Very interesting! This will help me get started with OpenMP, which I've been meaning to do for a while now.

Unfortunately, strtok is not thread-safe e.g. strtok(NULL, "\n") causing segfault. So I factored out strtok.

Ha ha, that I used strtok at all is an indication of how desperate I was, given I singled this function out for a special dishonourable mention at On Interfaces and APIs. :)

To round out this section, notice that the ANSI C strtok function has a shocker of an interface: it surprises by writing NULLs into the input string being tokenized; the first call has different semantics to subsequent calls (distinguished by special-case logic on the value of its first parameter); and it stores state between calls so that only one sequence of calls can be active at a time (bad enough in a single-threaded environment, but so intolerable in multi-threaded and signal handler (reentrant) environments that the POSIX threads committee invented a replacement strtok_r function).

In reply to Re^7: Rosetta Code: Long List is Long (faster - vec - OpenMP) by eyepopslikeamosquito
in thread Rosetta Code: Long List is Long by eyepopslikeamosquito

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