| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package libcore.java.lang; |
| |
| import junit.framework.Assert; |
| import junit.framework.TestCase; |
| |
| public class OldAndroidMathTest extends TestCase { |
| |
| private static final double HYP = Math.sqrt(2.0); |
| |
| private static final double OPP = 1.0; |
| |
| private static final double ADJ = 1.0; |
| |
| /* Required to make previous preprocessor flags work - do not remove */ |
| int unused = 0; |
| |
| public static void assertEquals(String message, double expected, double actual, double delta) { |
| if (delta == 0D) { |
| Assert.assertEquals(message, expected, actual, Math.ulp(expected)); |
| } else { |
| Assert.assertEquals(message, expected, actual, delta); |
| } |
| } |
| |
| public static void assertEquals(String message, float expected, float actual, float delta) { |
| if (delta == 0F) { |
| Assert.assertEquals(message, expected, actual, Math.ulp(expected)); |
| } else { |
| Assert.assertEquals(message, expected, actual, delta); |
| } |
| } |
| |
| public void testAbsD() { |
| // Test for method double java.lang.Math.abs(double) |
| |
| assertTrue("Incorrect double abs value", |
| (Math.abs(-1908.8976) == 1908.8976)); |
| assertTrue("Incorrect double abs value", |
| (Math.abs(1908.8976) == 1908.8976)); |
| } |
| |
| public void testAbsF() { |
| // Test for method float java.lang.Math.abs(float) |
| assertTrue("Incorrect float abs value", |
| (Math.abs(-1908.8976f) == 1908.8976f)); |
| assertTrue("Incorrect float abs value", |
| (Math.abs(1908.8976f) == 1908.8976f)); |
| } |
| |
| public void testAbsI() { |
| // Test for method int java.lang.Math.abs(int) |
| assertTrue("Incorrect int abs value", (Math.abs(-1908897) == 1908897)); |
| assertTrue("Incorrect int abs value", (Math.abs(1908897) == 1908897)); |
| } |
| |
| public void testAbsJ() { |
| // Test for method long java.lang.Math.abs(long) |
| assertTrue("Incorrect long abs value", |
| (Math.abs(-19088976000089L) == 19088976000089L)); |
| assertTrue("Incorrect long abs value", |
| (Math.abs(19088976000089L) == 19088976000089L)); |
| } |
| |
| public void testAcosD() { |
| // Test for method double java.lang.Math.acos(double) |
| double r = Math.cos(Math.acos(ADJ / HYP)); |
| long lr = Double.doubleToLongBits(r); |
| long t = Double.doubleToLongBits(ADJ / HYP); |
| assertTrue("Returned incorrect arc cosine", lr == t || (lr + 1) == t |
| || (lr - 1) == t); |
| } |
| |
| public void testAsinD() { |
| // Test for method double java.lang.Math.asin(double) |
| double r = Math.sin(Math.asin(OPP / HYP)); |
| long lr = Double.doubleToLongBits(r); |
| long t = Double.doubleToLongBits(OPP / HYP); |
| assertTrue("Returned incorrect arc sine", lr == t || (lr + 1) == t |
| || (lr - 1) == t); |
| } |
| |
| public void testAtanD() { |
| // Test for method double java.lang.Math.atan(double) |
| double answer = Math.tan(Math.atan(1.0)); |
| assertTrue("Returned incorrect arc tangent: " + answer, answer <= 1.0 |
| && answer >= 9.9999999999999983E-1); |
| } |
| |
| public void testAtan2DD() { |
| // Test for method double java.lang.Math.atan2(double, double) |
| double answer = Math.atan(Math.tan(1.0)); |
