The Alternative Csound Reference Manual
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# tableng

tableng -- Interrogates a function table for length.

## Description

Interrogates a function table for length.

## Syntax

ir tableng ifn

kr tableng kfn

## Initialization

ifn -- Table number to be interrogated

## Performance

kfn -- Table number to be interrogated

tableng returns the length of the specified table. This will be a power of two number in most circumstances. It will not show whether a table has a guardpoint or not. It seems this information is not available in the table's data structure. If the specified table is not found, then 0 will be returned.

Likely to be useful for setting up code for table manipulation operations, such as tablemix and tablecopy.

## Examples

Here is an example of the tableng opcode. It uses the files tableng.orc and tableng.sco.

Example 1. Example of the tableng opcode.

    /* tableng.orc */
    ; Initialize the global variables.
    sr = 44100
    kr = 4410
    ksmps = 10
    nchnls = 1

    ; Instrument #1.
    instr 1
      ; Let's look at Table #1.
      ifn = 1
      ilen tableng ifn

      print ilen
    endin
    /* tableng.orc */

    /* tableng.sco */
    ; Table #1, a sine wave.
    f 1 0 16384 10 1

    ; Play Instrument #1 for one second.
    i 1 0 1
    e
    /* tableng.sco */

The table is 16,384 samples long. So its output should include a line like this:

    instr 1:  ilen = 16384.000

## Credits

Author: Robin Whittle
Australia
May 1997

Example written by Kevin Conder.

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