Delphi Basics : Log10 command

DelphiBasics

Log10
Function

Gives the log to base 10 of a number

Math unit

function Log10(const Number Extended):Extended;

Description

The Log10 function returns the logarithm to base 10 of Number.

Related commands

Exp		Gives the exponent of a number
Ln		Gives the natural logarithm of a number

Download this web site as a Windows program.

Example code : Show the logarithm of a set of numbers

begin
  // Show the Log to base 10 values of 3 numbers
  ShowMessage('Log10(1)  = '+FloatToStr(Log10(1)));
  ShowMessage('Log10(5)  = '+FloatToStr(Log10(5)));
  ShowMessage('Log10(10) = '+FloatToStr(Log10(10)));
end;

Show full unit code

  Log10(1) = 0
  Log10(5) = 0.698970004336019
  Log10(10) = 1