In the above conditionals, a and b are first compared. If the indicated relation is true (a greater than b, a less than b, a greater than or equal to b, a less than or equal to b, a equal to b, a not equal to b), then the conditional expression has the value of v1; if the relation is false, the expression has the value of v2. (For convenience, a sole "=" will function as "= =".)
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 != opcode. It uses the files notequal.orc and notequal.sco.
Example 1. Example of the != opcode.
/* notequal.orc */ ; Initialize the global variables. sr = 44100 kr = 44100 ksmps = 1 nchnls = 1 ; Instrument #1. instr 1 ; Get the 4th p-field from the score. k1 = p4 ; Is it not equal to 3? (1 = true, 0 = false) k2 = (p4 != 3 ? 1 : 0) ; Print the values of k1 and k2. printks "k1 = %f, k2 = %f\\n", 1, k1, k2 endin /* notequal.orc */
/* notequal.sco */ ; Call Instrument #1 with a p4 = 2. i 1 0 0.5 2 ; Call Instrument #1 with a p4 = 3. i 1 1 0.5 3 ; Call Instrument #1 with a p4 = 4. i 1 2 0.5 4 e /* notequal.sco */
Its output should include lines like this:
k1 = 2.000000, k2 = 1.000000 k1 = 3.000000, k2 = 0.000000 k1 = 4.000000, k2 = 1.000000