adds argument to routine yac_interp_weights_write_to_file which allows to specify how an already existing file is to be handled

Moritz Hanke authored 1 month ago and Nils-Arne Dreier committed 1 month ago

Co-authored-by: Nils-Arne Dreier <dreier@dkrz.de>

* returns interpolation information for raw data exchange in a CSR format

* yac_frac_mask_fallback_value is allowed to be nan, in that case results from comparison operations depend on the compiler optimisation -> special handling required

* free internal buffers of interp_method's

adds support for file based cell areas in SPMAP to configuration file and inter_stack_config interface