/*
Copyright (C) 2013 Mike Hansen
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 "fq_zech.h"
void
fq_zech_neg(fq_zech_t rop, const fq_zech_t op1, const fq_zech_ctx_t ctx)
{
if (op1->value == ctx->qm1)
{
rop->value = ctx->qm1;
return;
}
rop->value = op1->value + ctx->qm1o2;
if (rop->value >= ctx->qm1)
{
rop->value -= ctx->qm1;
}
}