flint-sys 0.9.0

Bindings to the FLINT C library
Documentation 
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/*
    Copyright (C) 2019-2021 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 <string.h>
#include "mpoly.h"
#include "fmpq_mpoly.h"

int fmpq_mpoly_set_str_pretty(fmpq_mpoly_t poly, const char * str,
                                    const char** x, const fmpq_mpoly_ctx_t ctx)
{
    int ret;
    slong i;
    fmpq_mpoly_t val;
    mpoly_parse_t E;
    char dummy[FLINT_BITS/2];

    mpoly_void_ring_init_fmpq_mpoly_ctx(E->R, ctx);
    mpoly_parse_init(E);

    fmpq_mpoly_init(val, ctx);
    for (i = 0; i < ctx->zctx->minfo->nvars; i++)
    {
        fmpq_mpoly_gen(val, i, ctx);
        if (x == NULL)
        {
            flint_sprintf(dummy, "x%wd", i + 1);
            mpoly_parse_add_terminal(E, dummy, (const void *)val);
        }
        else
        {
            mpoly_parse_add_terminal(E, x[i], (const void *)val);
        }
    }
    fmpq_mpoly_clear(val, ctx);

    ret = mpoly_parse_parse(E, poly, str, strlen(str));

    mpoly_parse_clear(E);

    return ret;
}