3 // Jon Guymon (guymon@slackworks.com)
4 // Pedro Martínez Juliá (yoros@wanadoo.es)
7 // Copyright (C) 2003 Pedro Martínez Juliá <yoros@wanadoo.es>
8 // Copyright (C) 2004 Novell (http://www.novell.com)
12 using NUnit.Framework;
14 namespace MonoTests.System
19 private static double double_epsilon =
22 static double x = 0.1234;
23 static double y = 12.345;
26 public void TestDecimalAbs ()
30 Assert.IsTrue (9.0M == Math.Abs (a), "#1");
31 Assert.IsTrue (Decimal.MaxValue == Math.Abs (Decimal.MaxValue), "#2");
32 Assert.IsTrue (Decimal.MaxValue == Math.Abs (Decimal.MinValue), "#3");
33 Assert.IsTrue (Decimal.Zero == Math.Abs (Decimal.Zero), "#4");
34 Assert.IsTrue (Decimal.One == Math.Abs (Decimal.One), "#5");
35 Assert.IsTrue (Decimal.One == Math.Abs (Decimal.MinusOne), "#6");
39 public void TestDoubleAbs ()
43 Assert.IsTrue (9.0D == Math.Abs (a), "#1");
44 Assert.IsTrue (0.0D == Math.Abs (0.0D), "#2");
45 Assert.IsTrue (Double.MaxValue == Math.Abs (Double.MaxValue), "#3");
46 Assert.IsTrue (Double.MaxValue == Math.Abs (Double.MinValue), "#4");
47 Assert.IsTrue (Double.IsPositiveInfinity (Math.Abs (Double.PositiveInfinity)), "#5");
48 Assert.IsTrue (Double.IsPositiveInfinity (Math.Abs (Double.NegativeInfinity)), "#6");
49 Assert.IsTrue (Double.IsNaN (Math.Abs (Double.NaN)), "#7");
53 public void TestFloatAbs ()
57 Assert.IsTrue (9.0F == Math.Abs (a), "#1");
58 Assert.IsTrue (0.0F == Math.Abs (0.0F), "#2");
59 Assert.IsTrue (Single.MaxValue == Math.Abs (Single.MaxValue), "#3");
60 Assert.IsTrue (Single.MaxValue == Math.Abs (Single.MinValue), "#4");
61 Assert.IsTrue (Single.PositiveInfinity == Math.Abs (Single.PositiveInfinity), "#5");
62 Assert.IsTrue (Single.PositiveInfinity == Math.Abs (Single.NegativeInfinity), "#6");
63 Assert.IsTrue (Single.IsNaN (Math.Abs (Single.NaN)), "#7");
67 public void TestLongAbs ()
70 long b = Int64.MinValue;
72 Assert.IsTrue (9L == Math.Abs (a), "#1");
76 } catch (Exception e) {
77 Assert.AreEqual (typeof (OverflowException), e.GetType (), "#3");
79 Assert.IsTrue (Int64.MaxValue == Math.Abs (Int64.MaxValue), "#4");
83 public void TestIntAbs ()
86 int b = Int32.MinValue;
88 Assert.IsTrue (9 == Math.Abs (a), "#1");
92 } catch (Exception e) {
93 Assert.AreEqual (typeof (OverflowException), e.GetType (), "#3");
95 Assert.IsTrue (Int32.MaxValue == Math.Abs (Int32.MaxValue), "#4");
99 public void TestSbyteAbs ()
102 sbyte b = SByte.MinValue;
104 Assert.IsTrue (9 == Math.Abs (a), "#1");
108 } catch (Exception e) {
109 Assert.AreEqual (typeof (OverflowException), e.GetType (), "#3");
111 Assert.IsTrue (SByte.MaxValue == Math.Abs (SByte.MaxValue), "#4");
115 public void TestShortAbs ()
118 short b = Int16.MinValue;
120 Assert.IsTrue (9 == Math.Abs (a), "#1");
124 } catch (Exception e) {
125 Assert.AreEqual (typeof (OverflowException), e.GetType (), "#3");
127 Assert.IsTrue (Int16.MaxValue == Math.Abs (Int16.MaxValue), "#4");
131 public void TestAcos ()
133 double a = Math.Acos (x);
134 double b = 1.4470809809523457;
136 bool regularTest = (Math.Abs (a - b) <= double_epsilon);
139 // On MacOS X libc acos (0.1234) returns
140 // 1.4470809809523455 (hex 0x3ff7273e62fda9ab) instead
141 // of 1.4470809809523457 (hex 0x3ff7273e62fda9ac)
143 // For now, let it go
145 if (a == 1.4470809809523455)
149 Assert.IsTrue (regularTest, a.ToString ("G99") + " != " + b.ToString ("G99"));
151 Assert.IsTrue (double.IsNaN (Math.Acos (-1.01D)));
152 Assert.IsTrue (double.IsNaN (Math.Acos (1.01D)));
153 Assert.IsTrue (double.IsNaN (Math.Acos (Double.MinValue)));
154 Assert.IsTrue (double.IsNaN (Math.Acos (Double.MaxValue)));
155 Assert.IsTrue (double.IsNaN (Math.Acos (Double.NegativeInfinity)));
156 Assert.IsTrue (double.IsNaN (Math.Acos (Double.PositiveInfinity)));
160 public void TestAsin ()
162 double a = Math.Asin (x);
163 double b = 0.12371534584255098;
165 Assert.IsTrue ((Math.Abs (a - b) <= double_epsilon), a.ToString ("G99")
166 + " != " + b.ToString ("G99"));
