new byte[] { 0xFB, 0xFB, 0xFC, 0xFD, 0xFE }, new BigInteger (-0x0102030405L).ToByteArray (), "#5m");
335 Assert.AreEqual (new byte[] { 0xFA, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE }, new BigInteger (-0x010203040506L).ToByteArray (), "#6m");
336 Assert.AreEqual (new byte[] { 0xF9, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE }, new BigInteger (-0x01020304050607L).ToByteArray (), "#7m");
337 Assert.AreEqual (new byte[] { 0xF8, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE }, new BigInteger (-0x0102030405060708L).ToByteArray (), "#8m");
340 Assert.AreEqual (new byte[] { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F }, new BigInteger (long.MaxValue).ToByteArray (), "#9");
341 Assert.AreEqual (new byte[] { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80 }, new BigInteger (long.MinValue).ToByteArray (), "#10");
343 Assert.AreEqual (new byte[] { 0xFF, 0xFF, 0xFF, 0x7F, 0xFF }, new BigInteger (-2147483649L).ToByteArray (), "11");