Is The Current Execution in Parallel Mode

Syntax
flag = thread_alloc::in_parallel()

Purpose
Some of the thread_alloc allocation routines have different specifications for parallel (not sequential) execution mode. This routine enables you to determine if the current execution mode is sequential or parallel.

flag
The return value has prototype       bool flag  It is true if the current execution is in parallel mode (possibly multi-threaded) and false otherwise (sequential mode).

Example