mymath.h

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#pragma once
 
#include "myarr.h"
 
#include <stddef.h>
 
void transpone(double* arr, unsigned int Nrows, unsigned int Ncols);
 
void invert(double* arr, unsigned int Nrows, unsigned int Ncols);
 
double* mulmat(const double* matrix0,
               unsigned int Nrows,
               unsigned int Ncols,
               const double* matrix1,
               unsigned int Mrows,
               unsigned int Mcols);
 
void matlinreg(double coeffs[2],
               const double* xmat,
               unsigned int Nrows,
               unsigned int Ncols,
               double* vec,
               const double* weight);
 
void fitNpeaks(double* intercept,
               double* slope,
               unsigned int curPos,
               const struct myarr* maxvals,
               const struct myarr* maxes,
               const struct myarr* subpos,
               unsigned int npeaks,
               double SDthreshold);
 
void fastlinreg(double coeffs[2],
                const double* xmat,
                unsigned int Npoints,
                const double* vec,
                const double* weightArr);
 
size_t getmaxpos(const int* array, size_t ArrayLength);
 
void linreg(const double* xarr,
            const double* yarr,
            size_t ArrayLength,
            double* intercept,
            double* slope,
            double* stdev);
 
int shiftHalf(size_t value, size_t ArrayLength);