there're some macros in the udf such as nv_s, nv_d, nv_v, nv_vv....and what do they mean?

Are they inner functions in C program?or just in UDF,and i can't find any hint in help.

anyone can help me!

regards,

thank u very much!

you can not find some hint but you have the udf manual

try firs at the end of the manual in the index

normaly everithing is explained there

Thank you very much. I'll try to find my want...