On 10/13, Stéphane Letz wrote:
>
> Yes, Yann is looking at some misoptimisations that should fixed.
Thanks, I see the new commits... the unnecessary *(-1) has gone.
But just FYI, this trivial example
import("stdfaust.lib");
k = ma.SR;
process(x) = -k, -k*x;
still compiles to
void instanceConstants(int sample_rate)
{
fSampleRate = sample_rate;
fConst0 = std::min<float>(1.92e+05f, std::max<float>(1.0f,
float(fSampleRate)));
fConst1 = -fConst0;
}
void compute(int count, FAUSTFLOAT** inputs, FAUSTFLOAT** outputs)
{
FAUSTFLOAT* input0 = inputs[0];
FAUSTFLOAT* output0 = outputs[0];
FAUSTFLOAT* output1 = outputs[1];
for (int i0 = 0; i0 < count; i0 = i0 + 1) {
output0[i0] = FAUSTFLOAT(fConst1);
output1[i0] = FAUSTFLOAT(-(fConst0 *
float(input0[i0])));
}
}
and this looks sub-optimal, 2 fConst's in struct dsp make no sense.
I am not saying this really needs to be fixed, just FYI.
Oleg.
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