/// <summary>
/// Returns the adjacent floating-point value in the direction of
/// positive infinity.
/// </summary>
/// <param name="value">Starting floating-point value.</param>
public static float NextUp(this float value)
{
#if NETCOREAPP3_1_OR_GREATER
return(MathF.BitIncrement(value));
#else
int bits = value.AsInt();
if ((bits & 0x7F800000) >= 0x7F800000)
{
// NaN returns NaN
// -Infinity returns float.MinValue
// +Infinity returns +Infinity
return((bits == unchecked ((int)0xFF800000)) ? float.MinValue : value);
}
if (bits == unchecked ((int)0x80000000))
{
// -0.0 returns float.Epsilon
return(float.Epsilon);
}
// Negative values need to be decremented
// Positive values need to be incremented
bits += (bits < 0) ? -1 : +1;
return(bits.AsFloat());
#endif
}
private static void Main(string[] args)
{
bool f = getSomeBool();
Console.WriteLine(f);
Console.WriteLine(f == true);
Console.WriteLine(f.Equals(true));
void print(float x) =>
Console.WriteLine("x = {0,6} : 0x{1:X}", x,
BitConverter.DoubleToInt64Bits(x));
float x = 0f;
print(x);
x = MathF.BitDecrement(x);
print(x);
x = MathF.BitIncrement(x);
print(x);
}
