58 lines
1.2 KiB
Rust
58 lines
1.2 KiB
Rust
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// issue: rust-lang/rust#106423
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// ICE collection encountered polymorphic constant: UnevaluatedConst {..}
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//@ edition:2021
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//@ check-pass
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#![feature(generic_const_exprs, generic_arg_infer)]
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#![allow(incomplete_features)]
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#![allow(unused)]
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use core::mem::MaybeUninit;
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pub struct Arr<T, const N: usize> {
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v: [MaybeUninit<T>; N],
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}
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impl<T, const N: usize> Arr<T, N> {
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const ELEM: MaybeUninit<T> = MaybeUninit::uninit();
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const INIT: [MaybeUninit<T>; N] = [Self::ELEM; N]; // important for optimization of `new`
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fn new() -> Self {
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Arr { v: Self::INIT }
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}
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}
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pub struct BaFormatFilter<const N: usize> {}
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pub enum DigitalFilter<const N: usize>
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where
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[(); N * 2 + 1]: Sized,
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[(); N * 2]: Sized,
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{
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Ba(BaFormatFilter<{ N * 2 + 1 }>),
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}
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pub fn iirfilter_st_copy<const N: usize, const M: usize>(_: [f32; M]) -> DigitalFilter<N>
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where
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[(); N * 2 + 1]: Sized,
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[(); N * 2]: Sized,
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{
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let zpk = zpk2tf_st(&Arr::<f32, { N * 2 }>::new(), &Arr::<f32, { N * 2 }>::new());
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DigitalFilter::Ba(zpk)
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}
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pub fn zpk2tf_st<const N: usize>(
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_z: &Arr<f32, N>,
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_p: &Arr<f32, N>,
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) -> BaFormatFilter<{ N + 1 }>
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where
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[(); N + 1]: Sized,
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{
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BaFormatFilter {}
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}
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fn main() {
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iirfilter_st_copy::<4, 2>([10., 50.,]);
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}
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