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 |