The class and characteristics of a function, and the number and types of arguments it requires, are determined by its function definition. These characteristics include:
+-------------------------------IBM Extension--------------------------------+
+----------------------------End of IBM Extension----------------------------+
The evaluation of any intrinsic function is not affected by the context in which it appears; in other words, function evaluation is not affected by operations or operands outside the function. However, evaluation of a function can be affected by the attributes of its arguments.
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