| assertTrue("Returned incorrect arc tangent: " + answer, answer <= 1.0 |
| && answer >= 9.9999999999999983E-1); |
| } |
| |
| public void testCbrtD() { |
| //Test for special situations |
| assertTrue("Should return Double.NaN", Double.isNaN(Math |
| .cbrt(Double.NaN))); |
| assertEquals("Should return Double.POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math |
| .cbrt(Double.POSITIVE_INFINITY), 0D); |
| assertEquals("Should return Double.NEGATIVE_INFINITY", |
| Double.NEGATIVE_INFINITY, Math |
| .cbrt(Double.NEGATIVE_INFINITY), 0D); |
| assertEquals(Double.doubleToLongBits(0.0), Double.doubleToLongBits(Math |
| .cbrt(0.0))); |
| assertEquals(Double.doubleToLongBits(+0.0), Double.doubleToLongBits(Math |
| .cbrt(+0.0))); |
| assertEquals(Double.doubleToLongBits(-0.0), Double.doubleToLongBits(Math |
| .cbrt(-0.0))); |
| |
| assertEquals("Should return 3.0", 3.0, Math.cbrt(27.0), 0D); |
| assertEquals("Should return 23.111993172558684", 23.111993172558684, |
| Math.cbrt(12345.6), 0D); |
| assertEquals("Should return 5.643803094122362E102", |
| 5.643803094122362E102, Math.cbrt(Double.MAX_VALUE), 0D); |
| assertEquals("Should return 0.01", 0.01, Math.cbrt(0.000001), 0D); |
| |
| assertEquals("Should return -3.0", -3.0, Math.cbrt(-27.0), 0D); |
| assertEquals("Should return -23.111993172558684", -23.111993172558684, |
| Math.cbrt(-12345.6), 0D); |
| assertEquals("Should return 1.7031839360032603E-108", |
| 1.7031839360032603E-108, Math.cbrt(Double.MIN_VALUE), 0D); |
| assertEquals("Should return -0.01", -0.01, Math.cbrt(-0.000001), 0D); |
| } |
| |
| public void testCeilD() { |
| // Test for method double java.lang.Math.ceil(double) |
| assertEquals("Incorrect ceiling for double", |
| 79, Math.ceil(78.89), 0); |
| assertEquals("Incorrect ceiling for double", |
| -78, Math.ceil(-78.89), 0); |
| } |
| |
| public void testCosD() { |
| // Test for method double java.lang.Math.cos(double) |
| assertEquals("Incorrect answer", 1.0, Math.cos(0), 0D); |
| assertEquals("Incorrect answer", 0.5403023058681398, Math.cos(1), 0D); |
| } |
| |
| public void testCoshD() { |
| // Test for special situations |
| assertTrue(Double.isNaN(Math.cosh(Double.NaN))); |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math.cosh(Double.POSITIVE_INFINITY), 0D); |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math.cosh(Double.NEGATIVE_INFINITY), 0D); |
| assertEquals("Should return 1.0", 1.0, Math.cosh(+0.0), 0D); |
| assertEquals("Should return 1.0", 1.0, Math.cosh(-0.0), 0D); |
| |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math.cosh(1234.56), 0D); |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math.cosh(-1234.56), 0D); |
| assertEquals("Should return 1.0000000000005", 1.0000000000005, Math |
| .cosh(0.000001), 0D); |
| assertEquals("Should return 1.0000000000005", 1.0000000000005, Math |
| .cosh(-0.000001), 0D); |
| assertEquals("Should return 5.212214351945598", 5.212214351945598, Math |
| .cosh(2.33482), 0D); |
| |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math.cosh(Double.MAX_VALUE), 0D); |
| assertEquals("Should return 1.0", 1.0, Math.cosh(Double.MIN_VALUE), 0D); |
| } |
| |
| public void testExpD() { |
| // Test for method double java.lang.Math.exp(double) |
