ipa: libipa: pwl: Add a size() function

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@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/ipa/libipa/pwl.cpp b/src/ipa/libipa/pwl.cpp
index d8ea92be..8b437dd1 100644
--- a/src/ipa/libipa/pwl.cpp
+++ b/src/ipa/libipa/pwl.cpp
@@ -189,6 +189,12 @@ void Pwl::prepend(double x, double y, const double eps)
  */
 
 /**
+ * \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
  */