Programmer Guide/Command Reference/EVAL/rleqs: Difference between revisions
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:;<var>B</var>: right side vector or MxL matrix (for multiple solutions) | :;<var>B</var>: right side vector or MxL matrix (for multiple solutions) | ||
:;<var>alg</var>: select a LAPACK algorithm to be used | :;<var>alg</var>: select a LAPACK algorithm to be used | ||
::{|class="keinrahmen" | :::{|class="keinrahmen" | ||
|''alg''='''0''' || use DGESV if M=N and DGELS otherwise | |''alg''='''0''' ||... ||use DGESV if M=N and DGELS otherwise | ||
|- | |- | ||
|''alg''='''1''' || use always DGESV, M must be equal to N | |''alg''='''1''' ||... ||use always DGESV, M must be equal to N | ||
|- | |- | ||
|''alg''='''2''' || use always DGELS | |''alg''='''2''' ||... || use always DGELS | ||
|} | |} | ||
;Description: ... | ;Description: ... | ||
Revision as of 16:55, 12 April 2011
These functions implements an interface for the LAPACK functions DGESV, ZGESV, DGELS and ZGELS.
- Usage
rleqs(A, B {, alg}):- A
- left side MxN matrix x
- B
- right side vector or MxL matrix (for multiple solutions)
- alg
- select a LAPACK algorithm to be used
alg=0 ... use DGESV if M=N and DGELS otherwise alg=1 ... use always DGESV, M must be equal to N alg=2 ... use always DGELS
- Description
- ...
- Result
- ...
Note: The function cleqs(A, B {, alg}) has the same arguments and result as rleqs, but the vectors/matrices A, B and X are complex.
- See also
- rpoly, interp, rleqs, cleqs