167 Assert.IsTrue (double.IsNaN (Math.Asin (-1.01D)));
168 Assert.IsTrue (double.IsNaN (Math.Asin (1.01D)));
169 Assert.IsTrue (double.IsNaN (Math.Asin (Double.MinValue)));
170 Assert.IsTrue (double.IsNaN (Math.Asin (Double.MaxValue)));
171 Assert.IsTrue (double.IsNaN (Math.Asin (Double.NegativeInfinity)));
172 Assert.IsTrue (double.IsNaN (Math.Asin (Double.PositiveInfinity)));
176 public void TestAtan ()
178 double a = Math.Atan (x);
179 double b = 0.12277930094473837;
180 double c = 1.5707963267948966;
181 double d = -1.5707963267948966;
183 Assert.IsTrue ((Math.Abs (a - b) <= double_epsilon), "#1: " + a.ToString ("G99")
184 + " != " + b.ToString ("G99"));
185 Assert.IsTrue (double.IsNaN (Math.Atan (double.NaN)), "should return NaN");
186 Assert.IsTrue (Math.Abs ((double) Math.Atan (double.PositiveInfinity) - c) <= 0.0000000000000001,
187 "#2: " + Math.Atan (double.PositiveInfinity).ToString ("G99") + " != " + c.ToString ("G99"));
188 Assert.IsTrue (Math.Abs ((double) Math.Atan (double.NegativeInfinity) - d) <= 0.0000000000000001,
189 "#3: " + Math.Atan (double.NegativeInfinity).ToString ("G99") + " != " + d.ToString ("G99"));
193 public void TestAtan2 ()
195 double a = Math.Atan2 (x, y);
196 double b = 0.0099956168687207747;
198 Assert.IsTrue ((Math.Abs (a - b) <= double_epsilon), a.ToString ("G99")
199 + " != " + b.ToString ("G99"));
200 Assert.IsTrue (double.IsNaN (Math.Acos (-2D)));
201 Assert.IsTrue (double.IsNaN (Math.Acos (2D)));
204 // The following test is for methods that are in ECMA but they are
205 // not implemented in MS.NET. I leave them commented.
207 public void TestBigMul () {
208 int a = int.MaxValue;
209 int b = int.MaxValue;
211 Assert(((long)a * (long)b) == Math.BigMul(a,b));
216 public void TestCos ()
218 double a = Math.Cos (x);
219 double b = 0.99239587670489104;
221 Assert.IsTrue ((Math.Abs (a - b) <= double_epsilon), a.ToString ("G99")
222 + " != " + b.ToString ("G99"));
223 Assert.IsTrue (double.IsNaN (Math.Cos (Double.NaN)));
224 Assert.IsTrue (double.IsNaN (Math.Cos (Double.NegativeInfinity)));
225 Assert.IsTrue (double.IsNaN (Math.Cos (Double.PositiveInfinity)));
229 public void TestCosh ()
231 double a = Math.Cosh (x);
232 double b = 1.0076234465130722;
234 Assert.IsTrue ((Math.Abs (a - b) <= double_epsilon), a.ToString ("G99")
235 + " != " + b.ToString ("G99"));
236 Assert.IsTrue (Math.Cosh (double.NegativeInfinity) == double.PositiveInfinity);
237 Assert.IsTrue (Math.Cosh (double.PositiveInfinity) == double.PositiveInfinity);
238 Assert.IsTrue (double.IsNaN (Math.Cosh (double.NaN)));
241 // The following test is for methods that are in ECMA but they are
242 // not implemented in MS.NET. I leave them commented.
244 public void TestIntDivRem () {
247 int div = 0, rem = 0;
249 div = Math.DivRem (a, b, out rem);
251 Assert.IsTrue (rem == 1);
252 Assert.IsTrue (div == 2);
255 public void TestLongDivRem () {
258 long div = 0, rem = 0;
260 div = Math.DivRem (a, b, out rem);
262 Assert.IsTrue (rem == 1);
263 Assert.IsTrue (div == 2);
268 public void TestSin ()
270 double a = Math.Sin (x);
271 double b = 0.12308705821137626;
273 Assert.IsTrue ((Math.Abs (a - b) <= double_epsilon), a.ToString ("G99")
274 + " != " + b.ToString ("G99"));
275 Assert.IsTrue (double.IsNaN (Math.Sin (Double.NaN)));
276 Assert.IsTrue (double.IsNaN (Math.Sin (Double.NegativeInfinity)));
277 Assert.IsTrue (double.IsNaN (Math.Sin (Double.PositiveInfinity)));
281 public void TestSinh ()
283 double a = Math.Sinh (x);
284 double b = 0.12371341868561381;
286 Assert.IsTrue (Math.Abs (a - b) <= 0.0000000000000001, a.ToString ("G99")
287 + " != " + b.ToString ("G99"));
288 Assert.IsTrue (double.IsNaN (Math.Sinh (Double.NaN)));
289 Assert.IsTrue (double.IsNegativeInfinity (Math.Sinh (Double.NegativeInfinity)));
290 Assert.IsTrue (double.IsPositiveInfinity (Math.Sinh (Double.PositiveInfinity)));
294 public void TestTan ()
296 double a = Math.Tan (x);
297 double b = 0.12403019913793806;
