Logarithm Base E (Natural Logarithm) (LN)

Instruction Syntax

Built-in number for LN is 406.
LN (                                                                            
    source   : binary floating-point(8) value                                               
) :   binary floating-point(8) value which is the natural logarithm of the source           
      value                                                                     

Description:

The natural logarithm of the source operand value is computed and the result is returned.

The result is in the range:

-infinity <= LN(source) <= +infinity                                  

See floating point results from special values for additional information.

Authorization Required

• None

Lock Enforcement

• None

Exceptions

• 06 Addressing
  • 0601 Space Addressing Violation
• 0C Computation
  • 0C06 Floating-Point Overflow
  • 0C07 Floating-Point Underflow
  • 0C09 Floating-Point Invalid Operand
  • 0C0D Floating-Point Inexact Result
  • 0C0E Floating-Point Zero Divide