Log10¶

Return 10-Based logarithm.

Declaration¶

Source position: math.pp line 685

function Log10(x: Float) : Float;

Description¶

Log10 returns the 10-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.
log2	Return 2-based logarithm.
logn	Return N-based logarithm.

Example¶

Program Example21;

{ Program to demonstrate the log10 function. }

Uses math;

begin
  Writeln(Log10(10):8:4);
  Writeln(Log10(100):8:4);
  Writeln(Log10(1000):8:4);
  Writeln(Log10(1):8:4);
  Writeln(Log10(0.1):8:4);
  Writeln(Log10(0.01):8:4);
  Writeln(Log10(0.001):8:4);
end.