299 Assert.IsTrue ((Math.Abs (a - b) <= double_epsilon), a.ToString ("G99")
300 + " != " + b.ToString ("G99"));
301 Assert.IsTrue (Double.IsNaN (Math.Tan (Double.NaN)));
302 Assert.IsTrue (Double.IsNaN (Math.Tan (Double.PositiveInfinity)));
303 Assert.IsTrue (Double.IsNaN (Math.Tan (Double.NegativeInfinity)));
307 public void TestTanh ()
309 double a = Math.Tanh (x);
310 double b = 0.12277743150353424;
312 Assert.IsTrue ((Math.Abs (a - b) <= double_epsilon), a.ToString ("G99")
313 + " != " + b.ToString ("G99"));
314 Assert.IsTrue (Double.IsNaN (Math.Tanh (Double.NaN)),
315 "Tanh(NaN) should be NaN");
316 Assert.IsTrue (1 == Math.Tanh (Double.PositiveInfinity),
317 "Tanh(+Infinity) should be 1");
318 Assert.IsTrue (-1 == Math.Tanh (Double.NegativeInfinity),
319 "Tanh(-Infinity) should be -1");
323 public void TestSqrt ()
325 double a = Math.Sqrt (x);
326 double b = 0.35128336140500593;
328 Assert.IsTrue ((Math.Abs (a - b) <= double_epsilon), a.ToString ("G99")
329 + " != " + b.ToString ("G99"));
330 Assert.IsTrue (Double.IsNaN (Math.Sqrt (Double.NaN)));
331 Assert.IsTrue (Double.IsPositiveInfinity (Math.Sqrt (Double.PositiveInfinity)));
332 Assert.IsTrue (Double.IsNaN (Math.Sqrt (Double.NegativeInfinity)));
336 public void TestExp ()
338 double a = Math.Exp (x);
339 double b = 1.1313368651986859;
341 Assert.IsTrue ((Math.Abs (a - b) <= double_epsilon), a.ToString ("G99")
342 + " != " + b.ToString ("G99"));
343 Assert.IsTrue (double.IsNaN (Math.Exp (double.NaN)));
344 Assert.IsTrue (Math.Exp (double.NegativeInfinity) == 0);
345 Assert.IsTrue (Math.Exp (double.PositiveInfinity) == double.PositiveInfinity);
349 public void TestCeiling ()
353 double a = Math.Ceiling (1.5);
357 Assert.IsTrue ((Math.Abs (a - b) <= double_epsilon), a.ToString ("G99")
358 + " != " + b.ToString ("G99"));
360 Assert.IsTrue (Math.Ceiling (double.NegativeInfinity) == double.NegativeInfinity);
362 Assert.IsTrue (Math.Ceiling (double.PositiveInfinity) == double.PositiveInfinity);
364 Assert.IsTrue (double.IsNaN (Math.Ceiling (double.NaN)));
367 Assert.IsTrue (Double.MaxValue == Math.Ceiling (Double.MaxValue));
370 Assert.IsTrue (Double.MinValue == Math.Ceiling (Double.MinValue));
371 } catch (Exception e) {
372 Assert.Fail ("Unexpected Exception at iTest=" + iTest + ": " + e);
377 public void TestDecimalCeiling()
379 decimal a = Math.Ceiling(1.5M);
382 Assert.IsTrue (a == b, "#1");
383 Assert.IsTrue (Decimal.MaxValue == Math.Ceiling(Decimal.MaxValue), "#2");
384 Assert.IsTrue (Decimal.MinValue == Math.Ceiling(Decimal.MinValue), "#3");
388 public void TestFloor ()
390 double a = Math.Floor (1.5);
393 Assert.IsTrue ((Math.Abs (a - b) <= double_epsilon), a.ToString ("G99")
394 + " != " + b.ToString ("G99"));
395 Assert.IsTrue (Math.Floor (double.NegativeInfinity) == double.NegativeInfinity);
396 Assert.IsTrue (Math.Floor (double.PositiveInfinity) == double.PositiveInfinity);
397 Assert.IsTrue (double.IsNaN (Math.Floor (double.NaN)));
399 Assert.IsTrue (Double.MaxValue == Math.Floor (Double.MaxValue));
401 Assert.IsTrue (Double.MinValue == Math.Floor (Double.MinValue));
405 public void TestIEEERemainder ()
407 double a = Math.IEEERemainder (y, x);
408 double b = 0.0050000000000010592;
410 Assert.IsTrue ((Math.Abs (a - b) <= double_epsilon), a.ToString ("G99")
411 + " != " + b.ToString ("G99"));
413 Assert.IsTrue (double.IsNaN (Math.IEEERemainder (y, 0)), "Positive 0");
415 // http://www.obtuse.com/resources/negative_zero.html
416 double n0 = BitConverter.Int64BitsToDouble (Int64.MinValue);
417 Assert.IsTrue (double.IsNaN (Math.IEEERemainder (n0, 0)), "Negative 0");
419 // the "zero" remainder of negative number is negative
420 long result = BitConverter.DoubleToInt64Bits (Math.IEEERemainder (-1, 1));
421 Assert.AreEqual (Int64.MinValue, result, "Negative Dividend");
425 public void TestLog ()
427 double a = Math.Log (y);
428 double b = 2.513251122797143;
430 Assert.IsTrue ((Math.Abs (a - b) <= double_epsilon), a.ToString ("G99")