| assertTrue("Incorrect answer returned for simple power", Math.abs(Math |
| .exp(4D) |
| - Math.E * Math.E * Math.E * Math.E) < 0.1D); |
| assertTrue("Incorrect answer returned for larger power", Math.log(Math |
| .abs(Math.exp(5.5D)) - 5.5D) < 10.0D); |
| } |
| |
| public void testExpm1D() { |
| // Test for special cases |
| assertTrue("Should return NaN", Double.isNaN(Math.expm1(Double.NaN))); |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math.expm1(Double.POSITIVE_INFINITY), 0D); |
| assertEquals("Should return -1.0", -1.0, Math |
| .expm1(Double.NEGATIVE_INFINITY), 0D); |
| assertEquals(Double.doubleToLongBits(0.0), Double.doubleToLongBits(Math |
| .expm1(0.0))); |
| assertEquals(Double.doubleToLongBits(+0.0), Double |
| .doubleToLongBits(Math.expm1(+0.0))); |
| assertEquals(Double.doubleToLongBits(-0.0), Double |
| .doubleToLongBits(Math.expm1(-0.0))); |
| |
| assertEquals("Should return -9.999950000166666E-6", |
| -9.999950000166666E-6, Math.expm1(-0.00001), 0D); |
| assertEquals("Should return 1.0145103074469635E60", |
| 1.0145103074469635E60, Math.expm1(138.16951162), 0D); |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math |
| .expm1(123456789123456789123456789.4521584223), 0D); |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math.expm1(Double.MAX_VALUE), 0D); |
| assertEquals("Should return MIN_VALUE", Double.MIN_VALUE, Math |
| .expm1(Double.MIN_VALUE), 0D); |
| } |
| |
| public void testFloorD() { |
| // Test for method double java.lang.Math.floor(double) |
| assertEquals("Incorrect floor for double", |
| 78, Math.floor(78.89), 0); |
| assertEquals("Incorrect floor for double", |
| -79, Math.floor(-78.89), 0); |
| } |
| |
| public void testHypotDD() { |
| // Test for special cases |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math.hypot(Double.POSITIVE_INFINITY, |
| 1.0), 0D); |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math.hypot(Double.NEGATIVE_INFINITY, |
| 123.324), 0D); |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math.hypot(-758.2587, |
| Double.POSITIVE_INFINITY), 0D); |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math.hypot(5687.21, |
| Double.NEGATIVE_INFINITY), 0D); |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math.hypot(Double.POSITIVE_INFINITY, |
| Double.NEGATIVE_INFINITY), 0D); |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math.hypot(Double.NEGATIVE_INFINITY, |
| Double.POSITIVE_INFINITY), 0D); |
| assertTrue("Should be NaN", Double.isNaN(Math.hypot(Double.NaN, |
| 2342301.89843))); |
| assertTrue("Should be NaN", Double.isNaN(Math.hypot(-345.2680, |
| Double.NaN))); |
| |
| assertEquals("Should return 2396424.905416697", 2396424.905416697, Math |
| .hypot(12322.12, -2396393.2258), 0D); |
| assertEquals("Should return 138.16958070558556", 138.16958070558556, |
| Math.hypot(-138.16951162, 0.13817035864), 0D); |
| assertEquals("Should return 1.7976931348623157E308", |
| 1.7976931348623157E308, Math.hypot(Double.MAX_VALUE, 211370.35), 0D); |
| assertEquals("Should return 5413.7185", 5413.7185, Math.hypot( |
| -5413.7185, Double.MIN_VALUE), 0D); |
| } |
| |
| public void testIEEEremainderDD() { |
| // Test for method double java.lang.Math.IEEEremainder(double, double) |
