flint-sys 0.9.0

Bindings to the FLINT C library
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34

/*
    Copyright (C) 2021 Daniel Schultz

    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 "mpoly.h"
#include "gr_mpoly.h"

/* todo: should have an
   mpoly_monomial_index_pfmpz function */

int gr_mpoly_get_coeff_scalar_ui(gr_ptr c, const gr_mpoly_t A,
                            const ulong * exp, gr_mpoly_ctx_t ctx)
{

    slong index;
    index = mpoly_monomial_index_ui(A->exps, A->bits, A->length, exp, GR_MPOLY_MCTX(ctx));

    if (index < 0)
    {
        return gr_zero(c, GR_MPOLY_CCTX(ctx));
    }
    else
    {
        FLINT_ASSERT(index < A->length);
        return gr_set(c, GR_ENTRY(A->coeffs, index, GR_MPOLY_CCTX(ctx)->sizeof_elem), GR_MPOLY_CCTX(ctx));
    }
}