431 + " != " + b.ToString ("G99"));
432 Assert.IsTrue (double.IsNaN (Math.Log (-1)));
433 Assert.IsTrue (double.IsNaN (Math.Log (double.NaN)));
435 // MS docs say this should be PositiveInfinity
436 Assert.IsTrue (Math.Log (0) == double.NegativeInfinity);
437 Assert.IsTrue (Math.Log (double.PositiveInfinity) == double.PositiveInfinity);
441 public void TestLog2 ()
443 double a = Math.Log (x, y);
444 double b = -0.83251695325303621;
446 Assert.IsTrue ((Math.Abs (a - b) <= 1e-14), a + " != " + b
447 + " because diff is " + Math.Abs (a - b));
448 Assert.IsTrue (double.IsNaN (Math.Log (-1, y)));
449 Assert.IsTrue (double.IsNaN (Math.Log (double.NaN, y)));
450 Assert.IsTrue (double.IsNaN (Math.Log (x, double.NaN)));
451 Assert.IsTrue (double.IsNaN (Math.Log (double.NegativeInfinity, y)));
452 Assert.IsTrue (double.IsNaN (Math.Log (x, double.NegativeInfinity)));
453 Assert.IsTrue (double.IsNaN (Math.Log (double.PositiveInfinity, double.PositiveInfinity)));
454 Assert.IsTrue (double.IsNaN (Math.Log (2, 1)));
456 // MS docs say this should be PositiveInfinity
457 Assert.IsTrue (Math.Log (0, y) == double.NegativeInfinity);
458 Assert.IsTrue (Math.Log (double.PositiveInfinity, y) == double.PositiveInfinity);
460 Assert.IsTrue (Double.IsNaN (Math.Log (x, double.PositiveInfinity)));
464 public void TestLog10 ()
466 double a = Math.Log10 (x);
467 double b = -0.90868484030277719;
469 Assert.IsTrue ((Math.Abs (a - b) <= double_epsilon), a.ToString ("G99")
470 + " != " + b.ToString ("G99"));
471 Assert.IsTrue (double.IsNaN (Math.Log10 (-1)));
472 Assert.IsTrue (double.IsNaN (Math.Log10 (double.NaN)));
474 // MS docs say this should be PositiveInfinity
475 Assert.IsTrue (Math.Log10 (0) == double.NegativeInfinity);
476 Assert.IsTrue (Math.Log10 (double.PositiveInfinity) == double.PositiveInfinity);
481 public void TestPow ()
486 // It fails on Nexus 9 with
488 // 1.3636094460602122 != 1.3636094460602119
490 // when using double_epsilon. Precision differs between different ARM CPUs, so we
491 // will just use a more conservative value
492 precision = double_epsilon * 10;
494 precision = double_epsilon;
497 /* documentation cases : https://msdn.microsoft.com/en-us/library/system.math.pow%28v=vs.110%29.aspx */
499 /* x or y = NaN -> NaN */
500 Assert.IsNaN (Math.Pow ( double.NaN, double.NaN), "#1");
501 Assert.IsNaN (Math.Pow ( double.NaN, double.NegativeInfinity), "#2");
502 Assert.IsNaN (Math.Pow ( double.NaN, -2), "#2");
503 Assert.IsNaN (Math.Pow ( double.NaN, -1), "#3");
504 Assert.IsNaN (Math.Pow ( double.NaN, 0), "#4");
505 Assert.IsNaN (Math.Pow ( double.NaN, 1), "#5");
506 Assert.IsNaN (Math.Pow ( double.NaN, 2), "#6");
507 Assert.IsNaN (Math.Pow ( double.NaN, double.PositiveInfinity), "#7");
508 Assert.IsNaN (Math.Pow (double.NegativeInfinity, double.NaN), "#8");
509 Assert.IsNaN (Math.Pow ( -2, double.NaN), "#9");
510 Assert.IsNaN (Math.Pow ( -1, double.NaN), "#10");
511 Assert.IsNaN (Math.Pow ( 0, double.NaN), "#11");
512 Assert.IsNaN (Math.Pow ( 1, double.NaN), "#12");
513 Assert.IsNaN (Math.Pow ( 2, double.NaN), "#13");
514 Assert.IsNaN (Math.Pow (double.PositiveInfinity, double.NaN), "#14");
516 /* x = Any value except NaN; y = 0 -> 1 */
517 Assert.AreEqual ((double) 1, Math.Pow (2, 0), "#15");
519 /* x = NegativeInfinity; y < 0 -> 0 */
520 Assert.AreEqual ((double) 0, Math.Pow (double.NegativeInfinity, -2), "#16");
522 /* x = NegativeInfinity; y is a positive odd integer -> NegativeInfinity */
523 Assert.AreEqual (double.NegativeInfinity, Math.Pow (double.NegativeInfinity, 3), "#17");
525 /* x = NegativeInfinity; y is positive but not an odd integer -> PositiveInfinity */
526 Assert.AreEqual (double.PositiveInfinity, Math.Pow (double.NegativeInfinity, 2), "#18");
528 /* x < 0 but not NegativeInfinity; y is not an integer, NegativeInfinity, or PositiveInfinity -> NaN */
529 Assert.IsNaN (Math.Pow (-1, 2.5), "#19");
531 /* x = -1; y = NegativeInfinity or PositiveInfinity -> NaN */