| assertEquals("Incorrect remainder returned", |
| 0.0, Math.IEEEremainder(1.0, 1.0), 0D); |
| assertTrue("Incorrect remainder returned", Math.IEEEremainder(1.32, |
| 89.765) >= 1.4705063220631647E-2 |
| || Math.IEEEremainder(1.32, 89.765) >= 1.4705063220631649E-2); |
| } |
| |
| public void testLogD() { |
| // Test for method double java.lang.Math.log(double) |
| for (double d = 10; d >= -10; d -= 0.5) { |
| double answer = Math.log(Math.exp(d)); |
| assertTrue("Answer does not equal expected answer for d = " + d |
| + " answer = " + answer, Math.abs(answer - d) <= Math |
| .abs(d * 0.00000001)); |
| } |
| } |
| |
| @SuppressWarnings("boxing") |
| public void testLog10D() { |
| // Test for special cases |
| assertTrue(Double.isNaN(Math.log10(Double.NaN))); |
| assertTrue(Double.isNaN(Math.log10(-2541.05745687234187532))); |
| assertTrue(Double.isNaN(Math.log10(-0.1))); |
| assertEquals(Double.POSITIVE_INFINITY, Math.log10(Double.POSITIVE_INFINITY)); |
| assertEquals(Double.NEGATIVE_INFINITY, Math.log10(0.0)); |
| assertEquals(Double.NEGATIVE_INFINITY, Math.log10(+0.0)); |
| assertEquals(Double.NEGATIVE_INFINITY, Math.log10(-0.0)); |
| |
| assertEquals(3.0, Math.log10(1000.0)); |
| assertEquals(14.0, Math.log10(Math.pow(10, 14))); |
| assertEquals(3.7389561269540406, Math.log10(5482.2158)); |
| assertEquals(14.661551142893833, Math.log10(458723662312872.125782332587)); |
| assertEquals(-0.9083828622192334, Math.log10(0.12348583358871)); |
| assertEquals(308.25471555991675, Math.log10(Double.MAX_VALUE)); |
| assertEquals(-323.3062153431158, Math.log10(Double.MIN_VALUE)); |
| } |
| |
| public void testLog1pD() { |
| // Test for special cases |
| assertTrue("Should return NaN", Double.isNaN(Math.log1p(Double.NaN))); |
| assertTrue("Should return NaN", Double.isNaN(Math.log1p(-32.0482175))); |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math.log1p(Double.POSITIVE_INFINITY), 0D); |
| assertEquals(Double.doubleToLongBits(0.0), Double.doubleToLongBits(Math |
| .log1p(0.0))); |
| assertEquals(Double.doubleToLongBits(+0.0), Double |
| .doubleToLongBits(Math.log1p(+0.0))); |
| assertEquals(Double.doubleToLongBits(-0.0), Double |
| .doubleToLongBits(Math.log1p(-0.0))); |
| |
| assertEquals("Should return -0.2941782295312541", -0.2941782295312541, |
| Math.log1p(-0.254856327), 0D); |
| assertEquals("Should return 7.368050685564151", 7.368050685564151, Math |
| .log1p(1583.542), 0D); |
| assertEquals("Should return 0.4633708685409921", 0.4633708685409921, |
| Math.log1p(0.5894227), 0D); |
| assertEquals("Should return 709.782712893384", 709.782712893384, Math |
| .log1p(Double.MAX_VALUE), 0D); |
| assertEquals("Should return Double.MIN_VALUE", Double.MIN_VALUE, Math |
| .log1p(Double.MIN_VALUE), 0D); |
| } |
| |
| public void testMaxDD() { |
| // Test for method double java.lang.Math.max(double, double) |
| assertEquals("Incorrect double max value", 1908897.6000089, Math.max(-1908897.6000089, |
| 1908897.6000089), 0D); |
| assertEquals("Incorrect double max value", |
| 1908897.6000089, Math.max(2.0, 1908897.6000089), 0D); |
| assertEquals("Incorrect double max value", -2.0, Math.max(-2.0, |
| -1908897.6000089), 0D); |
| |
| } |
| |
