private static int testUnityULPCases() { int failures = 0; for (float sign : new float[] {-1, 1}) { for (float v1 : new float[] {1 << 23, 1 << 24}) { for (int k = -5; k <= 5; k++) { float value = (v1 + k) * sign; float actual = Math.round(value); failures += Tests.test("Math.round", value, actual, value); } } } if (failures != 0) { System.out.println(); } for (double sign : new double[] {-1, 1}) { for (double v1 : new double[] {1L << 52, 1L << 53}) { for (int k = -5; k <= 5; k++) { double value = (v1 + k) * sign; double actual = Math.round(value); failures += Tests.test("Math.round", value, actual, value); } } } return failures; }
private static int testNearHalfCases(float input, float expected) { int failures = 0; failures += Tests.test("Math.round", input, Math.round(input), expected); failures += Tests.test("StrictMath.round", input, StrictMath.round(input), expected); return failures; }
private static int testSpecialCases() { int failures = 0; failures += Tests.test("Math.round", Float.NaN, Math.round(Float.NaN), 0.0F); failures += Tests.test( "Math.round", Float.POSITIVE_INFINITY, Math.round(Float.POSITIVE_INFINITY), Integer.MAX_VALUE); failures += Tests.test( "Math.round", Float.NEGATIVE_INFINITY, Math.round(Float.NEGATIVE_INFINITY), Integer.MIN_VALUE); failures += Tests.test( "Math.round", -(float) Integer.MIN_VALUE, Math.round(-(float) Integer.MIN_VALUE), Integer.MAX_VALUE); failures += Tests.test( "Math.round", (float) Integer.MIN_VALUE, Math.round((float) Integer.MIN_VALUE), Integer.MIN_VALUE); failures += Tests.test("Math.round", 0F, Math.round(0F), 0.0F); failures += Tests.test("Math.round", Float.MIN_VALUE, Math.round(Float.MIN_VALUE), 0.0F); failures += Tests.test("Math.round", -Float.MIN_VALUE, Math.round(-Float.MIN_VALUE), 0.0F); failures += Tests.test("Math.round", Double.NaN, Math.round(Double.NaN), 0.0); failures += Tests.test( "Math.round", Double.POSITIVE_INFINITY, Math.round(Double.POSITIVE_INFINITY), Long.MAX_VALUE); failures += Tests.test( "Math.round", Double.NEGATIVE_INFINITY, Math.round(Double.NEGATIVE_INFINITY), Long.MIN_VALUE); failures += Tests.test( "Math.round", -(double) Long.MIN_VALUE, Math.round(-(double) Long.MIN_VALUE), Long.MAX_VALUE); failures += Tests.test( "Math.round", (double) Long.MIN_VALUE, Math.round((double) Long.MIN_VALUE), Long.MIN_VALUE); failures += Tests.test("Math.round", 0, Math.round(0), 0.0); failures += Tests.test("Math.round", Double.MIN_VALUE, Math.round(Double.MIN_VALUE), 0.0); failures += Tests.test("Math.round", -Double.MIN_VALUE, Math.round(-Double.MIN_VALUE), 0.0); return failures; }