public void Test_SingleToInt32Bits_NaN()
{
for (int i = 0; i < SIGNIFICAND_WIDTH - 1; i++)
{
int x = 1 << i;
// Strip out sign and exponent bits
int y = x & SIGNIF_BIT_MASK;
float[] values =
{
BitConversion.Int32BitsToSingle(EXP_BIT_MASK | y),
BitConversion.Int32BitsToSingle(SIGN_BIT_MASK | EXP_BIT_MASK | y)
};
foreach (float value in values)
{
assertTrue("Invalid input " + y + "yielded non-NaN: " + value, float.IsNaN(value));
int converted = BitConversion.SingleToInt32Bits(value);
assertTrue(string.Format("Non-canoncial NaN bits returned: {0:x8}", converted), 0x7fc00000 == converted);
}
//testNanCase(1 << i);
}
}
public void Test_Int32BitsToSingleI()
{
float f = 9876.2345f;
int bits = BitConversion.SingleToInt32Bits(f);
float r = BitConversion.Int32BitsToSingle(bits);
Assert.AreEqual(f, r, 0F, "Incorrect intBits returned");
}
public void Test_SingleToInt32BitsF()
{
float f = 9876.2345f;
int bits = BitConversion.SingleToInt32Bits(f);
float r = BitConversion.Int32BitsToSingle(bits);
Assert.IsTrue(f == r, "Incorrect intBits returned");
}
public void Test_SingleToInt32Bits_NegativeInfinity()
{
assertTrue("Bad conversion for -infinity.", BitConversion.SingleToInt32Bits(float.NegativeInfinity) == unchecked ((int)0xFF800000));
}
public void Test_SingleToInt32Bits_PositiveInfinity()
{
assertTrue("Bad conversion for +infinity.", BitConversion.SingleToInt32Bits(float.PositiveInfinity) == 0x7F800000);
}