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Implemented a least squares fit of the bed equation for auto bed leveling.

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The code for the LSQ solver (qr_solve) is copyrighted by John Burkardt and released under LGPL here:
http://people.sc.fsu.edu/~%20jburkardt/c_src/qr_solve/qr_solve.html
(see qr_solve.cpp for further copyright information)
This commit is contained in:
fsantini
2013-12-06 21:46:25 +01:00
parent b64661070e
commit cc2925b705
4 changed files with 2075 additions and 2 deletions
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Marlin/qr_solve.h Normal file
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#include "Configuration.h"
#ifdef ACCURATE_BED_LEVELING
void daxpy ( int n, double da, double dx[], int incx, double dy[], int incy );
double ddot ( int n, double dx[], int incx, double dy[], int incy );
double dnrm2 ( int n, double x[], int incx );
void dqrank ( double a[], int lda, int m, int n, double tol, int *kr,
int jpvt[], double qraux[] );
void dqrdc ( double a[], int lda, int n, int p, double qraux[], int jpvt[],
double work[], int job );
int dqrls ( double a[], int lda, int m, int n, double tol, int *kr, double b[],
double x[], double rsd[], int jpvt[], double qraux[], int itask );
void dqrlss ( double a[], int lda, int m, int n, int kr, double b[], double x[],
double rsd[], int jpvt[], double qraux[] );
int dqrsl ( double a[], int lda, int n, int k, double qraux[], double y[],
double qy[], double qty[], double b[], double rsd[], double ab[], int job );
void dscal ( int n, double sa, double x[], int incx );
void dswap ( int n, double x[], int incx, double y[], int incy );
double *qr_solve ( int m, int n, double a[], double b[] );
#endif