[PATCH 07/11] ipa: libipa: pwl: Add a size() function

[Paul Elder]

On Thu, Jun 13, 2024 at 04:39:40AM +0300, Laurent Pinchart wrote:
> Add a size() function to the Pwl class to return the number of points in
> the piecewise linear function. This is useful, for instance, to validate
> that all points added with append() or prepend() have been taken into
> account.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>

Reviewed-by: Paul Elder <paul.elder at ideasonboard.com>

> ---
>  src/ipa/libipa/pwl.cpp | 6 ++++++
>  src/ipa/libipa/pwl.h   | 2 ++
>  2 files changed, 8 insertions(+)
> 
> diff --git a/src/ipa/libipa/pwl.cpp b/src/ipa/libipa/pwl.cpp
> index d8ea92be0a86..8b437dd1a650 100644
> --- a/src/ipa/libipa/pwl.cpp
> +++ b/src/ipa/libipa/pwl.cpp
> @@ -188,6 +188,12 @@ void Pwl::prepend(double x, double y, const double eps)
>   * \return True if there are no points in the function, false otherwise
>   */
>  
> +/**
> + * \fn Pwl::size() const
> + * \brief Retrieve the number of points in the piecewise linear function
> + * \return The number of points in the piecewise linear function
> + */
> +
>  /**
>   * \brief Get the domain of the piecewise linear function
>   * \return An interval representing the domain
> diff --git a/src/ipa/libipa/pwl.h b/src/ipa/libipa/pwl.h
> index b4de00cf88f0..028342314fca 100644
> --- a/src/ipa/libipa/pwl.h
> +++ b/src/ipa/libipa/pwl.h
> @@ -52,6 +52,8 @@ public:
>  	void append(double x, double y, double eps = 1e-6);
>  
>  	bool empty() const { return points_.empty(); }
> +	size_t size() const { return points_.size(); }
> +
>  	Interval domain() const;
>  	Interval range() const;
>