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|
#!perl
use strict;
use warnings;
use Test::More tests => 792;
use Math::BigInt;
while (<DATA>) {
s/#.*$//; # remove comments
s/\s+$//; # remove trailing whitespace
next unless length; # skip empty lines
my ($x_str, $mant_str, $expo_str) = split /:/;
note(qq|\n\$x = Math::BigInt -> new("$x_str");|,
qq| (\$m, \$e) = \$x -> sparts();\n\n|);
{
my $x = Math::BigInt -> new($x_str);
my ($mant_got, $expo_got) = $x -> sparts();
isa_ok($mant_got, "Math::BigInt");
isa_ok($expo_got, "Math::BigInt");
is($mant_got, $mant_str, "value of mantissa");
is($expo_got, $expo_str, "value of exponent");
is($x, $x_str, "input is unmodified");
}
note(qq|\n\$x = Math::BigInt -> new("$x_str");|,
qq| \$m = \$x -> sparts();\n\n|);
{
my $x = Math::BigInt -> new($x_str);
my $mant_got = $x -> sparts();
isa_ok($mant_got, "Math::BigInt");
is($mant_got, $mant_str, "value of mantissa");
is($x, $x_str, "input is unmodified");
}
}
# Verify that the accuracy of the significand and the exponent depends on the
# accuracy of the invocand, if set, not the class.
note(qq|\nVerify that accuracy depends on invocand, not class.\n\n|);
{
Math::BigInt -> accuracy(20);
my $x = Math::BigInt -> new("3"); # accuracy is 20
$x -> accuracy(10); # reduce accuracy to 10
my ($mant, $expo) = $x -> sparts();
cmp_ok($mant, '==', 3, "value of significand");
cmp_ok($expo, '==', 0, "value of exponent");
cmp_ok($mant -> accuracy(), '==', 10, "accuracy of significand");
cmp_ok($expo -> accuracy(), '==', 20, "accuracy of exponent");
}
note(qq|\nVerify that precision depends on invocand, not class.\n\n|);
{
Math::BigInt -> precision(20);
my $x = Math::BigInt -> new("3"); # precision is 20
$x -> precision(10); # reduce precision to 10
my ($mant, $expo) = $x -> sparts();
cmp_ok($mant, '==', 3, "value of significand");
cmp_ok($expo, '==', 0, "value of exponent");
cmp_ok($mant -> precision(), '==', 10, "precision of significand");
cmp_ok($expo -> precision(), '==', 20, "precision of exponent");
}
__DATA__
NaN:NaN:NaN
inf:inf:inf
-inf:-inf:inf
0:0:0
# positive numbers
1:1:0
10:1:1
100:1:2
1000:1:3
10000:1:4
100000:1:5
1000000:1:6
10000000:1:7
100000000:1:8
1000000000:1:9
10000000000:1:10
100000000000:1:11
1000000000000:1:12
12:12:0
120:12:1
1200:12:2
12000:12:3
120000:12:4
1200000:12:5
12000000:12:6
120000000:12:7
1200000000:12:8
12000000000:12:9
120000000000:12:10
1200000000000:12:11
123:123:0
1230:123:1
12300:123:2
123000:123:3
1230000:123:4
12300000:123:5
123000000:123:6
1230000000:123:7
12300000000:123:8
123000000000:123:9
1230000000000:123:10
1234:1234:0
12340:1234:1
123400:1234:2
1234000:1234:3
12340000:1234:4
123400000:1234:5
1234000000:1234:6
12340000000:1234:7
123400000000:1234:8
1234000000000:1234:9
3141592:3141592:0
# negativ: numbers
-1:-1:0
-10:-1:1
-100:-1:2
-1000:-1:3
-10000:-1:4
-100000:-1:5
-1000000:-1:6
-10000000:-1:7
-100000000:-1:8
-1000000000:-1:9
-10000000000:-1:10
-100000000000:-1:11
-1000000000000:-1:12
-12:-12:0
-120:-12:1
-1200:-12:2
-12000:-12:3
-120000:-12:4
-1200000:-12:5
-12000000:-12:6
-120000000:-12:7
-1200000000:-12:8
-12000000000:-12:9
-120000000000:-12:10
-1200000000000:-12:11
-123:-123:0
-1230:-123:1
-12300:-123:2
-123000:-123:3
-1230000:-123:4
-12300000:-123:5
-123000000:-123:6
-1230000000:-123:7
-12300000000:-123:8
-123000000000:-123:9
-1230000000000:-123:10
-1234:-1234:0
-12340:-1234:1
-123400:-1234:2
-1234000:-1234:3
-12340000:-1234:4
-123400000:-1234:5
-1234000000:-1234:6
-12340000000:-1234:7
-123400000000:-1234:8
-1234000000000:-1234:9
-3141592:-3141592:0
|
