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# -*- mode: perl; -*-
# test rounding, accuracy, precision and fallback, round_mode and mixing
# of classes
use strict;
use warnings;
use Test::More tests => 712 # tests in require'd file
+ 52; # tests in this file
use Math::BigInt only => 'Calc';
use Math::BigFloat;
our $mbi = 'Math::BigInt';
our $mbf = 'Math::BigFloat';
require './t/mbimbf.inc';
# some tests that won't work with subclasses, since the things are only
# guaranteed in the Math::Big(Int|Float) (unless subclass chooses to support
# this)
Math::BigInt->round_mode("even"); # reset for tests
Math::BigFloat->round_mode("even"); # reset for tests
is($Math::BigInt::rnd_mode, "even", '$Math::BigInt::rnd_mode = "even"');
is($Math::BigFloat::rnd_mode, "even", '$Math::BigFloat::rnd_mode = "even"');
my $x = eval '$mbi->round_mode("huhmbi");';
like($@, qr/^Unknown round mode 'huhmbi' at/,
'$mbi->round_mode("huhmbi")');
$x = eval '$mbf->round_mode("huhmbf");';
like($@, qr/^Unknown round mode 'huhmbf' at/,
'$mbf->round_mode("huhmbf")');
# old way (now with test for validity)
$x = eval '$Math::BigInt::rnd_mode = "huhmbi";';
like($@, qr/^Unknown round mode 'huhmbi' at/,
'$Math::BigInt::rnd_mode = "huhmbi"');
$x = eval '$Math::BigFloat::rnd_mode = "huhmbf";';
like($@, qr/^Unknown round mode 'huhmbf' at/,
'$Math::BigFloat::rnd_mode = "huhmbf"');
# see if accessor also changes old variable
$mbi->round_mode('odd');
is($Math::BigInt::rnd_mode, 'odd', '$Math::BigInt::rnd_mode = "odd"');
$mbf->round_mode('odd');
is($Math::BigInt::rnd_mode, 'odd', '$Math::BigInt::rnd_mode = "odd"');
foreach my $class (qw/Math::BigInt Math::BigFloat/) {
is($class->accuracy(5), 5, "set A ...");
is($class->precision(), undef, "... and now P must be cleared");
is($class->precision(5), 5, "set P ...");
is($class->accuracy(), undef, "... and now A must be cleared");
}
foreach my $class (qw/Math::BigInt Math::BigFloat/) {
my $x;
# Accuracy
# set and check the class accuracy
$class->accuracy(1);
is($class->accuracy(), 1, "$class has A of 1");
# a new instance gets the class accuracy
$x = $class->new(123);
is($x->accuracy(), 1, '$x has A of 1');
# set and check the instance accuracy
$x->accuracy(2);
is($x->accuracy(), 2, '$x has A of 2');
# change the class accuracy
$class->accuracy(3);
is($class->accuracy(), 3, "$class has A of 3");
# verify that the instance accuracy hasn't changed
is($x->accuracy(), 2, '$x still has A of 2');
# change the instance accuracy
$x->accuracy(undef);
is($x->accuracy(), undef, '$x now has A of undef');
# check the class accuracy
is($class->accuracy(), 3, "$class still has A of 3");
# change the class accuracy again
$class->accuracy(undef);
is($class->accuracy(), undef, "$class now has A of undef");
# Precision
# set and check the class precision
$class->precision(1);
is($class->precision(), 1, "$class has A of 1");
# a new instance gets the class precision
$x = $class->new(123);
is($x->precision(), 1, '$x has A of 1');
# set and check the instance precision
$x->precision(2);
is($x->precision(), 2, '$x has A of 2');
# change the class precision
$class->precision(3);
is($class->precision(), 3, "$class has A of 3");
# verify that the instance precision hasn't changed
is($x->precision(), 2, '$x still has A of 2');
# change the instance precision
$x->precision(undef);
is($x->precision(), undef, '$x now has A of undef');
# check the class precision
is($class->precision(), 3, "$class still has A of 3");
# change the class precision again
$class->precision(undef);
is($class->precision(), undef, "$class now has A of undef");
}
# bug with blog(Math::BigFloat, Math::BigInt)
$x = Math::BigFloat->new(100);
$x = $x->blog(Math::BigInt->new(10));
is($x, 2, 'bug with blog(Math::BigFloat, Math::BigInt)');
# bug until v1.88 for sqrt() with enough digits
for my $i (80, 88, 100) {
$x = Math::BigFloat->new("1." . ("0" x $i) . "1");
$x = $x->bsqrt;
is($x, 1, '$x->bsqrt() with many digits');
}
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