CEESxLOG—Logarithm base e
CEESxLOG performs the mathematical function logarithm base e by
using the equation:
The following routines are provided for the various data types
supported:
- CEESSLOG
- 32-bit single floating-point number
- CEESDLOG
- 64-bit double floating-point number
- CEESQLOG
- 128-bit extended floating-point number
- CEESTLOG
- 32-bit single floating-point complex number
- CEESELOG
- 64-bit double floating-point complex number
- CEESRLOG
- 128-bit extended floating-point complex number
Syntax >>-CEESxLOG--(--parm1--,--fc--,--result--)---------------------><
- parm1 (input)
- The input to the log base e routine. The input range varies:
G
For Input range Real numbers: parm1 > 0 Complex numbers: parm1 is not equal to 0 - fc (output)
- A 12-byte feedback code, optional in some languages,
that indicates the result of this service. If you choose to omit this
parameter, refer to Invoking callable services for the appropriate syntax
to indicate that the feedback code was omitted.
The following symbolic conditions can result from this service:
Code Severity Message number Message text CEE000 0 — The service completed successfully. CEE1US 2 2012 The parameter was less than or equal to limit in math routine routine-name. CEE1V2 2 2018 The real and imaginary parts of the parameter were equal to limit in math routine routine-name. - result (output)
- The result of the log base e routine. The output range for functions of real variables is: result is greater than or equal to -180.218 and is less than or equal to ≤ 174.673.