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Add comments on handling of zero-sized B matrix in ?GELSY (Reference-LAPACK PR 833) (#4056) 

* Add comment related to zero-sized matrix B
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Martin Kroeker 2023-05-24 22:30:45 +02:00 committed by GitHub
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commit e728744bd6
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2
lapack-netlib/SRC/cgelsy.f
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@ -116,6 +116,7 @@
*> B is COMPLEX array, dimension (LDB,NRHS)
*> On entry, the M-by-NRHS right hand side matrix B.
*> On exit, the N-by-NRHS solution matrix X.
*> If M = 0 or N = 0, B is not referenced.
*> \endverbatim
*>
*> \param[in] LDB
@ -148,6 +149,7 @@
*> The effective rank of A, i.e., the order of the submatrix
*> R11. This is the same as the order of the submatrix T11
*> in the complete orthogonal factorization of A.
*> If NRHS = 0, RANK = 0 on output.
*> \endverbatim
*>
*> \param[out] WORK

2
lapack-netlib/SRC/dgelsy.f
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@ -115,6 +115,7 @@
*> B is DOUBLE PRECISION array, dimension (LDB,NRHS)
*> On entry, the M-by-NRHS right hand side matrix B.
*> On exit, the N-by-NRHS solution matrix X.
*> If M = 0 or N = 0, B is not referenced.
*> \endverbatim
*>
*> \param[in] LDB
@ -147,6 +148,7 @@
*> The effective rank of A, i.e., the order of the submatrix
*> R11. This is the same as the order of the submatrix T11
*> in the complete orthogonal factorization of A.
*> If NRHS = 0, RANK = 0 on output.
*> \endverbatim
*>
*> \param[out] WORK

2
lapack-netlib/SRC/sgelsy.f
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@ -115,6 +115,7 @@
*> B is REAL array, dimension (LDB,NRHS)
*> On entry, the M-by-NRHS right hand side matrix B.
*> On exit, the N-by-NRHS solution matrix X.
*> If M = 0 or N = 0, B is not referenced.
*> \endverbatim
*>
*> \param[in] LDB
@ -147,6 +148,7 @@
*> The effective rank of A, i.e., the order of the submatrix
*> R11. This is the same as the order of the submatrix T11
*> in the complete orthogonal factorization of A.
*> If NRHS = 0, RANK = 0 on output.
*> \endverbatim
*>
*> \param[out] WORK

2
lapack-netlib/SRC/zgelsy.f
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@ -116,6 +116,7 @@
*> B is COMPLEX*16 array, dimension (LDB,NRHS)
*> On entry, the M-by-NRHS right hand side matrix B.
*> On exit, the N-by-NRHS solution matrix X.
*> If M = 0 or N = 0, B is not referenced.
*> \endverbatim
*>
*> \param[in] LDB
@ -148,6 +149,7 @@
*> The effective rank of A, i.e., the order of the submatrix
*> R11. This is the same as the order of the submatrix T11
*> in the complete orthogonal factorization of A.
*> If NRHS = 0, RANK = 0 on output.
*> \endverbatim
*>
*> \param[out] WORK