Marlin_Firmware/Marlin/qr_solve.h

#include "Configuration.h"

#if ENABLED(AUTO_BED_LEVELING_GRID)

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);
void qr_solve(double x[], int m, int n, double a[], double b[]);

#endif