Real constants and functions: Difference between revisions

=={{header|Pop11}}==

<pre>

pi ;;; Number Pi

sqrt(x) ;;; Square root

log(x) ;;; Natural logarithm

exp(x) ;;; Exponential function

abs(x) ;;; Absolute value

x ** y ;;; x to the power y

</pre>

The number e is not provided directly, one has to compute 'exp(1)'

instead. Also, floor and ceiling are not provided, one can

define them using integer part:

<pre>

define floor(x);

if x < 0 then

-intof(x);

else

intof(x);

endif;

enddefine;

define ceiling(x);

-floor(-x);

enddefine;

</pre>