void next_check <T>()
where T : unmanaged
{
for (var i = 0; i < SampleSize; i++)
{
var x = Random.CpuVec128 <T>();
var xn = x.Next();
var xp = x.Prior();
var units128 = Vec128Pattern.Units <T>();
Claim.yea(ginx.add <T>(xp, units128).Equals(x));
Claim.yea(ginx.sub <T>(xn, units128).Equals(x));
for (var j = 0; j < x.Length(); j++)
{
Claim.eq(xn[j], gmath.inc(x[j]));
Claim.eq(xp[j], gmath.dec(x[j]));
}
var y = Random.CpuVec256 <T>();
var yn = y.Next();
var yp = y.Prior();
var units256 = Vec256Pattern.Units <T>();
Claim.yea(ginx.add <T>(yp, units256).Equals(y));
Claim.yea(ginx.sub <T>(yn, units256).Equals(y));
for (var j = 0; j < x.Length(); j++)
{
Claim.eq(yn[j], gmath.inc(y[j]));
Claim.eq(yp[j], gmath.dec(y[j]));
}
}
}
/// <summary>
/// Creates a vector with decrementing components v[0] = last and v[i-1] = v[i] - 1 for i=1...N-1
/// </summary>
/// <param name="last">The value of the first component</param>
/// <param name="swaps">Transpositions applied to decrements prior to vector creation</param>
/// <typeparam name="T">The primal component type</typeparam>
public static Vec256 <T> Decrements <T>(T last = default, params Swap[] swaps)
where T : unmanaged
=> Vec256Pattern <T> .Decrements(last, swaps);
/// <summary>
/// Creates a vector with incrementing components, v[0] = first and v[i+1] = v[i] + 1 for i=1...N-1
/// </summary>
/// <param name="first">The value of the first component</param>
/// <typeparam name="T">The primal component type</typeparam>
public static Vec256 <T> Increments <T>(T first = default, params Swap[] swaps)
where T : unmanaged
=> Vec256Pattern <T> .Increments(first, swaps);