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/*
Copyright (C) 2021 Fredrik Johansson
This file is part of Calcium.
Calcium 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 2.1 of the License, or
(at your option) any later version. See <http://www.gnu.org/licenses/>.
*/
#include "fexpr.h"
void
fexpr_call_vec(fexpr_t res, const fexpr_t f, fexpr_srcptr args, slong len)
{
if (len == 0)
{
fexpr_call0(res, f);
}
else if (len == 1)
{
fexpr_call1(res, f, args);
}
else if (len == 2)
{
fexpr_call2(res, f, args, args + 1);
}
else if (len == 3)
{
fexpr_call3(res, f, args, args + 1, args + 2);
}
else if (len == 4)
{
fexpr_call4(res, f, args, args + 1, args + 2, args + 3);
}
else
{
slong i, f_size, args_size, index_size, size, pos, arg_size;
mp_ptr out;
f_size = fexpr_size(f);
args_size = 0;
for (i = 0; i < len; i++)
args_size += fexpr_size(args + i);
/* write index:
data[1] = nargs
data[2] = position of f
data[3], data[4], ..., positions of every 1/4 args for random access */
index_size = 2 + (len + 4 - 1) / 4;
size = 1 + index_size + f_size + args_size;
fexpr_fit_size(res, size);
out = res->data;
out[0] = FEXPR_TYPE_CALLN | (size << FEXPR_TYPE_BITS);
out[1] = len;
pos = 1 + index_size;
out[2] = pos;
flint_mpn_copyi(out + pos, f->data, f_size);
pos += f_size;
for (i = 0; i < len; i++)
{
if (i % 4 == 0)
out[3 + i / 4] = pos;
arg_size = fexpr_size(args + i);
flint_mpn_copyi(out + pos, args[i].data, arg_size);
pos += arg_size;
}
}
}
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