floatlog()

Description

Return the logarithm of a value

Syntax

floatlog(value, num);

Parameters

Variable	Input

Variable	Input
`value`	The value to calculate the logarithm of.
`num`	The logarithmic base to use; the default base is 10.

Returns

The result: the logarithm of the input number.

Function call example

Float type numbers logarithm example

new data1=8;
new data2=15;
new Float: data3;
new Float: data4;
new Float: log;
   
main(){
 data3 = float(data1); //first convert previous data into floating point if it wasn't before
 data4 = float(data2); //first convert previous data into floating point if it wasn't before
 log = floatlog(data4, data3);  //result of log will be log = 1.30230
  while(1){
    Delay(100);                                     
  }
}

Notes and Warnings

This function raises a “domain” error is the input value is zero or negative.