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variable types in external C modules [message #22229]

Mon, 30 October 2000 19:38

D. Mattes
Messages: 14
Registered: May 1999

Junior Member

hello IDL gurus:

i am using call_external to run computations in external C modules. i
want to send arrays of different types to the C module and have them be
correctly declared in the C module. for example, if the IDL procedure
sends floats, then the C module needs to declare the incoming arguments as
floats, and be able to create some scratch memory of type float.
however, if the IDL procedure sends doubles, then the C module needs to
declare the variables as doubles. how can i determine the variable types
of the input arguments from within the C module?

thanks!
david

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