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Removes extrapolation and migrates to absolute timestamps.
The read API stays the same, relative read times are internally converted to absolute times.
Some time-related functions and arguments have been renamed.

Tests in cplscheme, accelerations, and time were migrated to absolute timestamps.
Some timestamps in integration tests had to be changed from the end to the start of the time window.
This may need some further investigation.

Still needs to solve data storage for various cases #1821

Co-authored-by: Frédéric Simonis <>
Co-authored-by: Benjamin Uekermann <>

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preCICE stands for Precise Code Interaction Coupling Environment. Its main component is a library that can be used by simulation programs to be coupled together in a partitioned way, enabling multi-physics simulations, such as fluid-structure interaction.

If you are new to preCICE, please have a look at our documentation and at You may also prefer to get and install a binary package for the latest release (main branch).

preCICE overview

preCICE is an academic project, developed at the Technical University of Munich and at the University of Stuttgart. If you use preCICE, please cite us.