| public void testMaxFF() { |
| // Test for method float java.lang.Math.max(float, float) |
| assertTrue("Incorrect float max value", Math.max(-1908897.600f, |
| 1908897.600f) == 1908897.600f); |
| assertTrue("Incorrect float max value", |
| Math.max(2.0f, 1908897.600f) == 1908897.600f); |
| assertTrue("Incorrect float max value", |
| Math.max(-2.0f, -1908897.600f) == -2.0f); |
| } |
| |
| public void testMaxII() { |
| // Test for method int java.lang.Math.max(int, int) |
| assertEquals("Incorrect int max value", |
| 19088976, Math.max(-19088976, 19088976)); |
| assertEquals("Incorrect int max value", |
| 19088976, Math.max(20, 19088976)); |
| assertEquals("Incorrect int max value", -20, Math.max(-20, -19088976)); |
| } |
| |
| public void testMaxJJ() { |
| // Test for method long java.lang.Math.max(long, long) |
| assertEquals("Incorrect long max value", 19088976000089L, Math.max(-19088976000089L, |
| 19088976000089L)); |
| assertEquals("Incorrect long max value", |
| 19088976000089L, Math.max(20, 19088976000089L)); |
| assertEquals("Incorrect long max value", |
| -20, Math.max(-20, -19088976000089L)); |
| } |
| |
| public void testMinDD() { |
| // Test for method double java.lang.Math.min(double, double) |
| assertEquals("Incorrect double min value", -1908897.6000089, Math.min(-1908897.6000089, |
| 1908897.6000089), 0D); |
| assertEquals("Incorrect double min value", |
| 2.0, Math.min(2.0, 1908897.6000089), 0D); |
| assertEquals("Incorrect double min value", -1908897.6000089, Math.min(-2.0, |
| -1908897.6000089), 0D); |
| } |
| |
| public void testMinFF() { |
| // Test for method float java.lang.Math.min(float, float) |
| assertTrue("Incorrect float min value", Math.min(-1908897.600f, |
| 1908897.600f) == -1908897.600f); |
| assertTrue("Incorrect float min value", |
| Math.min(2.0f, 1908897.600f) == 2.0f); |
| assertTrue("Incorrect float min value", |
| Math.min(-2.0f, -1908897.600f) == -1908897.600f); |
| } |
| |
| public void testMinII() { |
| // Test for method int java.lang.Math.min(int, int) |
| assertEquals("Incorrect int min value", |
| -19088976, Math.min(-19088976, 19088976)); |
| assertEquals("Incorrect int min value", 20, Math.min(20, 19088976)); |
| assertEquals("Incorrect int min value", |
| -19088976, Math.min(-20, -19088976)); |
| |
| } |
| |
| public void testMinJJ() { |
| // Test for method long java.lang.Math.min(long, long) |
| assertEquals("Incorrect long min value", -19088976000089L, Math.min(-19088976000089L, |
| 19088976000089L)); |
| assertEquals("Incorrect long min value", |
| 20, Math.min(20, 19088976000089L)); |
| assertEquals("Incorrect long min value", |
| -19088976000089L, Math.min(-20, -19088976000089L)); |
| } |
| |
| public void testPowDD() { |
| // Test for method double java.lang.Math.pow(double, double) |
| assertTrue("pow returned incorrect value", |
| (long) Math.pow(2, 8) == 256l); |
| assertTrue("pow returned incorrect value", |
| Math.pow(2, -8) == 0.00390625d); |
| assertEquals("Incorrect root returned1", |
| 2, Math.sqrt(Math.pow(Math.sqrt(2), 4)), 0); |
| } |
| |
| public void testRintD() { |
| // Test for method double java.lang.Math.rint(double) |
| assertEquals("Failed to round properly - up to odd", |
