lambdaworks_math/fft/
errors.rs

1use core::fmt::Display;
2
3use crate::field::errors::FieldError;
4
5#[cfg(feature = "cuda")]
6use lambdaworks_gpu::cuda::abstractions::errors::CudaError;
7
8#[derive(Debug)]
9pub enum FFTError {
10    RootOfUnityError(u64),
11    InputError(usize),
12    OrderError(u64),
13    DomainSizeError(usize),
14    #[cfg(feature = "cuda")]
15    CudaError(CudaError),
16}
17
18impl Display for FFTError {
19    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
20        match self {
21            FFTError::RootOfUnityError(_) => write!(f, "Could not calculate root of unity"),
22            FFTError::InputError(v) => {
23                write!(f, "Input length is {v}, which is not a power of two")
24            }
25            FFTError::OrderError(v) => {
26                write!(f, "Order should be less than or equal to 63, but is {v}")
27            }
28            FFTError::DomainSizeError(_) => {
29                write!(f, "Domain size exceeds two adicity of the field")
30            }
31            #[cfg(feature = "cuda")]
32            FFTError::CudaError(_) => {
33                write!(f, "A CUDA related error has ocurred")
34            }
35        }
36    }
37}
38
39#[cfg(feature = "std")]
40impl std::error::Error for FFTError {
41    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
42        match self {
43            #[cfg(feature = "cuda")]
44            FFTError::CudaError(_) => Some(e),
45            _ => None,
46        }
47    }
48}
49
50#[cfg(feature = "cuda")]
51impl From<CudaError> for FFTError {
52    fn from(error: CudaError) -> Self {
53        Self::CudaError(error)
54    }
55}
56
57impl From<FieldError> for FFTError {
58    fn from(error: FieldError) -> Self {
59        match error {
60            FieldError::DivisionByZero => {
61                panic!("Can't divide by zero during FFT");
62            }
63            FieldError::InvZeroError => {
64                panic!("Can't calculate inverse of zero during FFT");
65            }
66            FieldError::RootOfUnityError(order) => FFTError::RootOfUnityError(order),
67        }
68    }
69}
lambdaworks_math/fft/errors.rs

lambdaworks_math/fft/
errors.rs
