LogN¶

Return N-based logarithm.

Declaration¶

Source position: math.pp line 687

function LogN(n: Float; x: Float) : Float;

Description¶

Logn returns the n-base logarithm of X.

Errors¶

If x is less than or equal to 0 an 'invalid fpu operation' error will occur.

See also¶

Name	Description
ldexp	Return (2 to the power p) times x.
lnxp1	Return natural logarithm of 1+X.
log10	Return 10-Based logarithm.
log2	Return 2-based logarithm.

Example¶

Program Example23;

{ Program to demonstrate the logn function. }

Uses math;

begin
  Writeln(Logn(3,4):8:4);
  Writeln(Logn(2,4):8:4);
  Writeln(Logn(6,9):8:4);
  Writeln(Logn(exp(1),exp(1)):8:4);
  Writeln(Logn(0.5,1):8:4);
  Writeln(Logn(0.25,3):8:4);
  Writeln(Logn(0.125,5):8:4);
end.