public void Case6()
{
var shape = new Shape(1);
var sh = new ValueOffsetIncrementor(shape);
sh.Next().Should().Be(0);
sh.Next().Should().Be(-1);
}
public void Case8()
{
var shape = new Shape(100);
var sh = new ValueOffsetIncrementor(shape);
sh.Next().Should().Be(0);
sh.Next().Should().Be(shape.GetOffset(1));
sh.Next().Should().Be(shape.GetOffset(2));
}
public void Case4()
{
var shape = new Shape(1, 1, 3, 1);
var sh = new ValueOffsetIncrementor(shape);
sh.Next().Should().Be(0);
sh.Next().Should().Be(shape.GetOffset(0, 0, 1, 0));
sh.Next().Should().Be(shape.GetOffset(0, 0, 2, 0));
sh.Next().Should().Be(-1);
}
public void OffsetIncrementor()
{
for (int i = 0; i < 100_000; i++)
{
iter.Next();
}
}
protected void setDefaults_Int64() //Int64 is the input type
{
if (AutoReset)
{
autoresetDefault_Int64();
return;
}
if (typeof(TOut) == typeof(Int64))
{
setDefaults_NoCast();
return;
}
var convert = Converts.FindConverter <Int64, TOut>();
//non auto-resetting.
var localBlock = Block;
Shape shape = Shape;
if (!Shape.IsContiguous || Shape.ModifiedStrides)
{
//Shape is sliced, not auto-resetting
switch (Type)
{
case IteratorType.Scalar:
{
var hasNext = new Reference <bool>(true);
var offset = shape.TransformOffset(0);
if (offset != 0)
{
MoveNext = () =>
{
hasNext.Value = false;
return(convert(*((Int64 *)localBlock.Address + offset)));
};
MoveNextReference = () => throw new NotSupportedException("Unable to return references during iteration when casting is involved.");
}
else
{
MoveNext = () =>
{
hasNext.Value = false;
return(convert(*((Int64 *)localBlock.Address)));
};
MoveNextReference = () => throw new NotSupportedException("Unable to return references during iteration when casting is involved.");
}
Reset = () => hasNext.Value = true;
HasNext = () => hasNext.Value;
break;
}
case IteratorType.Vector:
{
MoveNext = () => convert(*((Int64 *)localBlock.Address + shape.GetOffset(index++)));
MoveNextReference = () => throw new NotSupportedException("Unable to return references during iteration when casting is involved.");
Reset = () => index = 0;
HasNext = () => index < Shape.size;
break;
}
case IteratorType.Matrix:
case IteratorType.Tensor:
{
var hasNext = new Reference <bool>(true);
var iterator = new ValueCoordinatesIncrementor(ref shape, delegate(ref ValueCoordinatesIncrementor _) { hasNext.Value = false; });
Func <int[], int> getOffset = shape.GetOffset;
var index = iterator.Index;
MoveNext = () =>
{
var ret = convert(*((Int64 *)localBlock.Address + getOffset(index)));
iterator.Next();
return(ret);
};
MoveNextReference = () => throw new NotSupportedException("Unable to return references during iteration when casting is involved.");
Reset = () =>
{
iterator.Reset();
hasNext.Value = true;
};
HasNext = () => hasNext.Value;
break;
}
default:
throw new ArgumentOutOfRangeException();
}
}
else
{
//Shape is not sliced, not auto-resetting
switch (Type)
{
case IteratorType.Scalar:
var hasNext = new Reference <bool>(true);
MoveNext = () =>
{
hasNext.Value = false;
return(convert(*((Int64 *)localBlock.Address)));
};
MoveNextReference = () => throw new NotSupportedException("Unable to return references during iteration when casting is involved.");
Reset = () => hasNext.Value = true;
HasNext = () => hasNext.Value;
break;
case IteratorType.Vector:
MoveNext = () => convert(*((Int64 *)localBlock.Address + index++));
MoveNextReference = () => throw new NotSupportedException("Unable to return references during iteration when casting is involved.");
Reset = () => index = 0;
HasNext = () => index < Shape.size;
break;
case IteratorType.Matrix:
case IteratorType.Tensor:
var iterator = new ValueOffsetIncrementor(Shape); //we do not copy the dimensions because there is not risk for the iterator's shape to change.
MoveNext = () => convert(*((Int64 *)localBlock.Address + iterator.Next()));
MoveNextReference = () => throw new NotSupportedException("Unable to return references during iteration when casting is involved.");
Reset = () => iterator.Reset();
HasNext = () => iterator.HasNext;
break;
default:
throw new ArgumentOutOfRangeException();
}
}
}