Add Stephane and Yann. At least the 2nd problem is obviously a (minor)
compiler bug.
On 07/16, Till Bovermann wrote:
>
> Dear Oleg, James, Dario, all,
>
>
> `control` looks promising, however, it is not as straight-forward as I
> thought:
Yes. And I think it is still experimental, at least I failed to find
any documentation about control/enable.
Till, I am not sure I fully understand you questions and I can't use
faustide (my browser is too old), but let me try to answer anyway.
------------------------------------------------------------------------------
control(expr, cond) has no effect if faust has to evaluate "expr" anyway.
To me this looks strange, and I have no idea if this is by design or not.
Let me repeat my previous example:
process(inp, cond) = control(sin(inp),cond);
compiles to
virtual void compute(int count, FAUSTFLOAT** inputs, FAUSTFLOAT**
outputs) {
FAUSTFLOAT* input0 = inputs[0];
FAUSTFLOAT* input1 = inputs[1];
FAUSTFLOAT* output0 = outputs[0];
float fTemp0 = fTempPerm0;
for (int i = 0; (i < count); i = (i + 1)) {
if (float(input1[i]) != 0.0f) {
fTemp0 = std::sin(float(input0[i]));
}
output0[i] = FAUSTFLOAT(fTemp0);
}
fTempPerm0 = fTemp0;
}
again, sin(input0[i]) is only evaluated if input1[i] != 0.
However,
process(inp, cond) = control(sin(inp),cond), sin(inp);
compiles to
virtual void compute(int count, FAUSTFLOAT** inputs, FAUSTFLOAT**
outputs) {
FAUSTFLOAT* input0 = inputs[0];
FAUSTFLOAT* input1 = inputs[1];
FAUSTFLOAT* output0 = outputs[0];
FAUSTFLOAT* output1 = outputs[1];
for (int i = 0; (i < count); i = (i + 1)) {
float fTemp0 = std::sin(float(input0[i]));
output0[i] = FAUSTFLOAT(fTemp0);
output1[i] = FAUSTFLOAT(fTemp0);
}
}
See? control has no effect. That is why I think that both control(sineFloatFreq)
and control(innerSineFloatFreq) in your example should simply output
sineFloatFreq.
------------------------------------------------------------------------------
Another problem is that faust doesn't realize that oscp(1000, 0) and
oscp(1000.0, 0) is the same thing. This is compiler bug I think, but this
is why control(innerSine, _) works "as expected".
Minimal example:
sig(val) = val / fconstant(float something, "") : (+ : _) ~ _;
process = sig(1000), sig(1000.0);
Oleg.
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