- rand EXPR
- rand
Returns a random fractional number greater than or equal to
0
and less than the value of EXPR. (EXPR should be positive.) If EXPR is omitted, the value1
is used. Currently EXPR with the value0
is also special-cased as1
- this has not been documented before perl 5.8.0 and is subject to change in future versions of perl. Automatically callssrand
unlesssrand
has already been called. See alsosrand
.Apply
int()
to the value returned byrand()
if you want random integers instead of random fractional numbers. For example,int(rand(10))
returns a random integer between
0
and9
, inclusive.(Note: If your rand function consistently returns numbers that are too large or too small, then your version of Perl was probably compiled with the wrong number of RANDBITS.)