Details

This message is generated when compiled evaluation of the indicated function for arguments of the given type is not supported.
This message can be generated by compilation of a variety of functions, such as Floor and Im, that are meaningful only for certain types of arguments.
Off[message] switches off the message; On[message] switches it on. For example: Off[Compile::cptype].

Examples

A warning is generated because Floor cannot be compiled if the argument is complex:

Wolfram Language code: Compile[{{p, _Complex}}, Floor[p]]

The Im function is not compiled if the argument is a logical variable:

Wolfram Language code: Compile[{{p, True | False}}, Im[p]]

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