I just cut-n-pasted the Bigint examples into a cygwin window, expecting them all to pass.

The result was:

bash$ perl -Mbigint -le 'print sqrt(33)'
5
bash$ perl -Mbigint -le 'print 2*255'
510
bash$ perl -Mbigint -le 'print 4.5+2*255'
514
bash$ perl -Mbigint -le 'print 3/7 + 5/7 + 8/3'
2
bash$ perl -Mbigint -le 'print 123->is_odd()'
1
bash$ perl -Mbigint -le 'print log(2)'
Can't use an undefined value as an ARRAY reference at /usr/lib/
perl5/5.8/Math/Bi
gInt/Calc.pm line 1338.
bash$ perl -Mbigint -le 'print 2 ** 0.5'
1
bash$ perl -Mbigint=a,65 -le 'print 2 ** 0.2'
1
bash$ perl -Mbignum=a,65,l,GMP -le 'print 7 ** 7777'
"l" is not exported by the bignum module
Can't continue after import errors at /usr/lib/perl5/5.8/bignum.pm
line 171
BEGIN failed--compilation aborted.
bash$

<font face="Courier, Monospaced">I guess GMP is missing but why did th
+e 'print log(2)' example fail?

<font face="Courier, Monospaced">Perl information:

<font face="Courier, Monospaced">bash$ perl -V
Summary of my perl5 (revision 5 version 8 subversion 7) configuration:
  Platform:
    osname=cygwin, osvers=1.5.18(0.13242), archname=cygwin-thread-
multi-64int
    uname='cygwin_nt-5.1 inspiron 1.5.18(0.13242) 2005-07-02 20:30
i686 unknown
unknown cygwin '
    config_args='-de -Dmksymlinks -Duse64bitint -Dusethreads -
Uusemymalloc -Dopt
imize=-O3 -Dman3ext=3pm -Dusesitecustomize'
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=define use5005threads=undef useithreads=define
usemultiplicity=de
fine
    useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
    use64bitint=define use64bitall=undef uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='gcc', ccflags ='-DPERL_USE_SAFE_PUTENV -fno-strict-aliasing -
pipe -I/usr
/local/include',
    optimize='-O3',
    cppflags='-DPERL_USE_SAFE_PUTENV -fno-strict-aliasing -pipe -I/usr
+/
local/inc
lude'
    ccversion='', gccversion='3.4.4 (cygming special) (gdc 0.12, using
dmd 0.125
)', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=12345678
    d_longlong=define, longlongsize=8, d_longdbl=define,
longdblsize=12
    ivtype='long long', ivsize=8, nvtype='double', nvsize=8,
Off_t='off_t', lsee
ksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='ld2', ldflags =' -s -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib
    libs=-lgdbm -ldb -lcrypt -lgdbm_compat
    perllibs=-lcrypt -lgdbm_compat
    libc=/usr/lib/libc.a, so=dll, useshrplib=true, libperl=libperl.a
    gnulibc_version=''
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=dll, d_dlsymun=undef, ccdlflags=' -s'
    cccdlflags=' ', lddlflags=' -s -L/usr/local/lib'

<font face="Courier, Monospaced">Characteristics of this binary (from 
+libperl):
  Compile-time options: MULTIPLICITY USE_ITHREADS USE_64_BIT_INT
                        USE_LARGE_FILES USE_SITECUSTOMIZE
                        PERL_IMPLICIT_CONTEXT
  Locally applied patches:
        SPRINTF0 - fixes for sprintf formatting issues - CVE-2005-3962
  Built under cygwin
  Compiled at Dec 30 2005 02:44:25
  %ENV:
    CYGWIN=""
  @INC:
    /usr/lib/perl5/5.8/cygwin
    /usr/lib/perl5/5.8
    /usr/lib/perl5/site_perl/5.8/cygwin
    /usr/lib/perl5/site_perl/5.8
    /usr/lib/perl5/site_perl/5.8/cygwin
    /usr/lib/perl5/site_perl/5.8
    /usr/lib/perl5/vendor_perl/5.8/cygwin
    /usr/lib/perl5/vendor_perl/5.8
    /usr/lib/perl5/vendor_perl/5.8/cygwin
    /usr/lib/perl5/vendor_perl/5.8
    .
bash$
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