Denormal floating numbers playground

Denormals.cs

using System.Text;

PrintNumber(0f);
PrintNumber(-0f);
PrintNumber(1f);
PrintNumber(-1f);
PrintNumber(float.PositiveInfinity);
PrintNumber(float.NegativeInfinity);
PrintNumber(float.NaN);
PrintNumber(float.Epsilon);
PrintNumber(float.Epsilon * 2);

void PrintNumber(float value)
{
  var sb = new StringBuilder();
  sb.Append($"value={value,-20:R}");

  var bits = BitConverter.SingleToUInt32Bits(value);
  sb.Append($" sign={bits >> 31}");

  var exponent = (byte) (bits >> 23);
  var mantissa = (int) (bits & 0x7FFFFF);

  if (exponent > 1 && exponent <= 254)
    sb.Append($" exp={(sbyte)(exponent + 126),-6}");
  else if (exponent == 0)
    sb.Append(mantissa == 0 ? " exp=zero  " : " exp=denorm");
  else
    sb.Append(" exp=notfin");

  sb.Append($" exp_biased={exponent,-3}");

  sb.Append($" exp_field={Convert.ToString(exponent, 2).PadLeft(8, '0')}");
  sb.Append($" frac_field={Convert.ToString(mantissa, 2).PadLeft(23, '0')}");

  Console.WriteLine(sb);
}