532 Assert.IsNaN (Math.Pow (-1, double.PositiveInfinity), "#20");
533 Assert.IsNaN (Math.Pow (-1, double.NegativeInfinity), "#21");
535 /* -1 < x < 1; y = NegativeInfinity -> PositiveInfinity */
536 Assert.AreEqual (double.PositiveInfinity, Math.Pow (-0.5, double.NegativeInfinity), "#22");
537 Assert.AreEqual (double.PositiveInfinity, Math.Pow (+0.5, double.NegativeInfinity), "#23");
539 /* -1 < x < 1; y = PositiveInfinity -> 0 */
540 Assert.AreEqual ((double) 0, Math.Pow (-0.5, double.PositiveInfinity), "#24");
541 Assert.AreEqual ((double) 0, Math.Pow (+0.5, double.PositiveInfinity), "#25");
543 /* x < -1 or x > 1; y = NegativeInfinity -> 0 */
544 Assert.AreEqual ((double) 0, Math.Pow (-2, double.NegativeInfinity), "#26");
545 Assert.AreEqual ((double) 0, Math.Pow (+2, double.NegativeInfinity), "#27");
547 /* x < -1 or x > 1; y = PositiveInfinity -> PositiveInfinity */
548 Assert.AreEqual (double.PositiveInfinity, Math.Pow (-2, double.PositiveInfinity), "#28");
549 Assert.AreEqual (double.PositiveInfinity, Math.Pow (+2, double.PositiveInfinity), "#29");
551 /* x = 0; y < 0 -> PositiveInfinity */
552 Assert.AreEqual (double.PositiveInfinity, Math.Pow (0, -2), "#30");
554 /* x = 0; y > 0 -> PositiveInfinity */
555 Assert.AreEqual ((double) 0, Math.Pow (0, +2), "#31");
557 /* x = 1; y is any value except NaN -> 1 */
558 Assert.AreEqual ((double) 1, Math.Pow (1, double.NegativeInfinity), "#32");
559 Assert.AreEqual ((double) 1, Math.Pow (1, -2), "#33");
560 Assert.AreEqual ((double) 1, Math.Pow (1, 0), "#34");
561 Assert.AreEqual ((double) 1, Math.Pow (1, +2), "#35");
562 Assert.AreEqual ((double) 1, Math.Pow (1, double.PositiveInfinity), "#36");
564 /* x = PositiveInfinity; y < 0 -> 0 */
565 Assert.AreEqual ((double) 0, Math.Pow (double.PositiveInfinity, -1), "#37");
566 Assert.AreEqual ((double) 0, Math.Pow (double.PositiveInfinity, -2), "#38");
568 /* x = PositiveInfinity; y > 0 -> PositiveInfinity */
569 Assert.AreEqual (double.PositiveInfinity, Math.Pow (double.PositiveInfinity, 1), "#39");
570 Assert.AreEqual (double.PositiveInfinity, Math.Pow (double.PositiveInfinity, 2), "#40");
574 double a = Math.Pow (y, x);
575 double b = 1.363609446060212;
577 Assert.IsTrue (Math.Abs (a - b) <= precision, "#41 " + a.ToString ("G99") + " != " + b.ToString ("G99") + " +/- " + precision.ToString ("G99"));
578 Assert.AreEqual (double.NegativeInfinity, Math.Pow (double.NegativeInfinity, 1), "#42");
579 Assert.AreEqual (double.PositiveInfinity, Math.Pow (double.NegativeInfinity, 2), "#43");
581 Assert.AreEqual (Math.Pow (double.PositiveInfinity, double.NegativeInfinity), (double) 0, "#44");
583 Assert.AreEqual ((double) 1, Math.Pow (-1, Double.MaxValue), "#45");
584 Assert.AreEqual ((double) 1, Math.Pow (-1, Double.MinValue), "#46");
585 Assert.AreEqual ((double) 0, Math.Pow (Double.MinValue, Double.MinValue), "#47");
586 Assert.AreEqual (double.PositiveInfinity, Math.Pow (Double.MinValue, Double.MaxValue), "#48");
588 double infinity = double.PositiveInfinity;
589 Assert.AreEqual ((double) 0, Math.Pow ( 0.5, infinity), "#49");
590 Assert.AreEqual ( infinity, Math.Pow ( 0.5, -infinity), "#50");
591 Assert.AreEqual ( infinity, Math.Pow ( 2, infinity), "#51");
592 Assert.AreEqual ((double) 0, Math.Pow ( 2, -infinity), "#52");
593 Assert.AreEqual ((double) 1, Math.Pow ( infinity, 0), "#53");
594 Assert.AreEqual ((double) 1, Math.Pow (-infinity, 0), "#54");
598 public void TestByteMax ()
603 Assert.IsTrue (b == Math.Max (a, b), "#1");
604 Assert.IsTrue (b == Math.Max (b, a), "#2");
608 public void TestDecimalMax ()
613 Assert.IsTrue (b == Math.Max (a, b), "#1");
614 Assert.IsTrue (b == Math.Max (b, a), "#2");
618 public void TestDoubleMax ()
623 Assert.IsTrue (b == Math.Max (a, b), "#1");
624 Assert.IsTrue (b == Math.Max (b, a), "#2");
626 Assert.IsTrue (Double.IsNaN (Math.Max (Double.NaN, Double.NaN)), "#3");
627 Assert.IsTrue (Double.IsNaN (Math.Max (Double.NaN, a)), "#4");
628 Assert.IsTrue (Double.IsNaN (Math.Max (b, Double.NaN)), "#5");
