public void bitblock32_spans()
{
var x = BitBlock32.Alloc();
x.Bit0 = 1;
x.Bit5 = 1;
x.Bit19 = 1;
var y = BitBlock.AsSpan(ref x);
Claim.eq(y[0], x.Bit0);
Claim.eq(y[5], x.Bit19);
Claim.eq(x[0], (byte)1);
Claim.eq(x[5], (byte)1);
Claim.eq(x[19], (byte)1);
for (var i = 0; i < SampleSize; i++)
{
var src = Random.Span <byte>(Pow2.T05);
var dstBlock = BitBlock32.FromSpan(src);
for (var j = 0; j < src.Length; j++)
{
Claim.eq(src[j], dstBlock[j]);
}
var dstSpan = BitBlock.AsSpan(ref dstBlock);
for (var j = 0; j < dstSpan.Length; j++)
{
Bits.toggle(ref dstSpan[j], 0);
Claim.neq(dstBlock[j], src[j]);
}
}
}
public void bitblock32_pack()
{
for (var i = 0; i < SampleSize; i++)
{
var src = Random.Next <uint>();
var block = BitBlock32.Alloc();
var dst = 0u;
BitParts.part32x1(src, ref block);
BitParts.pack32x1(in block, ref dst);
Claim.eq(dst, src);
}
}
/// <summary>
/// Partitions 32 bits from the source into 32 target segments of effective width 1
/// </summary>
/// <param name="src">The source value</param>
/// <param name="dst">A target span of sufficient length</param>
public static ref BitBlock32 part32x1(uint src, ref BitBlock32 dst)
{
dst.Bit0 = project <byte>(select(src, Part32x1.Part0), Part32x1.First);
dst.Bit1 = project <byte>(select(src, Part32x1.Part1), Part32x1.First);
dst.Bit2 = project <byte>(select(src, Part32x1.Part2), Part32x1.First);
dst.Bit3 = project <byte>(select(src, Part32x1.Part3), Part32x1.First);
dst.Bit4 = project <byte>(select(src, Part32x1.Part4), Part32x1.First);
dst.Bit5 = project <byte>(select(src, Part32x1.Part5), Part32x1.First);
dst.Bit6 = project <byte>(select(src, Part32x1.Part6), Part32x1.First);
dst.Bit7 = project <byte>(select(src, Part32x1.Part7), Part32x1.First);
dst.Bit8 = project <byte>(select(src, Part32x1.Part8), Part32x1.First);
dst.Bit9 = project <byte>(select(src, Part32x1.Part9), Part32x1.First);
dst.Bit10 = project <byte>(select(src, Part32x1.Part10), Part32x1.First);
dst.Bit11 = project <byte>(select(src, Part32x1.Part11), Part32x1.First);
dst.Bit12 = project <byte>(select(src, Part32x1.Part12), Part32x1.First);
dst.Bit13 = project <byte>(select(src, Part32x1.Part13), Part32x1.First);
dst.Bit14 = project <byte>(select(src, Part32x1.Part14), Part32x1.First);
dst.Bit15 = project <byte>(select(src, Part32x1.Part15), Part32x1.First);
dst.Bit16 = project <byte>(select(src, Part32x1.Part16), Part32x1.First);
dst.Bit17 = project <byte>(select(src, Part32x1.Part17), Part32x1.First);
dst.Bit18 = project <byte>(select(src, Part32x1.Part18), Part32x1.First);
dst.Bit19 = project <byte>(select(src, Part32x1.Part19), Part32x1.First);
dst.Bit20 = project <byte>(select(src, Part32x1.Part20), Part32x1.First);
dst.Bit21 = project <byte>(select(src, Part32x1.Part21), Part32x1.First);
dst.Bit22 = project <byte>(select(src, Part32x1.Part22), Part32x1.First);
dst.Bit23 = project <byte>(select(src, Part32x1.Part23), Part32x1.First);
dst.Bit24 = project <byte>(select(src, Part32x1.Part24), Part32x1.First);
dst.Bit25 = project <byte>(select(src, Part32x1.Part25), Part32x1.First);
dst.Bit26 = project <byte>(select(src, Part32x1.Part26), Part32x1.First);
dst.Bit27 = project <byte>(select(src, Part32x1.Part27), Part32x1.First);
dst.Bit28 = project <byte>(select(src, Part32x1.Part28), Part32x1.First);
dst.Bit29 = project <byte>(select(src, Part32x1.Part29), Part32x1.First);
dst.Bit30 = project <byte>(select(src, Part32x1.Part30), Part32x1.First);
dst.Bit31 = project <byte>(select(src, Part32x1.Part31), Part32x1.First);
return(ref dst);
}
public void bitpart_32x1_bench()
{
void bitstring()
{
var opname = "part32x1_bitstring";
var sw = stopwatch(false);
var bs = default(BitString);
for (var i = 0; i < OpCount; i++)
{
var src = Random.Next <uint>();
sw.Start();
bs = src.ToBitString();
sw.Stop();
}
Collect((OpCount, sw, opname));
}
void blockstyle()
{
var opname = "part32x1_block32";
var sw = stopwatch(false);
BitBlock32 last = default;
for (var i = 0; i < OpCount; i++)
{
var src = Random.Next <uint>();
sw.Start();
BitParts.part32x1(src, ref last);
sw.Stop();
}
Collect((OpCount, sw, opname));
}
void spanstyle()
{
var opname = "part32x1";
var sw = stopwatch(false);
Span <byte> dst = stackalloc byte[32];
for (var i = 0; i < OpCount; i++)
{
var src = Random.Next <uint>();
sw.Start();
BitParts.part32x1(src, dst);
sw.Stop();
}
Collect((OpCount, sw, opname));
}
void bittest()
{
var opname = "part32x1_test";
var sw = stopwatch(false);
Span <byte> dst = stackalloc byte[32];
for (var i = 0; i < OpCount; i++)
{
var src = Random.Next <uint>();
sw.Start();
part32x1_test(src, dst);
sw.Stop();
}
Collect((OpCount, sw, opname));
}
spanstyle();
}
public static Span <byte> part32x1(uint src)
{
BitBlock32 block = default;
return(BitBlock.AsSpan(ref part32x1(src, ref block)));
}
