Add underdetermined (m < n) LQ support to zgels_gpu#89
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zgels_gpu previously only handled overdetermined (m >= n) systems via QR. This adds the LQ factorization path for underdetermined systems, computing the minimum-norm solution via gelqf_gpu + gelqs_gpu. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
zgels_gputo handle underdetermined systems (m < n) via LQ factorizationzgelqs_gpu(LQ solve) andzunmlq_gpu(apply Q from LQ), adapted from their QR counterpartsTest plan
testing_dgels_gpupasses for default (square/overdetermined) sizes🤖 Generated with Claude Code