Arithmetic Functions
atan 2(Y,X)Returns the arctangent of Y/X in the range
-PI to PI.
cos (EXPR)cos EXPR
Returns the cosine of EXPR (expressed in radians).
If EXPR is omitted takes cosine of $_ .
exp (EXPR)exp EXPR
Returns
e
to the power of EXPR.
If EXPR is omitted, gives exp($_ ).
int (EXPR)int EXPR
Returns the integer portion of EXPR.
If EXPR is omitted, uses $_ .
log (EXPR)log EXPR
Returns logarithm (base
e )
of EXPR.
If EXPR is omitted, returns log of $_ .
rand (EXPR)rand EXPR
rand Returns a random fractional number between 0 and the value of EXPR.
(EXPR should be positive.)
If EXPR is omitted, returns a value between 0 and 1.
See also srand().
sin (EXPR)sin EXPR
Returns the sine of EXPR (expressed in radians).
If EXPR is omitted, returns sine of $_ .
sqrt (EXPR)sqrt EXPR
Return the square root of EXPR.
If EXPR is omitted, returns square root of $_ .
srand (EXPR)srand EXPR
Sets the random number seed for the
rand
operator.
If EXPR is omitted, does srand(time ).