Fix integer overflow in sigma2 initialization for large datasets #21
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Convert N and J to numeric before multiplication to prevent overflow when N * J exceeds 2^31-1 (e.g., 4M cells × 20K genes = 80B).
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This pull request should Resolve #20 |
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Convert N and J to numeric before multiplication to prevent overflow when N * J exceeds 2^31-1 (e.g., 4M cells × 20K genes = 80B).