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/

Division operator.

Arithmetic operators perform operations of change-sign (negate), don't-change-sign, logical AND logical OR, add, subtract, multiply and divide. Note that a value or an expression may fall between two of these operators, either of which could take it as its left or right argument, as in

\[ a + b * c. \]

In such cases three rules apply:

  1. \(*\) and \(/\) bind to their neighbors more strongly than \(+\) and \(-\). Thus the above expression is taken as:
    \(a + (b * c)\) with \(*\) taking \(b\) and \(c\) and then \(+\) taking \(a\) and \(b * c\).

  2. \(+\) and \(-\) bind more strongly than &&, which in turn is stronger than ||:
    \(a \;\&\&\; b - c \;||\; d\) is taken as \((a \;\&\&\; (b - c))\;||\; d\)

  3. When both operators bind equally strongly, the operations are done left to right:
    \(a - b - c\) is taken as \((a - b) - c\)

Parentheses may be used as above to force particular groupings.

Syntax

a / b  (no rate restriction)

where the arguments \(a\) and \(b\) may be further expressions.

Arguments

The arguments of / can be scalar values or k-rate one dimensional arrays (vectors), or any combination. If one of the arguments is an array, so is the value.

Examples

Here is an example of the / operator. It uses the file divides.csd.

Example of the / operator.
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<CsoundSynthesizer>
<CsOptions>
; Select audio/midi flags here according to platform
-odac    ;;;realtime audio out
;-iadc    ;;;uncomment -iadc if realtime audio input is needed too
; For Non-realtime ouput leave only the line below:
; -o /.wav -W ;;; for file output any platform
</CsOptions>
<CsInstruments>

sr = 44100
ksmps = 32
nchnls = 2
0dbfs  = 1

instr 1

idiv  = 1/p3 * p4
ktrm  oscil 1, idiv, 1                                          ;use oscil as an envelope
printf "retrigger rate per note duration = %f\n",1, idiv
kndx  line 5, p3, 1                                             ;vary index of FM
asig  foscil ktrm, 200, 1, 1.4, kndx, 1
      outs asig, asig

endin
</CsInstruments>
<CsScore>
f 1  0 4096 10   1    ;sine wave

i 1 0 3 10   
i 1 4 3 15      
i 1 8 3 2 

e
</CsScore>
</CsoundSynthesizer>

Its output should include lines like these:

retrigger rate per note duration = 3.333333
retrigger rate per note duration = 5.000000
retrigger rate per note duration = 0.666667

See also

Arithmetic and Logic Operations

Credits

Arithmetic on vectors is new in version 6.00