Hi, list.
There's a problem when using ints in double-precision; particularly, the
internal int representation is always 32-bit, and Stéphane explained that
it can't be changed easily.
So when compiling with -double,
process = _ * 2^32;
resolves to
virtual void compute(int count, FAUSTFLOAT** RESTRICT inputs, FAUSTFLOAT**
RESTRICT outputs) {
FAUSTFLOAT* input0 = inputs[0];
FAUSTFLOAT* output0 = outputs[0];
for (int i0 = 0; i0 < count; i0 = i0 + 1) {
output0[i0] = FAUSTFLOAT(0.0);
}
}
because the right operand overflows to 0, whereas
process = _ * 2.0^32;
gives the expected result
virtual void compute(int count, FAUSTFLOAT** RESTRICT inputs, FAUSTFLOAT**
RESTRICT outputs) {
FAUSTFLOAT* input0 = inputs[0];
FAUSTFLOAT* output0 = outputs[0];
for (int i0 = 0; i0 < count; i0 = i0 + 1) {
output0[i0] = FAUSTFLOAT(4294967296.0 * double(input0[i0]));
}
}
Since Faust is a high-level language for DSP, wouldn't it make sense to
treat all signals as float unless there's an explicit cast to int?
Ciao,
Dr Dario Sanfilippo
http://dariosanfilippo.com
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