vector_tools_more.h

// Description: Some array programming functions for vectors
// Detail: min, minIndex, max, maxIndex, permute, clamp, ...

#ifndef PASTELSYS_VECTOR_TOOLS_MORE_H
#define PASTELSYS_VECTOR_TOOLS_MORE_H

#include "pastel/sys/vector/vector_tools.h"
#include "pastel/sys/vector/vector.h"

#include "pastel/sys/mytypes.h"
#include "pastel/sys/tuple/tuple.h"

#include "pastel/sys/math_functions.h"

/*
Note that most of the array programming functions are found
in the files 'binary_vectorexpression.h' and
'unary_vectorexpression.h'.
*/

namespace Pastel
{

    // Permutation

    template <typename Real, integer N, typename Expression>
    inline Vector<Real, N> permute(
        const VectorExpression<Real, N, Expression>& that,
        const Tuple<integer, N>& permutation);

    //! Returns the index of the minimum element.

    template <typename Real, integer N, typename Expression>
    inline integer minIndex(
        const VectorExpression<Real, N, Expression>& that);

    //! Returns the minimum of elements.

    template <typename Real, integer N, typename Expression>
    inline Real min(
        const VectorExpression<Real, N, Expression>& that);

    //! Returns the index of the maximum element.

    template <typename Real, integer N, typename Expression>
    inline integer maxIndex(
        const VectorExpression<Real, N, Expression>& that);

    //! Returns the maximum of elements.

    template <typename Real, integer N, typename Expression>
    inline Real max(
        const VectorExpression<Real, N, Expression>& that);

    template <typename Real, integer N,
    typename ThatExpression, typename MinExpression,
    typename MaxExpression>
    inline Vector<Real, N> clamp(
        const VectorExpression<Real, N, ThatExpression>& that,
        const VectorExpression<Real, N, MinExpression>& minimum,
        const VectorExpression<Real, N, MaxExpression>& maximum);

}

#endif