30 lines
1.3 KiB
Rust
30 lines
1.3 KiB
Rust
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//! This example is mean to be used for inspecting the generated assembly.
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//! This can be interesting when working with simd intrinsics.
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//!
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//! To use:
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//! - Mark the function that should be investigated with `#[inline(never)]`.
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//! - If needed, add any required feature to the function, for example `#[target_feature(enable = "sse4.1")]`
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//! - Change the code below to use the changed function.
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//! Currently it is set up to look at the f32 version of the SSE 4-point butterfly.
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//! It uses the FftPlannerSse to plan a length 4 FFT, that will use the modified butterfly.
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//! - Ask rustc to output assembly code:
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//! `cargo rustc --release --features sse --example asmtest -- --emit=asm`
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//! - This will create a file at `target/release/examples/asmtest-0123456789abcdef.s` (with a random number in the filename).
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//! - Open this file and search for the function.
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use rustfft::num_complex::Complex32;
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//use rustfft::num_complex::Complex64;
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//use rustfft::FftPlannerScalar;
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use rustfft::FftPlannerSse;
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//use rustfft::FftPlannerNeon;
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fn main() {
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//let mut planner = FftPlannerScalar::new();
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let mut planner = FftPlannerSse::new().unwrap();
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//let mut planner = FftPlannerNeon::new().unwrap();
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let fft = planner.plan_fft_forward(4);
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let mut buffer = vec![Complex32::new(0.0, 0.0); 100];
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fft.process(&mut buffer);
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}
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