ObjectPascal
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
 
Example code : Show the logarithm of a set of numbers
begin
  // Show the Log to base 10 values of 3 numbers
  WriteLn('Log10(1)  = '+FloatToStr(Log10(1)));
  WriteLn('Log10(5)  = '+FloatToStr(Log10(5)));
  WriteLn('Log10(10) = '+FloatToStr(Log10(10)));
end;
Show full unit code
   Log10(1)  = 0
   Log10(5)  = 0.698970004336019
   Log10(10) = 1