exp (Function)

This function will calculate the base-e exponential function of the argument, eV.

Note: This function works with DOUBLE, but can also work with FLOAT as described in the Floating-point math introductory section.

Input:

V : DOUBLE

Value of exponent.

Returns: DOUBLE

The exponential value of V. If the value is larger than can be represented, Infinity is returned.

Declaration:

FUNCTION exp : DOUBLE;
VAR_INPUT
v : DOUBLE;
END_VAR;

Example:

INCLUDE rtcu.inc
INCLUDE math.inc
 
PROGRAM test;
 
DebugMsg( message := "e^5 = " + doubleToStr(v := exp(v:=5.0)));
DebugMsg( message := "2^5 = " + doubleToStr(v := exp2(v:=5.0)));
 
 
END_PROGRAM;