SpUtil

header-only sparse matrix util library written in C

funcitons

SpUtil has 5 funcitons:

void SpUtil_read_mm_header(FILE* file, int* N, int* nnz)

read matrix market format file, and get matrix sizes N and nnz.

void SpUtil_mm2coo(FILE *file, int N, int nnz, int* row_index, int* col_index, double* val)

create COO from matrix market format file. SpUtil_read_mm_header must be executed before executing this function.

void SpUtil_coo2crs(int N, int nnz, const int* coo_row, const int* coo_col, const double* coo_val, int* row_ptr, int* col_ind, double* val){

create crs from coo.

void SpUtil_print_coo(int N, int nnz, int* row_ptr, int* col_ind, double* val)
void SpUtil_print_crs(int N, int nnz, int* row_ptr, int* col_ind, double* val)

dump matrix for debug.

test

cd test
make 
make run

complaints

I love C++, but this program is written in C.

This is because the C++ compiler of Japan's national supercomputer is not good enough.