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/*
Copyright (C) 2021 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 "arf.h"
#include "fexpr.h"
#include "fexpr_builtin.h"
void
fexpr_set_d(fexpr_t res, double x)
{
arf_t t;
arf_init(t);
arf_set_d(t, x); /* no need to free */
fexpr_set_arf(res, t);
}
void
fexpr_set_re_im_d(fexpr_t res, double x, double y)
{
if (y == 0.0)
{
fexpr_set_d(res, x);
}
else if (x == 0.0)
{
if (y == 1.0)
{
fexpr_set_symbol_builtin(res, FEXPR_NumberI);
}
else if (y == -1.0)
{
fexpr_set_symbol_builtin(res, FEXPR_NumberI);
fexpr_neg(res, res);
}
else
{
fexpr_t im, t;
fexpr_init(im);
fexpr_init(t);
fexpr_set_d(im, y);
fexpr_set_symbol_builtin(t, FEXPR_NumberI);
fexpr_mul(res, im, t);
fexpr_clear(im);
fexpr_clear(t);
}
}
else
{
fexpr_t re, im, t;
fexpr_init(re);
fexpr_init(im);
fexpr_init(t);
fexpr_set_d(re, x);
fexpr_set_d(im, y);
fexpr_set_symbol_builtin(t, FEXPR_NumberI);
fexpr_mul(res, im, t);
fexpr_swap(t, res);
fexpr_add(res, re, t);
fexpr_clear(re);
fexpr_clear(im);
fexpr_clear(t);
}
}