| 3.0, Math.rint(2.9), 0D); |
| assertTrue("Failed to round properly - NaN", Double.isNaN(Math |
| .rint(Double.NaN))); |
| assertEquals("Failed to round properly down to even", |
| 2.0, Math.rint(2.1), 0D); |
| assertTrue("Failed to round properly " + 2.5 + " to even", Math |
| .rint(2.5) == 2.0); |
| } |
| |
| public void testRoundD() { |
| // Test for method long java.lang.Math.round(double) |
| assertEquals("Incorrect rounding of a float", -91, Math.round(-90.89d)); |
| } |
| |
| public void testRoundF() { |
| // Test for method int java.lang.Math.round(float) |
| assertEquals("Incorrect rounding of a float", -91, Math.round(-90.89f)); |
| } |
| |
| public void testSignumD() { |
| assertTrue(Double.isNaN(Math.signum(Double.NaN))); |
| assertTrue(Double.isNaN(Math.signum(Double.NaN))); |
| assertEquals(Double.doubleToLongBits(0.0), Double.doubleToLongBits(Math |
| .signum(0.0))); |
| assertEquals(Double.doubleToLongBits(+0.0), Double |
| .doubleToLongBits(Math.signum(+0.0))); |
| assertEquals(Double.doubleToLongBits(-0.0), Double |
| .doubleToLongBits(Math.signum(-0.0))); |
| |
| assertEquals(1.0, Math.signum(253681.2187962), 0D); |
| assertEquals(-1.0, Math.signum(-125874693.56), 0D); |
| assertEquals(1.0, Math.signum(1.2587E-308), 0D); |
| assertEquals(-1.0, Math.signum(-1.2587E-308), 0D); |
| |
| assertEquals(1.0, Math.signum(Double.MAX_VALUE), 0D); |
| assertEquals(1.0, Math.signum(Double.MIN_VALUE), 0D); |
| assertEquals(-1.0, Math.signum(-Double.MAX_VALUE), 0D); |
| assertEquals(-1.0, Math.signum(-Double.MIN_VALUE), 0D); |
| assertEquals(1.0, Math.signum(Double.POSITIVE_INFINITY), 0D); |
| assertEquals(-1.0, Math.signum(Double.NEGATIVE_INFINITY), 0D); |
| } |
| |
| public void testSignumF() { |
| assertTrue(Float.isNaN(Math.signum(Float.NaN))); |
| assertEquals(Float.floatToIntBits(0.0f), Float |
| .floatToIntBits(Math.signum(0.0f))); |
| assertEquals(Float.floatToIntBits(+0.0f), Float |
| .floatToIntBits(Math.signum(+0.0f))); |
| assertEquals(Float.floatToIntBits(-0.0f), Float |
| .floatToIntBits(Math.signum(-0.0f))); |
| |
| assertEquals(1.0f, Math.signum(253681.2187962f), 0f); |
| assertEquals(-1.0f, Math.signum(-125874693.56f), 0f); |
| assertEquals(1.0f, Math.signum(1.2587E-11f), 0f); |
| assertEquals(-1.0f, Math.signum(-1.2587E-11f), 0f); |
| |
| assertEquals(1.0f, Math.signum(Float.MAX_VALUE), 0f); |
| assertEquals(1.0f, Math.signum(Float.MIN_VALUE), 0f); |
| assertEquals(-1.0f, Math.signum(-Float.MAX_VALUE), 0f); |
| assertEquals(-1.0f, Math.signum(-Float.MIN_VALUE), 0f); |
| assertEquals(1.0f, Math.signum(Float.POSITIVE_INFINITY), 0f); |
| assertEquals(-1.0f, Math.signum(Float.NEGATIVE_INFINITY), 0f); |
| } |
| |
| public void testSinD() { |
| // Test for method double java.lang.Math.sin(double) |
| assertEquals("Incorrect answer", 0.0, Math.sin(0), 0D); |
| assertEquals("Incorrect answer", 0.8414709848078965, Math.sin(1), 0D); |
| } |
| |
| public void testSinhD() { |
| // Test for special situations |
| assertTrue("Should return NaN", Double.isNaN(Math.sinh(Double.NaN))); |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math.sinh(Double.POSITIVE_INFINITY), 0D); |
| assertEquals("Should return NEGATIVE_INFINITY", |
