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{s/c/d/z}geqrf: document workspace query for empty matrices#1304

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jschueller:issue257
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{s/c/d/z}geqrf: document workspace query for empty matrices#1304
jschueller wants to merge 1 commit into
Reference-LAPACK:masterfrom
jschueller:issue257

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Clarify that the workspace query returns a valid LWORK (>= 1) even when MIN(M,N) = 0. The code already handles this correctly; this is purely a documentation update.

Closes #257

Clarify that the workspace query returns a valid LWORK (>= 1) even
when MIN(M,N) = 0. The code already handles this correctly; this
is purely a documentation update.

Closes Reference-LAPACK#257
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GEQRF: document corner case of LWORK

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