cggoto — Conditionally transfer control on every pass.
cggoto condition, label
where label is in the same instrument block and is not an expression, and where condition uses one of the Relational operators (<, =, <=, ==, !=) (and = for convenience, see also under Conditional Values).
Here is an example of the cggoto opcode. It uses the file cggoto.csd.
Example 107. Example of the cggoto opcode.
See the sections Real-time Audio and Command Line Flags for more information on using command line flags.
<CsoundSynthesizer> <CsOptions> ; Audio out Audio in No messages -odac -iadc -d ;;;RT audio I/O ; -o cggoto.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> ; Initialize the global variables. sr = 44100 ksmps = 10 nchnls = 1 ; Instrument #1. instr 1 i1 = p4 ; If i1 is equal to one, play a high note. ; Otherwise play a low note. cggoto (i1 == 1), highnote lownote: a1 oscil 10000, 220, 1 goto playit highnote: a1 oscil 10000, 440, 1 goto playit playit: out a1 endin </CsInstruments> <CsScore> ; Table #1: a simple sine wave. f 1 0 32768 10 1 ; Play lownote for one second. i 1 0 1 1 ; Play highnote for one second. i 1 1 1 2 e </CsScore> </CsoundSynthesizer>