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psb_cd_get_global_cols -- Get number of global cols

nr = psb_cd_get_global_cols(desc)

Type:
Asynchronous.
On Entry
desc
the communication descriptor.
Scope: local.
Type: required.
Intent: in.
Specified as: a structured data of type descdatapsb_desc_type.

On Return
Function value
The number of global cols in the mesh