632 public void TestFloatMax ()
637 Assert.IsTrue (b == Math.Max (a, b), "#1");
638 Assert.IsTrue (b == Math.Max (b, a), "#2");
639 Assert.IsTrue (Single.IsNaN (Math.Max (Single.NaN, Single.NaN)), "#3");
640 Assert.IsTrue (Single.IsNaN (Math.Max (Single.NaN, a)), "#4");
641 Assert.IsTrue (Single.IsNaN (Math.Max (b, Single.NaN)), "#5");
645 public void TestIntMax ()
652 Assert.AreEqual (b, Math.Max (a, b), "#1");
653 Assert.AreEqual (b, Math.Max (b, a), "#2");
654 Assert.AreEqual (c, Math.Max (c, d), "#3");
655 Assert.AreEqual (c, Math.Max (d, c), "#4");
659 public void TestLongMax ()
664 Assert.IsTrue (b == Math.Max (a, b), "#1");
665 Assert.IsTrue (b == Math.Max (b, a), "#2");
669 public void TestSbyteMax ()
674 Assert.IsTrue (b == Math.Max (a, b), "#1");
675 Assert.IsTrue (b == Math.Max (b, a), "#2");
679 public void TestShortMax ()
684 Assert.IsTrue (b == Math.Max (a, b), "#1");
685 Assert.IsTrue (b == Math.Max (b, a), "#2");
689 public void TestUintMax ()
694 Assert.IsTrue (b == Math.Max (a, b), "#1");
695 Assert.IsTrue (b == Math.Max (b, a), "#2");
699 public void TestUlongMax ()
704 Assert.IsTrue (b == Math.Max (a, b), "#1");
705 Assert.IsTrue (b == Math.Max (b, a), "#2");
709 public void TestUshortMax ()
714 Assert.IsTrue (b == Math.Max (a, b), "#1");
715 Assert.IsTrue (b == Math.Max (b, a), "#2");
719 public void TestByteMin ()
724 Assert.IsTrue (a == Math.Min (a, b), "#1");
725 Assert.IsTrue (a == Math.Min (b, a), "#2");
729 public void TestDecimalMin ()
734 Assert.IsTrue (a == Math.Min (a, b), "#1");
735 Assert.IsTrue (a == Math.Min (b, a), "#2");
739 public void TestDoubleMin ()
744 Assert.IsTrue (a == Math.Min (a, b), "#1");
745 Assert.IsTrue (a == Math.Min (b, a), "#2");
746 Assert.IsTrue (Double.IsNaN (Math.Min (Double.NaN, Double.NaN)), "#3");
747 Assert.IsTrue (Double.IsNaN (Math.Min (Double.NaN, a)), "#4");
748 Assert.IsTrue (Double.IsNaN (Math.Min (b, Double.NaN)), "#5");
752 public void TestFloatMin ()
757 Assert.IsTrue (a == Math.Min (a, b), "#1");
758 Assert.IsTrue (a == Math.Min (b, a), "#2");
759 Assert.IsTrue (Single.IsNaN (Math.Min (Single.NaN, Single.NaN)), "#3");
760 Assert.IsTrue (Single.IsNaN (Math.Min (Single.NaN, a)), "#4");
761 Assert.IsTrue (Single.IsNaN (Math.Min (b, Single.NaN)), "#5");
765 public void TestIntMin ()
770 Assert.IsTrue (a == Math.Min (a, b), "#1");
771 Assert.IsTrue (a == Math.Min (b, a), "#2");
775 public void TestLongMin ()
780 Assert.IsTrue (a == Math.Min (a, b), "#1");
781 Assert.IsTrue (a == Math.Min (b, a), "#2");
785 public void TestSbyteMin ()
790 Assert.IsTrue (a == Math.Min (a, b), "#1");
791 Assert.IsTrue (a == Math.Min (b, a), "#2");
795 public void TestShortMin ()
800 Assert.IsTrue (a == Math.Min (a, b), "#1");
801 Assert.IsTrue (a == Math.Min (b, a), "#2");
805 public void TestUintMin ()
810 Assert.IsTrue (a == Math.Min (a, b), "#1");
811 Assert.IsTrue (a == Math.Min (b, a), "#2");
815 public void TestUlongMin ()
820 Assert.IsTrue (a == Math.Min (a, b), "#1");
821 Assert.IsTrue (a == Math.Min (b, a), "#2");
825 public void TestUshortMin ()
830 Assert.IsTrue (a == Math.Min (a, b), "#1");
831 Assert.IsTrue (a == Math.Min (b, a), "#2");
835 public void TestDecimalRound ()
840 Assert.IsTrue (Math.Round (a) == 2, "#1");
841 Assert.IsTrue (Math.Round (b) == 2, "#2");
842 Assert.IsTrue (Decimal.MaxValue == Math.Round (Decimal.MaxValue), "#3");
843 Assert.IsTrue (Decimal.MinValue == Math.Round (Decimal.MinValue), "#4");
847 public void TestDecimalRound2 ()
852 Assert.AreEqual (3.4M, Math.Round (a, 1), "#1");
853 Assert.AreEqual (3.5M, Math.Round (b, 1), "#2");
857 public void TestDoubleRound ()
862 Assert.AreEqual (2D, Math.Round (a), "#1");
863 Assert.AreEqual (2D, Math.Round (b), "#2");
864 Assert.IsTrue (Double.MaxValue == Math.Round (Double.MaxValue), "#3");
865 Assert.IsTrue (Double.MinValue == Math.Round (Double.MinValue), "#4");
869 public void TestDoubleTruncate ()
875 Assert.AreEqual (1D, Math.Truncate (a), "#1");
