categorized answer QandAEditors Here shown all round-like functions which exists in perl:<BR> <CODE> #!/usr/bin/perl use POSIX; @a=(3.3, 3.5, 3.7, -3.3, -3.5, -3.7, 3.45); print "number\tint\tprintf\tfloor\tceil\n"; printf "%.2f\t%.1f\t%.1f\t%.2f\t%.2f\n", $_, int, $_, floor($_), ceil($_) foreach (@a); </CODE> This code produce this output:<BR> <PRE> number int printf floor ceil 3.30 3.0 3.3 3.00 4.00 3.50 3.0 3.5 3.00 4.00 3.70 3.0 3.7 3.00 4.00 -3.30 -3.0 -3.3 -4.00 -3.00 -3.50 -3.0 -3.5 -4.00 -3.00 -3.70 -3.0 -3.7 -4.00 -3.00 3.45 3.0 3.5 3.00 4.00 </PRE> 24335