# t/12_dmul-dadd.t - dmul and dadd tests
#
# Copyright (C) 2017 Patrick McDermott
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see .
use strict;
use warnings;
use Test::More;
use Math::Decimal::FastPP;
plan("tests" => 2);
# https://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html#700
is(dadd(dmul(3.34, 3.34), dmul(-4, dmul(1.22, 2.28))), ".0292",
"sum of products");
note("Using native floating-point arithmetic, 3.34*3.34 + -4*1.22*2.28 = " .
(3.34*3.34 + -4*1.22*2.28) . " (should be 0.0292)");
is(dadd(dmul(3.3, 3.3), dmul(-4, dmul(1.2, 2.2))), ".33", "sum of products");
note("Using native floating-point arithmetic, 3.3*3.3 + -4*1.2*2.2 = " .
(3.3*3.3 + -4*1.2*2.2) . " (should be 0.33)");