876 Assert.AreEqual (2D, Math.Truncate (b), "#2");
878 Assert.AreEqual (-1D, Math.Truncate (a * -1D), "#3");
879 Assert.AreEqual (-2D, Math.Truncate (b * -1D), "#4");
881 Assert.AreEqual (0D, Math.Truncate (c), "#5");
883 Assert.IsTrue (Double.MaxValue == Math.Truncate (Double.MaxValue), "#6");
884 Assert.IsTrue (Double.MinValue == Math.Truncate (Double.MinValue), "#7");
888 public void TestDecimalTruncate ()
894 Assert.AreEqual (1M, Math.Truncate (a), "#1");
895 Assert.AreEqual (2M, Math.Truncate (b), "#2");
897 Assert.AreEqual (-1M, Math.Truncate (a * -1M), "#3");
898 Assert.AreEqual (-2M, Math.Truncate (b * -1M), "#4");
900 Assert.AreEqual (0M, Math.Truncate (c), "#5");
902 Assert.IsTrue (Decimal.MaxValue == Math.Truncate (Decimal.MaxValue), "#6");
903 Assert.IsTrue (Decimal.MinValue == Math.Truncate (Decimal.MinValue), "#7");
907 public void TestDoubleRound2 ()
912 Assert.AreEqual (3.4D, Math.Round (a, 1), "#1");
913 Assert.AreEqual (3.5D, Math.Round (b, 1), "#2");
914 Assert.AreEqual (-0.1, Math.Round (-0.123456789, 1), "#3");
918 public void TestDoubleRound3 ()
920 Assert.AreEqual (1D, Math.Round (1D, 0, MidpointRounding.ToEven), "#1");
921 Assert.AreEqual (1D, Math.Round (1D, 0, MidpointRounding.AwayFromZero), "#2");
923 Assert.AreEqual (-1D, Math.Round (-1D, 0, MidpointRounding.ToEven), "#3");
924 Assert.AreEqual (-1D, Math.Round (-1D, 0, MidpointRounding.AwayFromZero), "#4");
926 Assert.AreEqual (1D, Math.Round (1D, 1, MidpointRounding.ToEven), "#5");
927 Assert.AreEqual (1D, Math.Round (1D, 1, MidpointRounding.AwayFromZero), "#6");
929 Assert.AreEqual (-1D, Math.Round (-1D, 1, MidpointRounding.ToEven), "#7");
930 Assert.AreEqual (-1D, Math.Round (-1D, 1, MidpointRounding.AwayFromZero), "#8");
932 Assert.AreEqual (1D, Math.Round (1.2345D, 0, MidpointRounding.ToEven), "#9");
933 Assert.AreEqual (1D, Math.Round (1.2345D, 0, MidpointRounding.AwayFromZero), "#A");
935 Assert.AreEqual (-1D, Math.Round (-1.2345D, 0, MidpointRounding.ToEven), "#B");
936 Assert.AreEqual (-1D, Math.Round (-1.2345D, 0, MidpointRounding.AwayFromZero), "#C");
938 Assert.AreEqual (1.2D, Math.Round (1.2345D, 1, MidpointRounding.ToEven), "#D");
939 Assert.AreEqual (1.2D, Math.Round (1.2345D, 1, MidpointRounding.AwayFromZero), "#E");
941 Assert.AreEqual (-1.2D, Math.Round (-1.2345D, 1, MidpointRounding.ToEven), "#F");
942 Assert.AreEqual (-1.2D, Math.Round (-1.2345D, 1, MidpointRounding.AwayFromZero), "#10");
944 Assert.AreEqual (1.23D, Math.Round (1.2345D, 2, MidpointRounding.ToEven), "#11");
945 Assert.AreEqual (1.23D, Math.Round (1.2345D, 2, MidpointRounding.AwayFromZero), "#12");
947 Assert.AreEqual (-1.23D, Math.Round (-1.2345D, 2, MidpointRounding.ToEven), "#13");
948 Assert.AreEqual (-1.23D, Math.Round (-1.2345D, 2, MidpointRounding.AwayFromZero), "#14");
950 Assert.AreEqual (1.234D, Math.Round (1.2345D, 3, MidpointRounding.ToEven), "#15");
951 Assert.AreEqual (1.235D, Math.Round (1.2345D, 3, MidpointRounding.AwayFromZero), "#16");
953 Assert.AreEqual (-1.234D, Math.Round (-1.2345D, 3, MidpointRounding.ToEven), "#17");
954 Assert.AreEqual (-1.235D, Math.Round (-1.2345D, 3, MidpointRounding.AwayFromZero), "#18");
956 Assert.AreEqual (1.2345D, Math.Round (1.2345D, 4, MidpointRounding.ToEven), "#19");
957 Assert.AreEqual (1.2345D, Math.Round (1.2345D, 4, MidpointRounding.AwayFromZero), "#1A");
959 Assert.AreEqual (-1.2345D, Math.Round (-1.2345D, 4, MidpointRounding.ToEven), "#1B");
960 Assert.AreEqual (-1.2345D, Math.Round (-1.2345D, 4, MidpointRounding.AwayFromZero), "#1C");
962 Assert.AreEqual (2D, Math.Round (1.5432D, 0, MidpointRounding.ToEven), "#1D");
963 Assert.AreEqual (2D, Math.Round (1.5432D, 0, MidpointRounding.AwayFromZero), "#1E");
965 Assert.AreEqual (-2D, Math.Round (-1.5432D, 0, MidpointRounding.ToEven), "#1F");
966 Assert.AreEqual (-2D, Math.Round (-1.5432D, 0, MidpointRounding.AwayFromZero), "#20");
968 Assert.AreEqual (1.5D, Math.Round (1.5432D, 1, MidpointRounding.ToEven), "#21");
