Arbitraty size algorithm ex: Histogram

[soufianekhiat]

Hello,

I have specilization for Histogram 2/3/4D but I would like to have an arbitrary size input.
I decided to share data as func so for an histogram I attempt this one:

Func	Histogram( Func in, Type hist_type = Type( halide_type_uint, 8, 1 ) )
{
	//std::vector< Var > vars;
	//vars.resize( in.dimensions() );

	//RDom r(  );
	Func hist( "histogram" );
	hist( _ ) = cast( hist_type, 0 ); // Does that make sense to do that instead of RDom?

	// in can be 1D to 8D.
	hist( clamp( _, 0, hist_type.max() ) ) += cast( hist_type, 1 );

	return hist;
}

[soufianekhiat]

ref:
#8025