public void Test_DoubleToInt64Bits_NaN()
{
for (int i = 0; i < SIGNIFICAND_WIDTH - 1; i++)
{
long x = 1 << i;
// Strip out sign and exponent bits
long y = x & SIGNIF_BIT_MASK;
double[] values =
{
BitConversion.Int64BitsToDouble(EXP_BIT_MASK | y),
BitConversion.Int64BitsToDouble(SIGN_BIT_MASK | EXP_BIT_MASK | y)
};
foreach (double value in values)
{
assertTrue("Invalid input " + y + "yielded non-NaN: " + value, double.IsNaN(value));
long converted = BitConversion.DoubleToInt64Bits(value);
assertTrue(string.Format("Non-canoncial NaN bits returned: {0:x8}", converted), 0x7ff8000000000000L == converted);
}
//testNanCase(1 << i);
}
}
public void Test_DoubleToInt64BitsD()
{
// Test for method long java.lang.Double.doubleToLongBits(double)
double d = double.MaxValue;
long lbits = BitConversion.DoubleToInt64Bits(d);
double r = BitConversion.Int64BitsToDouble(lbits);
Assert.IsTrue(d == r, "Bit conversion failed");
}
public void Test_DoubleToInt64Bits_NegativeInfinity()
{
assertTrue("Bad conversion for -infinity.", BitConversion.DoubleToInt64Bits(double.NegativeInfinity) == unchecked ((long)0xfff0000000000000L));
}
public void Test_DoubleToInt64Bits_PositiveInfinity()
{
assertTrue("Bad conversion for +infinity.", BitConversion.DoubleToInt64Bits(double.PositiveInfinity) == 0x7ff0000000000000L);
}