969 Assert.AreEqual (1.5D, Math.Round (1.5432D, 1, MidpointRounding.AwayFromZero), "#22");
971 Assert.AreEqual (-1.5D, Math.Round (-1.5432D, 1, MidpointRounding.ToEven), "#23");
972 Assert.AreEqual (-1.5D, Math.Round (-1.5432D, 1, MidpointRounding.AwayFromZero), "#24");
974 Assert.AreEqual (1.54D, Math.Round (1.5432D, 2, MidpointRounding.ToEven), "#25");
975 Assert.AreEqual (1.54D, Math.Round (1.5432D, 2, MidpointRounding.AwayFromZero), "#26");
977 Assert.AreEqual (-1.54D, Math.Round (-1.5432D, 2, MidpointRounding.ToEven), "#27");
978 Assert.AreEqual (-1.54D, Math.Round (-1.5432D, 2, MidpointRounding.AwayFromZero), "#28");
980 Assert.AreEqual (1.543D, Math.Round (1.5432D, 3, MidpointRounding.ToEven), "#29");
981 Assert.AreEqual (1.543D, Math.Round (1.5432D, 3, MidpointRounding.AwayFromZero), "#2A");
983 Assert.AreEqual (-1.543D, Math.Round (-1.5432D, 3, MidpointRounding.ToEven), "#2B");
984 Assert.AreEqual (-1.543D, Math.Round (-1.5432D, 3, MidpointRounding.AwayFromZero), "#2C");
986 Assert.AreEqual (1.5432D, Math.Round (1.5432D, 4, MidpointRounding.ToEven), "#2D");
987 Assert.AreEqual (1.5432D, Math.Round (1.5432D, 4, MidpointRounding.AwayFromZero), "#2E");
989 Assert.AreEqual (-1.5432D, Math.Round (-1.5432D, 4, MidpointRounding.ToEven), "#2F");
990 Assert.AreEqual (-1.5432D, Math.Round (-1.5432D, 4, MidpointRounding.AwayFromZero), "#30");
992 Assert.AreEqual (63988D, Math.Round (63987.83593942D, 0, MidpointRounding.ToEven), "#31");
993 Assert.AreEqual (63988D, Math.Round (63987.83593942D, 0, MidpointRounding.AwayFromZero), "#32");
995 Assert.AreEqual (-63988D, Math.Round (-63987.83593942D, 0, MidpointRounding.ToEven), "#33");
996 Assert.AreEqual (-63988D, Math.Round (-63987.83593942D, 0, MidpointRounding.AwayFromZero), "#34");
998 Assert.AreEqual (63987.83594D, Math.Round (63987.83593942D, 5, MidpointRounding.ToEven), "#35");
999 Assert.AreEqual (63987.83594D, Math.Round (63987.83593942D, 5, MidpointRounding.AwayFromZero), "#36");
1001 Assert.AreEqual (-63987.83594D, Math.Round (-63987.83593942D, 5, MidpointRounding.ToEven), "#37");
1002 Assert.AreEqual (-63987.83594D, Math.Round (-63987.83593942D, 5, MidpointRounding.AwayFromZero), "#38");
1004 Assert.AreEqual (63987.83593942D, Math.Round (63987.83593942D, 8, MidpointRounding.ToEven), "#39");
1005 Assert.AreEqual (63987.83593942D, Math.Round (63987.83593942D, 8, MidpointRounding.AwayFromZero), "#3A");
1007 Assert.AreEqual (-63987.83593942D, Math.Round (-63987.83593942D, 8, MidpointRounding.ToEven), "#3B");
1008 Assert.AreEqual (-63987.83593942D, Math.Round (-63987.83593942D, 8, MidpointRounding.AwayFromZero), "#3C");
1010 Assert.AreEqual (1, Math.Round (0.5, 0, MidpointRounding.AwayFromZero));
1014 public void TestDecimalSign ()
1019 Assert.IsTrue (Math.Sign (a) == -1, "#1");
1020 Assert.IsTrue (Math.Sign (b) == 1, "#2");
1021 Assert.IsTrue (Math.Sign (0M) == 0, "#3");
1025 public void TestDoubleSign ()
1030 Assert.IsTrue (Math.Sign (a) == -1, "#1");
1031 Assert.IsTrue (Math.Sign (b) == 1, "#2");
1032 Assert.IsTrue (Math.Sign (0D) == 0, "#3");
1036 public void TestFloatSign ()
1041 Assert.IsTrue (Math.Sign (a) == -1, "#1");
1042 Assert.IsTrue (Math.Sign (b) == 1, "#2");
1043 Assert.IsTrue (Math.Sign (0F) == 0, "#3");
1047 public void TestIntSign ()
1052 Assert.IsTrue (Math.Sign (a) == -1, "#1");
1053 Assert.IsTrue (Math.Sign (b) == 1, "#2");
1054 Assert.IsTrue (Math.Sign (0) == 0, "#3");
1058 public void TestLongSign ()
1063 Assert.IsTrue (Math.Sign (a) == -1, "#1");
1064 Assert.IsTrue (Math.Sign (b) == 1, "#2");
1065 Assert.IsTrue (Math.Sign (0L) == 0, "#3");
1069 public void TestSbyteSign ()
1074 Assert.IsTrue (Math.Sign (a) == -1, "#1");
1075 Assert.IsTrue (Math.Sign (b) == 1, "#2");
1076 Assert.IsTrue (Math.Sign (0) == 0, "#3");
1080 public void TestShortSign ()
1085 Assert.IsTrue (Math.Sign (a) == -1, "#1");
1086 Assert.IsTrue (Math.Sign (b) == 1, "#2");
1087 Assert.IsTrue (Math.Sign (0) == 0, "#3");