forked from StrafesNET/strafe-project
44 lines
1.3 KiB
Rust
44 lines
1.3 KiB
Rust
#[doc(hidden)]
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#[macro_export(local_inner_macros)]
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macro_rules! impl_wide_operations {
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( $struct: ident { $($field: ident), + }, $size: expr ) => {
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impl<U,T:Copy+fixed_wide::wide::WideMul<Output=U>> fixed_wide::wide::WideMul for $struct<T> {
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type Output=$struct<U>;
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#[inline]
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fn wide_mul(self, rhs: Self) -> Self::Output {
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$struct{
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$( $field: self.$field.wide_mul(rhs.$field) ), +
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}
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}
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}
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impl<U:std::ops::Add<Output=U>,T:Copy+fixed_wide::wide::WideMul<Output=U>> $struct<T> {
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#[inline]
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pub fn wide_dot(self, other: Self) -> U {
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$crate::sum_repeating!(
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$( + (self.$field.wide_mul(other.$field)) ) +
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)
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}
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pub fn wide_length_squared(&self) -> U {
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let squared = $struct {
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$( $field: self.$field.wide_mul(self.$field) ), +
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};
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$crate::sum_repeating!(
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$( + squared.$field ) +
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)
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}
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}
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};
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}
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// HACK: Allows us to sum repeating tokens in macros.
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// See: https://stackoverflow.com/a/60187870/17452730
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#[doc(hidden)]
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#[macro_export(local_inner_macros)]
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macro_rules! sum_repeating {
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( + $($item: tt) * ) => {
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$($item) *
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};
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}
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