/// <summary>
/// Calculates the product of the elements along the specified axis.
/// </summary>
/// <param name="axis">The axis to calculate the product along.</param>
/// <param name="source">The NdArray containing the source values.</param>
/// <returns>A new NdArray containing the result of this operation.</returns>
public static NdArray <T> ProductAxis(int axis, NdArray <T> source)
{
var(result, src) = NdArray <T> .PrepareAxisReduceTarget <T, T>(axis, source);
var(src1, _) = NdArray <T> .PrepareAxisReduceSources(result, axis, source, null);
result.Backend.ProductLastAxis(result, src1);
return(result);
}
public static void FillMinAxis(NdArray <T> target, int axis, NdArray <T> source)
{
var(preparedSource, _) = NdArray <T> .PrepareAxisReduceSources(target, axis, source, null);
target.Backend.MinLastAxis(target, preparedSource);
}
public static void FillCountTrueAxis(NdArray <int> target, int axis, NdArray <bool> source)
{
var(preparedSource, _) = NdArray <int> .PrepareAxisReduceSources(target, axis, source, null);
target.Backend.CountTrueLastAxis(target, preparedSource);
}
/// <summary>
/// Finds the first occurence of the specfied value along the specified axis and write its index into the target NdArray.
/// </summary>
/// <param name="target">A target NdArray containing the result of this operation.</param>
/// <param name="value">The value to find.</param>
/// <param name="axis">The axis to find the value along.</param>
/// <param name="source">The NdArray containing the source values.</param>
public static void FillFindAxis(NdArray <int> target, T value, int axis, NdArray <T> source)
{
var(preparedSource, _) = NdArray <T> .PrepareAxisReduceSources(target, axis, source, null);
target.Backend.FindLastAxis(value, target, preparedSource);
}