| Double.NEGATIVE_INFINITY, Math.sinh(Double.NEGATIVE_INFINITY), 0D); |
| assertEquals(Double.doubleToLongBits(0.0), Double.doubleToLongBits(Math |
| .sinh(0.0))); |
| assertEquals(Double.doubleToLongBits(+0.0), Double |
| .doubleToLongBits(Math.sinh(+0.0))); |
| assertEquals(Double.doubleToLongBits(-0.0), Double |
| .doubleToLongBits(Math.sinh(-0.0))); |
| |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math.sinh(1234.56), 0D); |
| assertEquals("Should return NEGATIVE_INFINITY", |
| Double.NEGATIVE_INFINITY, Math.sinh(-1234.56), 0D); |
| assertEquals("Should return 1.0000000000001666E-6", |
| 1.0000000000001666E-6, Math.sinh(0.000001), 0D); |
| assertEquals("Should return -1.0000000000001666E-6", |
| -1.0000000000001666E-6, Math.sinh(-0.000001), 0D); |
| assertEquals("Should return 5.115386441963859", 5.115386441963859, Math |
| .sinh(2.33482), 0D); |
| assertEquals("Should return POSITIVE_INFINITY", |
| Double.POSITIVE_INFINITY, Math.sinh(Double.MAX_VALUE), 0D); |
| assertEquals("Should return 4.9E-324", 4.9E-324, Math |
| .sinh(Double.MIN_VALUE), 0D); |
| } |
| |
| public void testSqrtD() { |
| // Test for method double java.lang.Math.sqrt(double) |
| assertEquals("Incorrect root returned2", 7, Math.sqrt(49), 0); |
| } |
| |
| public void testTanD() { |
| // Test for method double java.lang.Math.tan(double) |
| assertEquals("Incorrect answer", 0.0, Math.tan(0), 0D); |
| assertEquals("Incorrect answer", 1.5574077246549023, Math.tan(1), 0D); |
| |
| } |
| |
| public void testTanhD() { |
| // Test for special situations |
| assertTrue("Should return NaN", Double.isNaN(Math.tanh(Double.NaN))); |
| assertEquals("Should return +1.0", +1.0, Math |
| .tanh(Double.POSITIVE_INFINITY), 0D); |
| assertEquals("Should return -1.0", -1.0, Math |
| .tanh(Double.NEGATIVE_INFINITY), 0D); |
| assertEquals(Double.doubleToLongBits(0.0), Double.doubleToLongBits(Math |
| .tanh(0.0))); |
| assertEquals(Double.doubleToLongBits(+0.0), Double |
| .doubleToLongBits(Math.tanh(+0.0))); |
| assertEquals(Double.doubleToLongBits(-0.0), Double |
| .doubleToLongBits(Math.tanh(-0.0))); |
| |
| assertEquals("Should return 1.0", 1.0, Math.tanh(1234.56), 0D); |
| assertEquals("Should return -1.0", -1.0, Math.tanh(-1234.56), 0D); |
| assertEquals("Should return 9.999999999996666E-7", |
| 9.999999999996666E-7, Math.tanh(0.000001), 0D); |
| assertEquals("Should return 0.981422884124941", 0.981422884124941, Math |
| .tanh(2.33482), 0D); |
| assertEquals("Should return 1.0", 1.0, Math.tanh(Double.MAX_VALUE), 0D); |
| assertEquals("Should return 4.9E-324", 4.9E-324, Math |
| .tanh(Double.MIN_VALUE), 0D); |
| } |
| |
| public void testRandom() { |
| // There isn't a place for these tests so just stick them here |
| assertEquals("Wrong value E", |
| 4613303445314885481L, Double.doubleToLongBits(Math.E)); |
| assertEquals("Wrong value PI", |
| 4614256656552045848L, Double.doubleToLongBits(Math.PI)); |
| |
| for (int i = 500; i >= 0; i--) { |
| double d = Math.random(); |
| assertTrue("Generated number is out of range: " + d, d >= 0.0 |
| && d < 1.0); |
| } |
| } |
| |
| public void testToRadiansD() { |
| for (double d = 500; d >= 0; d -= 1.0) { |
| double converted = Math.toDegrees(Math.toRadians(d)); |
