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ipa: libipa: vector: Add element-wise min() and max() functions

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Add functions to calculate the element-wise minimum and maximum of two
vectors or of a vector and a scalar. This will be used in algorithm
implementations.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Milan Zamazal <mzamazal@redhat.com>
This commit is contained in:
Laurent Pinchart 2024-11-16 21:02:52 +02:00
parent 69544f5b7b
commit 2a29a2a6a1
2 changed files with 48 additions and 0 deletions
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28
src/ipa/libipa/vector.cpp
View file

@ -176,6 +176,34 @@ namespace ipa {
* \return This vector
*/
/**
* \fn Vector::min(const Vector &other) const
* \brief Calculate the minimum of this vector and \a other element-wise
* \param[in] other The other vector
* \return The element-wise minimum of this vector and \a other
*/
/**
* \fn Vector::min(T scalar) const
* \brief Calculate the minimum of this vector and \a scalar element-wise
* \param[in] scalar The scalar
* \return The element-wise minimum of this vector and \a scalar
*/
/**
* \fn Vector::max(const Vector &other) const
* \brief Calculate the maximum of this vector and \a other element-wise
* \param[in] other The other vector
* \return The element-wise maximum of this vector and \a other
*/
/**
* \fn Vector::max(T scalar) const
* \brief Calculate the maximum of this vector and \a scalar element-wise
* \param[in] scalar The scalar
* \return The element-wise maximum of this vector and \a scalar
*/
/**
* \fn Vector::dot(const Vector<T, Rows> &other) const
* \brief Compute the dot product

20
src/ipa/libipa/vector.h
View file

@ -148,6 +148,26 @@ public:
return apply(scalar, [](T a, T b) { return a / b; });
}
constexpr Vector min(const Vector &other) const
{
return apply(*this, other, [](T a, T b) { return std::min(a, b); });
}
constexpr Vector min(T scalar) const
{
return apply(*this, scalar, [](T a, T b) { return std::min(a, b); });
}
constexpr Vector max(const Vector &other) const
{
return apply(*this, other, [](T a, T b) { return std::max(a, b); });
}
constexpr Vector max(T scalar) const
{
return apply(*this, scalar, [](T a, T b) -> T { return std::max(a, b); });
}
constexpr T dot(const Vector<T, Rows> &other) const
{
T ret = 0;