cobcal74 - expression evaluator in cob74, runs in tk4-
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manny juan
Oct 18, 2025, 1:31:27 AM10/18/25
to The Hercules S/370, ESA/390, and z/Series Emulator
I’ve released cobcal74 — a pure COBOL-74 arithmetic expression evaluator that runs unmodified on TK4- (MVS 3.8j)
and GNU COBOL. It implements the shunting-yard algorithm, supports
unary minus (in classic style), and includes a full test suite via JCL.
GitHub: https://github.com/manyone/cobcal74
Feedback welcome from fellow MVS/COBOL tinkerers!
GitHub: https://github.com/manyone/cobcal74
Feedback welcome from fellow MVS/COBOL tinkerers!
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