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use rustfft::num_traits::FloatConst;
use rustfft::FftNum;
pub trait DctNum: FftNum + FloatConst {
fn half() -> Self;
fn two() -> Self;
}
impl<T: FftNum + FloatConst> DctNum for T {
fn half() -> Self {
Self::from_f64(0.5).unwrap()
}
fn two() -> Self {
Self::from_f64(2.0).unwrap()
}
}
#[inline(always)]
pub fn verify_length<T>(input: &[T], output: &[T], expected: usize) {
assert_eq!(
input.len(),
expected,
"Input is the wrong length. Expected {}, got {}",
expected,
input.len()
);
assert_eq!(
output.len(),
expected,
"Output is the wrong length. Expected {}, got {}",
expected,
output.len()
);
}
#[allow(unused)]
#[inline(always)]
pub fn verify_length_divisible<T>(input: &[T], output: &[T], expected: usize) {
assert_eq!(
input.len() % expected,
0,
"Input is the wrong length. Expected multiple of {}, got {}",
expected,
input.len()
);
assert_eq!(
input.len(),
output.len(),
"Input and output must have the same length. Expected {}, got {}",
input.len(),
output.len()
);
}