F322_LOG

Redundant instruction

NOTE

This is a redundant instruction. It is replaced by: LOG

The logarithm (LOG) is calculated of the data specified in s, and the result is stored in d.

Parameters

Input

s (REAL)

Real number input data.

Output

d (REAL)

32-bit area for result (destination).

Remarks

NOTE

  • F322_LOG cannot be programmed in the interrupt program.

  • Instead of using F322_LOG, you can use variables of the type REAL with the more flexible instruction LOG.

Error flags

sys_bIsOperationErrorHold (turns to TRUE and remains TRUE)

  • if data other than real number data is specified in s.

  • if sif is not greater than zero.

sys_bIsOperationErrorNonHold (turns to TRUE for one scan)

  • if data other than real number data is specified in s.

  • if sif is not greater than zero.

sys_bIsEqual (turns to TRUE and remains TRUE)

if the result of processing is recognized as "0".

sys_bIsCarry (turns to TRUE for one scan)

if the result is overflowed.

Related topics:

System instructions

Instructions pane

Memory areas

Data types

Parent topic: Redundant instructions

Modified on: 2019-01-24Feedback on this pagePanasonic hotline