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# file: printf.pl
printf "%4.4f\n",   3.14159;
...
printf "%4.4qf\n",  3.14159;
printf "%4.4Lf\n",  3.14159;
printf "%4.4llf\n", 3.14159;

$ /usr/bin/perl5.6.1 printf.pl 
3.1416
...
%4.4qf
3.1416
3.1416

Summary of my perl5 (revision 5.0 version 6 subversion 1) configuratio
+n:
    use64bitint=undef use64bitall=undef uselongdouble=undef
...
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t',
+ lseeksize=8
    alignbytes=4, prototype=define