nalgebra/src/base/scalar.rs

use std::any::Any;
use std::any::TypeId;
use std::fmt::Debug;

/// The basic scalar type for all structures of `nalgebra`.
///
/// This does not make any assumption on the algebraic properties of `Self`.
pub trait Scalar: PartialEq + Debug + Any {
    #[inline]
    /// Tests if `Self` the same as the type `T`
    ///
    /// Typically used to test of `Self` is a f32 or a f64 with `N::is::<f32>()`.
    fn is<T: Scalar>() -> bool {
        TypeId::of::<Self>() == TypeId::of::<T>()
    }
}
impl<T: Copy + PartialEq + Debug + Any> Scalar for T {}
Add rustfmt.toml and run it. 2018-10-22 13:00:10 +08:00			`use std::any::Any;`
Add the most common matrix decompositions. 2017-08-03 01:37:44 +08:00			`use std::any::TypeId;`
Complete library rewrite. See comments on #207 for details. 2016-12-05 05:44:42 +08:00			`use std::fmt::Debug;`

Fix typo in scalar.rs. 2017-04-06 22:46:54 +08:00			/// The basic scalar type for all structures of `nalgebra`.
Complete library rewrite. See comments on #207 for details. 2016-12-05 05:44:42 +08:00			`///`
			/// This does not make any assumption on the algebraic properties of `Self`.
Move `Copy` constraint from the definition of `Scalar` to all its use-sites. This should semantically be a no-op, but enables refactorings to use non-Copy scalars on a case-by-case basis. Also, the only instance of a `One + Zero` trait bound was changed into a `Zero + One` bound to match the others. The following sed scripts were used in the refactoring (with each clause added to reduce the error count of `cargo check`): ```bash export RELEVANT_SOURCEFILES="$(find src -name '.rs') $(find examples -name '.rs')" for f in $RELEVANT_SOURCEFILES; do sed -i 's/N: Scalar,/N: Scalar+Copy,/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N: Scalar + Field/N: Scalar + Copy + Field/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N: Scalar + Zero/N: Scalar + Copy + Zero/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N: Scalar + Closed/N: Scalar + Copy + Closed/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N: Scalar + Eq/N: Scalar + Copy + Eq/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N: Scalar + PartialOrd/N: Scalar + Copy + PartialOrd/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N: Scalar + Zero/N: Scalar + Copy + Zero/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N: Scalar + PartialEq/N: Scalar + Copy + PartialEq/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N: Scalar>/N: Scalar+Copy>/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N: Scalar + $bound/N: Scalar + Copy + $bound/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N: Scalar + $bound/N: Scalar + Copy + $bound/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N\([0-9]\): Scalar,/N\1: Scalar+Copy,/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N: Scalar + $trait/N: Scalar + Copy + $trait/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N\([0-9]\): Scalar + Superset/N\1: Scalar + Copy + Superset/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N\([0-9]\): Scalar + \([a-zA-Z]Eq\)/N\1: Scalar + Copy + \2/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N\([0-9]\?\): Scalar + \([a-zA-Z]Eq\)/N\1: Scalar + Copy + \2/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N\([0-9]\?\): Scalar + \(hash::\)/N\1: Scalar + Copy + \2/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N\([0-9]\?\): Scalar {/N\1: Scalar + Copy {/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N\([0-9]\?\): Scalar + \(Zero\)/N\1: Scalar + Copy + \2/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N\([0-9]\?\): Scalar + \(Bounded\)/N\1: Scalar + Copy + \2/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N\([0-9]\?\): Scalar + \(Lattice\)/N\1: Scalar + Copy + \2/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N\([0-9]\?\): Scalar + \(Meet\\|Join\)/N\1: Scalar + Copy + \2/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N\([0-9]\?\): Scalar + \(fmt::\)/N\1: Scalar + Copy + \2/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N\([0-9]\?\): Scalar + \(Ring\)/N\1: Scalar + Copy + \2/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N\([0-9]\?\): Scalar + \(Hash\)/N\1: Scalar + Copy + \2/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N\([0-9]\?\): Scalar + \(Send\\|Sync\)/N\1: Scalar + Copy + \2/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/One + Zero/Zero + One/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N\([0-9]\?\): Scalar + \(Zero\)/N\1: Scalar + Copy + \2/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N\([0-9]\?\): Scalar + \($marker\)/N\1: Scalar + Copy + \2/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/N\([0-9]\?\): Scalar>/N\1: Scalar + Copy>/' $f; done for f in $RELEVANT_SOURCEFILES; do sed -i 's/Scalar+Copy/Scalar + Copy/' $f; done ``` 2019-11-20 04:57:37 +08:00			`pub trait Scalar: PartialEq + Debug + Any {`
Add the most common matrix decompositions. 2017-08-03 01:37:44 +08:00			`#[inline]`
Typo fixes. 2018-09-24 12:48:42 +08:00			/// Tests if `Self` the same as the type `T`
Add documentation. 2017-08-14 01:52:57 +08:00			`///`
			/// Typically used to test of `Self` is a f32 or a f64 with `N::is::<f32>()`.
Add the most common matrix decompositions. 2017-08-03 01:37:44 +08:00			`fn is<T: Scalar>() -> bool {`
			`TypeId::of::<Self>() == TypeId::of::<T>()`
			`}`
Complete library rewrite. See comments on #207 for details. 2016-12-05 05:44:42 +08:00			`}`
Run rust fmt. 2018-02-02 19:26:35 +08:00			`impl<T: Copy + PartialEq + Debug + Any> Scalar for T {}`