| assertTrue("Converted number not equal to original. d = " + d, |
| converted >= d * 0.99999999 && converted <= d * 1.00000001); |
| } |
| } |
| |
| public void testToDegreesD() { |
| for (double d = 500; d >= 0; d -= 1.0) { |
| double converted = Math.toRadians(Math.toDegrees(d)); |
| assertTrue("Converted number not equal to original. d = " + d, |
| converted >= d * 0.99999999 && converted <= d * 1.00000001); |
| } |
| } |
| |
| @SuppressWarnings("boxing") |
| public void testUlpD() { |
| // Test for special cases |
| assertTrue("Should return NaN", Double.isNaN(Math.ulp(Double.NaN))); |
| assertEquals("Returned incorrect value", Double.POSITIVE_INFINITY, Math |
| .ulp(Double.POSITIVE_INFINITY), 0D); |
| assertEquals("Returned incorrect value", Double.POSITIVE_INFINITY, Math |
| .ulp(Double.NEGATIVE_INFINITY), 0D); |
| assertEquals("Returned incorrect value", Double.MIN_VALUE, Math |
| .ulp(0.0), 0D); |
| assertEquals("Returned incorrect value", Double.MIN_VALUE, Math |
| .ulp(+0.0), 0D); |
| assertEquals("Returned incorrect value", Double.MIN_VALUE, Math |
| .ulp(-0.0), 0D); |
| assertEquals("Returned incorrect value", Math.pow(2, 971), Math |
| .ulp(Double.MAX_VALUE), 0D); |
| assertEquals("Returned incorrect value", Math.pow(2, 971), Math |
| .ulp(-Double.MAX_VALUE), 0D); |
| |
| assertEquals("Returned incorrect value", Double.MIN_VALUE, Math |
| .ulp(Double.MIN_VALUE), 0D); |
| assertEquals("Returned incorrect value", Double.MIN_VALUE, Math |
| .ulp(-Double.MIN_VALUE), 0D); |
| |
| assertEquals("Returned incorrect value", 2.220446049250313E-16, Math |
| .ulp(1.0), 0D); |
| assertEquals("Returned incorrect value", 2.220446049250313E-16, Math |
| .ulp(-1.0), 0D); |
| assertEquals("Returned incorrect value", 2.2737367544323206E-13, Math |
| .ulp(1153.0), 0D); |
| } |
| |
| @SuppressWarnings("boxing") |
| public void testUlpf() { |
| // Test for special cases |
| assertTrue("Should return NaN", Float.isNaN(Math.ulp(Float.NaN))); |
| assertEquals("Returned incorrect value", Float.POSITIVE_INFINITY, Math |
| .ulp(Float.POSITIVE_INFINITY), 0f); |
| assertEquals("Returned incorrect value", Float.POSITIVE_INFINITY, Math |
| .ulp(Float.NEGATIVE_INFINITY), 0f); |
| assertEquals("Returned incorrect value", Float.MIN_VALUE, Math |
| .ulp(0.0f), 0f); |
| assertEquals("Returned incorrect value", Float.MIN_VALUE, Math |
| .ulp(+0.0f), 0f); |
| assertEquals("Returned incorrect value", Float.MIN_VALUE, Math |
| .ulp(-0.0f), 0f); |
| assertEquals("Returned incorrect value", 2.028241E31f, Math |
| .ulp(Float.MAX_VALUE), 0f); |
| assertEquals("Returned incorrect value", 2.028241E31f, Math |
| .ulp(-Float.MAX_VALUE), 0f); |
| |
| assertEquals("Returned incorrect value", 1.4E-45f, Math |
| .ulp(Float.MIN_VALUE), 0f); |
| assertEquals("Returned incorrect value", 1.4E-45f, Math |
| .ulp(-Float.MIN_VALUE), 0f); |
| |
| assertEquals("Returned incorrect value", 1.1920929E-7f, Math.ulp(1.0f), |
| 0f); |
| assertEquals("Returned incorrect value", 1.1920929E-7f, |
| Math.ulp(-1.0f), 0f); |
| assertEquals("Returned incorrect value", 1.2207031E-4f, Math |
| .ulp(1153.0f), 0f); |
| assertEquals("Returned incorrect value", 5.6E-45f, Math |
| .ulp(9.403954E-38f), 0f); |
| } |
| } |
