giles 064ab2900b mk: sumo + producto — fold list to integer ...

Sum and product over a list of ground integers via fold + intarith.
Empty list yields the identity (0 for sum, 1 for product). Recurse
combines the head with the recursively-computed tail value via
pluso-i / *o-i.

9 new tests, 481/481 cumulative.

2026-05-08 12:14:15 +00:00

858 B

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