1#!/usr/bin/perl -w 2 3# Test broot function (and bsqrt() function, since it is used by broot()). 4 5# It is too slow to be simple included in bigfltpm.inc, where it would get 6# executed 3 times. 7 8# But it is better to test the numerical functionality, instead of not testing 9# it at all. 10 11use Test; 12use strict; 13 14BEGIN 15 { 16 $| = 1; 17 # to locate the testing files 18 my $location = $0; $location =~ s/bigroot.t//i; 19 if ($ENV{PERL_CORE}) 20 { 21 # testing with the core distribution 22 @INC = qw(../lib); 23 } 24 unshift @INC, '../lib'; 25 if (-d 't') 26 { 27 chdir 't'; 28 require File::Spec; 29 unshift @INC, File::Spec->catdir(File::Spec->updir, $location); 30 } 31 else 32 { 33 unshift @INC, $location; 34 } 35 print "# INC = @INC\n"; 36 37 plan tests => 4 * 2; 38 } 39 40use Math::BigFloat; 41use Math::BigInt; 42 43my $cl = "Math::BigFloat"; 44my $c = "Math::BigInt"; 45 46# 2 ** 240 = 47# 1766847064778384329583297500742918515827483896875618958121606201292619776 48 49# takes way too long 50#test_broot ('2','240', 8, undef, '1073741824'); 51#test_broot ('2','240', 9, undef, '106528681.3099908308759836475139583940127'); 52#test_broot ('2','120', 9, undef, '10321.27324073880096577298929482324664787'); 53#test_broot ('2','120', 17, undef, '133.3268493632747279600707813049418888729'); 54 55test_broot ('2','120', 8, undef, '32768'); 56test_broot ('2','60', 8, undef, '181.0193359837561662466161566988413540569'); 57test_broot ('2','60', 9, undef, '101.5936673259647663841091609134277286651'); 58test_broot ('2','60', 17, undef, '11.54672461623965153271017217302844672562'); 59 60sub test_broot 61 { 62 my ($x,$n,$y,$scale,$result) = @_; 63 64 my $s = $scale || 'undef'; 65 print "# Try: $cl $x->bpow($n)->broot($y,$s) == $result:\n"; 66 ok ($cl->new($x)->bpow($n)->broot($y,$scale),$result); 67 $result =~ s/\..*//; 68 print "# Try: $c $x->bpow($n)->broot($y,$s) == $result:\n"; 69 ok ($c->new($x)->bpow($n)->broot($y,$scale),$result); 70 } 71 72