Computer Science – Programming Languages
Scientific paper
2008-10-07
Theory of Computing Systems, 50(2):313--328, 2012
Computer Science
Programming Languages
14 pages; error corrected, acknowledgement added; another error corrected, another acknowledgement added
Scientific paper
10.1007/s00224-010-9301-8
We perceive programs as single-pass instruction sequences. A single-pass instruction sequence under execution is considered to produce a behaviour to be controlled by some execution environment. Threads as considered in basic thread algebra model such behaviours. We show that all regular threads, i.e. threads that can only be in a finite number of states, can be produced by single-pass instruction sequences without jump instructions if use can be made of Boolean registers. We also show that, in the case where goto instructions are used instead of jump instructions, a bound to the number of labels restricts the expressiveness.
Bergstra Jan Aldert
Middelburg C. A.
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