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|
# -*- mode: perl; -*-
use strict;
use warnings;
use Test::More tests => 99;
use Math::BigInt;
my $class = "Math::BigInt";
use Math::Complex ();
my $inf = $Math::Complex::Inf;
my $nan = $inf - $inf;
# The following is used to compute the data at the end of this file.
if (0) {
for my $x (-$inf, -64, -3, -2, -1, 0, 1, 2, 3, 64, $inf) {
for my $y (-$inf, -3, -2, -1, 0, 1, 2, 3, $inf) {
# The exceptions here are based on Wolfram Alpha,
# https://www.wolframalpha.com/
my $z = $x == -$inf && $y == 0 ? $nan
: $x == $inf && $y == 0 ? $nan
: $x == -1 && $y == -$inf ? $nan
: $x == -1 && $y == $inf ? $nan
: int($x ** $y);
# Unfortunately, Math::Big* uses "inf", not "Inf" as Perl.
printf "%s\n", join ":", map { $_ == $inf ? "inf"
: $_ == -$inf ? "-inf"
: $_ } $x, $y, $z;
}
}
exit;
}
while (<DATA>) {
s/#.*$//; # remove comments
s/\s+$//; # remove trailing whitespace
next unless length; # skip empty lines
my @args = split /:/;
my $want = pop @args;
my ($x, $y, $z);
my $test = qq|\$x = $class -> new("$args[0]"); |
. qq|\$y = $class -> new("$args[1]"); |
. qq|\$z = \$x -> bpow(\$y)|;
eval "$test";
die $@ if $@;
subtest $test => sub {
plan tests => 5;
is(ref($x), $class, "\$x is still a $class");
is(ref($y), $class, "\$y is still a $class");
is($y, $args[1], "\$y is unmodified");
is(ref($z), $class, "\$z is a $class");
is($z, $want, "\$z has the right value");
};
}
__DATA__
-inf:-inf:0
-inf:-3:0
-inf:-2:0
-inf:-1:0
-inf:0:NaN
-inf:1:-inf
-inf:2:inf
-inf:3:-inf
-inf:inf:inf
-64:-inf:0
-64:-3:0
-64:-2:0
-64:-1:0
-64:0:1
-64:1:-64
-64:2:4096
-64:3:-262144
-64:inf:inf
-3:-inf:0
-3:-3:0
-3:-2:0
-3:-1:0
-3:0:1
-3:1:-3
-3:2:9
-3:3:-27
-3:inf:inf
-2:-inf:0
-2:-3:0
-2:-2:0
-2:-1:0
-2:0:1
-2:1:-2
-2:2:4
-2:3:-8
-2:inf:inf
-1:-inf:NaN
-1:-3:-1
-1:-2:1
-1:-1:-1
-1:0:1
-1:1:-1
-1:2:1
-1:3:-1
-1:inf:NaN
0:-inf:inf
0:-3:inf
0:-2:inf
0:-1:inf
0:0:1
0:1:0
0:2:0
0:3:0
0:inf:0
1:-inf:1
1:-3:1
1:-2:1
1:-1:1
1:0:1
1:1:1
1:2:1
1:3:1
1:inf:1
2:-inf:0
2:-3:0
2:-2:0
2:-1:0
2:0:1
2:1:2
2:2:4
2:3:8
2:inf:inf
3:-inf:0
3:-3:0
3:-2:0
3:-1:0
3:0:1
3:1:3
3:2:9
3:3:27
3:inf:inf
64:-inf:0
64:-3:0
64:-2:0
64:-1:0
64:0:1
64:1:64
64:2:4096
64:3:262144
64:inf:inf
inf:-inf:0
inf:-3:0
inf:-2:0
inf:-1:0
inf:0:NaN
inf:1:inf
inf:2:inf
inf:3:inf
inf:inf:inf
|
