/// <summary>
/// Returns the n-th highest number less than this.
/// </summary>
/// <param name="steps">n</param>
public static FloatPtr Preceding(this FloatPtr value, IntPtr steps)
{
if (FloatPtr.IsNegativeInfinity(value) || FloatPtr.IsNaN(value))
{
return(value);
}
else if (FloatPtr.IsPositiveInfinity(value))
{
return(Single.MaxValue);
}
var ptrRep = FloatPtr.FloatPtrToIntPtrBits(value);
if ((long)ptrRep >= 0)
{
ptrRep = (IntPtr)((long)ptrRep - (long)steps);
}
else if (ptrRep == IntPtrMinValue) //-0
{
ptrRep = steps;
}
else
{
ptrRep = (IntPtr)((long)ptrRep + (long)steps);
}
return(FloatPtr.IntPtrBitsToFloatPtr(ptrRep));
}
/// <summary>
/// Returns the highest number less than this.
/// </summary>
public static FloatPtr Preceding(this FloatPtr value)
{
return(Preceding(value, (IntPtr)1));
}
/// <summary>
/// Returns the smallest number greater than this.
/// </summary>
public static FloatPtr Following(this FloatPtr value)
{
return(Following(value, (IntPtr)1));
}