igoto
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## igoto

igoto — Transfer control during the i-time pass.

## Description

During the i-time pass only, unconditionally transfer control to the statement labeled by label.

## Syntax

    igoto label

where label is in the same instrument block and is not an expression.

## Examples

Here is an example of the igoto opcode. It uses the file igoto.csd.

Example 460. Example of the igoto opcode.

See the sections Real-time Audio and Command Line Flags for more information on using command line flags.

    <CsoundSynthesizer>
    <CsOptions>
    ; Select audio/midi flags here according to platform
    ; Audio out   Audio in
    -odac           -iadc    ;;;RT audio I/O
    ; For Non-realtime ouput leave only the line below:
    ; -o igoto.wav -W ;;; for file output any platform
    </CsOptions>
    <CsInstruments>

    ; Initialize the global variables.
    sr = 44100
    kr = 4410
    ksmps = 10
    nchnls = 1

    ; Instrument #1.
    instr 1
      ; Get the value of the 4th p-field from the score.
      iparam = p4

      ; If iparam is 1 then play the high note.
      ; If not then play the low note.
      if (iparam == 1) igoto highnote
        igoto lownote

    highnote:
      ifreq = 880
      goto playit

    lownote:
      ifreq = 440
      goto playit

    playit:
      ; Print the values of iparam and ifreq.
      print iparam
      print ifreq

      a1 oscil 10000, ifreq, 1
      out a1
    endin

    </CsInstruments>
    <CsScore>

    ; Table #1: a simple sine wave.
    f 1 0 32768 10 1

    ; p4: 1 = high note, anything else = low note
    ; Play Instrument #1 for one second, a low note.
    i 1 0 1 0
    ; Play a Instrument #1 for one second, a high note.
    i 1 1 1 1
    e

    </CsScore>
    </CsoundSynthesizer>

Its output should include lines like this:

    instr 1:  iparam = 0.000
    instr 1:  ifreq = 440.000
    instr 1:  iparam = 1.000
    instr 1:  ifreq = 880.000

## See also

Program Flow Control

## Credits

Example written by Kevin Conder.

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