<= — Determines if one value is less than or equal to another.
In the above conditional, a and b are first compared. If the indicated relation is true (a less than or equal to b), then the conditional expression has the value of v1; if the relation is false, the expression has the value of v2.
NB.: If v1 or v2 are expressions, these will be evaluated before the conditional is determined.
In terms of binding strength, all conditional operators (i.e. the relational operators (<, etc.), and ?, and : ) are weaker than the arithmetic and logical operators (+, -, *, /, && and ||).
These are operators not opcodes. Therefore, they can be used within orchestra statements, but do not form complete statements themselves.
Here is an example of the <= operator. It uses the file lessequal.csd.
Example 25. Example of the <= operator.
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 -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 kval randomh 0, 1.2, 20 ;choose between 0 and 1.2 if kval >0 && kval<=.5 then ;3 possible outcomes kvl = 1 elseif kval >.5 && kval<=1 then kvl =2 elseif kval >1 then kvl =3 endif printks "random number = %f, result = %f\n", .1, kval, kvl asig poscil .7, 440*kvl, 1 outs asig, asig endin </CsInstruments> <CsScore> f1 0 16384 10 1 i 1 0 5 e </CsScore> </CsoundSynthesizer>
Its output should include lines like this:
random number = 1.035781, result = 3.000000 random number = 0.134037, result = 1.000000 random number = 0.130742, result = 1.000000 random number = 1.002550, result = 3.000000 random number = 0.370565, result = 1.000000 random number = 0.655759, result = 2.000000 random number = 0.676154, result = 2.000000 ......