Function parity

test/compute-engine/compile.test.ts:802–808

(src: any, vars: Record<string, number>, digits = 10)

      });
    }
  });
});

// REVIEW.md E1: Range with symbolic bounds compiled to
// `Array.from({length: NaN})` because the guard tested `parseFloat(...) !==
// null`, but parseFloat returns NaN (never null) for symbolic bounds — so the
// constant-length branch always won and every symbolic Range yielded `[]`.
describe('COMPILE Range with symbolic bounds (E1)', () => {
  it('Range(1, n) emits a runtime length, not NaN', () => {
    const code = compile(ce.expr(['Range', 1, 'n']))!.code;