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Power function

In unit Math

Return real power.

Declaration

pascal
function Power(base: Float; exponent: Float): Float

Description

power raises base to the power of exponent. This is equivalent to exp(ln(base)*exponent). However, for integer exponent values intpower is called. Otherwise base must be non-negative.

Errors

Any number of floating point math exceptions may be raised, if they are not masked by SetExceptionMask.

See also

Example: ex34

pascal
Program Example34;

{ Program to demonstrate the power function. }

Uses Math;

procedure dopower(x,y : float);

begin
  writeln(x:8:6,'^',y:8:6,' = ',power(x,y):8:6)
end;

begin
  dopower(2,2);
  dopower(2,-2);
  dopower(2,0.0);
end.

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.