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# -*- mode: perl; -*-
use strict;
use warnings;
use Test::More tests => 1012;
use Scalar::Util qw< refaddr >;
use Math::BigInt;
my ($x, $y);
note("bmuladd() as a class method");
$x = Math::BigInt -> bmuladd("2", "3", "5");
subtest '$x = Math::BigInt -> bmuladd("2", "3", "5");' => sub {
plan tests => 2;
is(ref($x), 'Math::BigInt', '$x is a Math::BigInt');
cmp_ok($x, "==", 11, '$x == 11');
};
note("bmuladd() as an instance method");
$x = Math::BigInt -> new("2"); $y = $x -> bmuladd("3", "5");
subtest '$x = Math::BigInt -> new("2"); $y = $x -> bmuladd("3", "5");' => sub {
plan tests => 4;
is(ref($x), 'Math::BigInt', '$x is a Math::BigInt');
is(ref($y), 'Math::BigInt', '$y is a Math::BigInt');
is(refaddr($x), refaddr($y), '$x and $y are the same object');
cmp_ok($x, "==", 11, '$x == 11');
};
# Check consistency of bmuladd() vs. bmul() + badd()
my @values = qw/ -Inf -3 -2 -1 0 1 2 3 Inf NaN /;
for my $a (@values) {
for my $b (@values) {
for my $c (@values) {
my $test = qq|Math::BigInt -> new("$a") -> bmuladd("$b", "$c")|
. qq| vs. Math::BigInt -> new("$a") -> bmul("$b")|
. qq| -> badd("$c")|;
$x = Math::BigInt -> new("$a") -> bmuladd("$b", "$c");
$y = Math::BigInt -> new("$a") -> bmul("$b") -> badd("$c");
subtest $test => sub {
plan tests => 3;
is(ref($x), 'Math::BigInt', '$x is a Math::BigInt');
is(ref($y), 'Math::BigInt', '$y is a Math::BigInt');
if ($x -> is_nan() && $y -> is_nan()) {
is($x, $y, '$x == $y');
} else {
cmp_ok($x, "==", $y, '$x == $y');
}
};
}
}
}
# Test when the same object appears more than once.
my $t;
for my $a (-2, 2) {
for my $b (-3, 3) {
$x = Math::BigInt -> new("$a"); $y = $x -> bmuladd("$b", $x);
$t = qq|\$x = Math::BigInt->new("$a"); \$y = \$x -> bmuladd("$b", \$x);|;
subtest $t => sub {
plan tests => 2;
is(ref($x), 'Math::BigInt', 'class of $x');
cmp_ok($x, "==", $a * $b + $a, 'value of $x');
};
$x = Math::BigInt -> new("$a"); $y = $x -> bmuladd($x, "$b");
$t = qq|\$x = Math::BigInt->new("$a"); \$y = \$x -> bmuladd(\$x, "$b");|;
subtest $t => sub {
plan tests => 2;
is(ref($x), 'Math::BigInt', 'class of $x');
cmp_ok($x, "==", $a * $a + $b, 'value of $x');
};
}
$x = Math::BigInt -> new("$a"); $y = $x -> bmuladd($x, $x);
$t = qq|\$x = Math::BigInt->new("$a"); \$y = \$x -> bmuladd(\$x, \$x);|;
subtest $t => sub {
plan tests => 2;
is(ref($x), 'Math::BigInt', 'class of $x');
cmp_ok($x, "==", $a * $a + $a, 'value of $x');
};
}
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