APPX Software Library

Chapter 4-6: ILF Keyword Reference

CALC - Exponential Functions

Function

Description

Example

@LOG(X)Returns the natural log (base e) of X. An error occurs if X is zero or negative.@LOG(100) = 4.60517...
@LOG(0 = ERROR
@LOG(-2) = ERROR
@EXP(X)Returns the value of e raised to the power of X.@EXP(2) = 7.38905...
@EXP(1) = 2.71828...
@EXP(0) = 1
@EXP(-2.5) = .08208...
@LOG10(X)Returns the base 10 log of X. An error occurs if X is 0 or negative. To compute the antilog, you can use @POW, such as @POW(10,X).@LOG10(100) = 2
@LOG10(50) = 1.69897...
@LOG10(.5) =-.30102...
@LOG10(0) = ERROR
@LOG10(-5) = ERROR