#ifndef ULMAUX_H
#define ULMAUX_H

#include <stddef.h>         // for size_t, ptrdiff_t
#include <stdbool.h>        // for typedef bool
#include <stdio.h>          // for printf()

//-- Functions for benchmarking and testing ------------------------------------

// timer
double
walltime();

// random fill matrix
void
randDGeMatrix(size_t m, size_t n, bool withNan,
              double *A,
              ptrdiff_t incRowA, ptrdiff_t incColA);

// print matrix of doubles using format string fmt
void
printfDGeMatrix(const char * fmt, size_t m, size_t n,
                const double *A,
                ptrdiff_t incRowA, ptrdiff_t incColA);

// print matrix of doubles (using a default format)
void
printDGeMatrix(size_t m, size_t n,
               const double *A,
               ptrdiff_t incRowA, ptrdiff_t incColA);

// print matrix of size_ts
void
printIGeMatrix(size_t m, size_t n,
               const size_t *A,
               ptrdiff_t incRowA, ptrdiff_t incColA);

// absolute value of a ptrdiff_t value
inline size_t
ptrdiff_abs(ptrdiff_t x)
{
    return x>0 ? x : -x;
}

// random fill an array of doubles
void
dfill_nan(size_t bufsize, double *buf);

// random fill an array of size_t values
void
ifill_rand(size_t bufsize, size_t *buf);

//-- BLAS extensions -----------------------------------------------------------

// copy matrices
void
dgecopy(size_t m, size_t n,
        const double *A, ptrdiff_t incRowA, ptrdiff_t incColA,
        double *B, ptrdiff_t incRowB, ptrdiff_t incColB);

// axpy for matrices
void
dgeaxpy(size_t m, size_t n, double alpha,
        const double *X, ptrdiff_t incRowX, ptrdiff_t incColX,
        double *Y, ptrdiff_t incRowY, ptrdiff_t incColY);

// compute and return matrix (infinity) norm
double
dgenrm_inf(size_t m, size_t n,
           const double *A,
           ptrdiff_t incRowA, ptrdiff_t incColA);

#endif // ULMAUX_H