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russell@unturf.com 6e9d3ea52f isqrt: add integer square root builtin to all three impls 
Semantics: (isqrt n) → floor(sqrt(n)). Negative argument errors.
Matches Python 3.8+ math.isqrt and R7RS exact-integer-sqrt contract.

- Python: wraps math.isqrt via lambda registration
- C: hand-rolled bit-by-bit algorithm in bi_isqrt (O(log n), no FPU)
- asm: new BI_ISQRT=109, bit-by-bit algorithm in integer registers
       (%r8/%r9/%r10). Negative input → stderr + exit(1) like other
       errors. GC builtin constants bumped to 110-114.

Tests:
- tests/functional.lsp: 7 shared tests (0, 1, perfect squares, floor
  cases, large values). Python + C now 196 each (was 189).
- asm/test.sh: 5 asm-local tests. asm suite now 142 (was 137).

MOAD: all three implementations O(log n), no O(N²) hazards.
2026-04-20 08:50:24 -04:00
..
bench-3way.sh rename: uncommonlisp -> lumbda throughout the repo 2026-04-19 10:20:11 -04:00
bench-gc-adaptive.sh rename: uncommonlisp -> lumbda throughout the repo 2026-04-19 10:20:11 -04:00
bench-gc-arena.sh rename: uncommonlisp -> lumbda throughout the repo 2026-04-19 10:20:11 -04:00
bench-gc-http.sh rename: uncommonlisp -> lumbda throughout the repo 2026-04-19 10:20:11 -04:00
bench-gc-memory.sh rename: uncommonlisp -> lumbda throughout the repo 2026-04-19 10:20:11 -04:00
bench-hashset.sh rename: uncommonlisp -> lumbda throughout the repo 2026-04-19 10:20:11 -04:00
bench-lumbda-www.sh lumbda-www: asm-gc static file server for lumbda.com + caddy race 2026-04-19 12:12:59 -04:00
bench-proof.sh rename: uncommonlisp -> lumbda throughout the repo 2026-04-19 10:20:11 -04:00
bench-www-race.sh lumbda-www: sendfile(2) primitive + adaptive preload — matches caddy throughput at 9x less RSS 2026-04-19 12:41:40 -04:00
functional.lsp isqrt: add integer square root builtin to all three impls 2026-04-20 08:50:24 -04:00
portal-benchmark.sh rename: uncommonlisp -> lumbda throughout the repo 2026-04-19 10:20:11 -04:00
portal-cross-load.lsp asm/c/py: add (load), ports, write-file/file->string — full cross-impl parity 2026-04-16 16:37:40 -04:00
portal-cross-save.lsp asm/c/py: add (load), ports, write-file/file->string — full cross-impl parity 2026-04-16 16:37:40 -04:00
portal-cross-test.sh rename: uncommonlisp -> lumbda throughout the repo 2026-04-19 10:20:11 -04:00
portal-exchange.lsp rename: uncommonlisp -> lumbda throughout the repo 2026-04-19 10:20:11 -04:00
portal-formats.lsp rename: uncommonlisp -> lumbda throughout the repo 2026-04-19 10:20:11 -04:00
rpc-chain-bench.sh rename: uncommonlisp -> lumbda throughout the repo 2026-04-19 10:20:11 -04:00
web-benchmark.sh rename: uncommonlisp -> lumbda throughout the repo 2026-04-19 10:20:11 -04:00