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/*
Copyright (C) 2020 Fredrik Johansson
This file is part of FLINT.
FLINT is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version. See <https://www.gnu.org/licenses/>.
*/
#include "gr.h"
#include "gr_mat.h"
int
gr_mat_hilbert(gr_mat_t mat, gr_ctx_t ctx)
{
slong R, C, i, j;
slong sz = ctx->sizeof_elem;
int status = GR_SUCCESS;
R = gr_mat_nrows(mat, ctx);
C = gr_mat_ncols(mat, ctx);
/* todo: exploit symmetry */
for (i = 0; i < R; i++)
{
for (j = 0; j < C; j++)
{
status |= gr_one(GR_MAT_ENTRY(mat, i, j, sz), ctx);
status |= gr_div_ui(GR_MAT_ENTRY(mat, i, j, sz),
GR_MAT_ENTRY(mat, i, j, sz), i + j + 1, ctx);
}
}
return status;
}