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use crate::core::math::{ArgminZero, ArgminZeroLike};
use num_complex::Complex;
macro_rules! make_zero {
($t:ty) => {
impl ArgminZero for $t {
#[allow(clippy::cast_lossless)]
#[inline]
fn zero() -> $t {
0 as $t
}
}
impl ArgminZeroLike for $t {
#[allow(clippy::cast_lossless)]
#[inline]
fn zero_like(&self) -> $t {
0 as $t
}
}
};
}
macro_rules! make_complex_zero {
($t:ty) => {
impl ArgminZero for Complex<$t> {
#[allow(clippy::cast_lossless)]
#[inline]
fn zero() -> Complex<$t> {
Complex::new(0 as $t, 0 as $t)
}
}
impl ArgminZeroLike for Complex<$t> {
#[allow(clippy::cast_lossless)]
#[inline]
fn zero_like(&self) -> Complex<$t> {
Complex::new(0 as $t, 0 as $t)
}
}
};
}
make_zero!(f32);
make_zero!(f64);
make_zero!(i8);
make_zero!(i16);
make_zero!(i32);
make_zero!(i64);
make_zero!(u8);
make_zero!(u16);
make_zero!(u32);
make_zero!(u64);
make_zero!(isize);
make_zero!(usize);
make_complex_zero!(f32);
make_complex_zero!(f64);
make_complex_zero!(i8);
make_complex_zero!(i16);
make_complex_zero!(i32);
make_complex_zero!(i64);
make_complex_zero!(u8);
make_complex_zero!(u16);
make_complex_zero!(u32);
make_complex_zero!(u64);
make_complex_zero!(isize);
make_complex_zero!(usize);
#[cfg(test)]
mod tests {
use super::*;
use paste::item;
macro_rules! make_test {
($t:ty) => {
item! {
#[test]
fn [<test_zero_ $t>]() {
let a = <$t as ArgminZero>::zero();
assert!(((0 as $t - a) as f64).abs() < std::f64::EPSILON);
}
}
item! {
#[test]
fn [<test_zero_like_ $t>]() {
let a = (42 as $t).zero_like();
assert!(((0 as $t - a) as f64).abs() < std::f64::EPSILON);
}
}
};
}
make_test!(isize);
make_test!(usize);
make_test!(i8);
make_test!(u8);
make_test!(i16);
make_test!(u16);
make_test!(i32);
make_test!(u32);
make_test!(i64);
make_test!(u64);
make_test!(f32);
make_test!(f64);
}