Here shown all round-like functions which exists in perl:
#!/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);
This code produce this output:
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
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