Fix lint registration

[rust.git] / clippy_lints / src / float_equality_without_abs.rs

diff --git a/clippy_lints/src/float_equality_without_abs.rs b/clippy_lints/src/float_equality_without_abs.rs
index 1e503cc795ccbb70d9ec7c2fb002b703d5ef5c24..98aee7592ae80a496bde4da3e3f47327a7a547b3 100644 (file)
--- a/clippy_lints/src/float_equality_without_abs.rs
+++ b/clippy_lints/src/float_equality_without_abs.rs
@@ -11,30 +11,33 @@
 use rustc_span::source_map::Spanned;
 
 declare_clippy_lint! {
-    /// **What it does:** Checks for statements of the form `(a - b) < f32::EPSILON` or
-     /// `(a - b) < f64::EPSILON`. Notes the missing `.abs()`.
-     ///
-     /// **Why is this bad?** The code without `.abs()` is more likely to have a bug.
-     ///
-     /// **Known problems:** If the user can ensure that b is larger than a, the `.abs()` is
-     /// technically unneccessary. However, it will make the code more robust and doesn't have any
-     /// large performance implications. If the abs call was deliberately left out for performance
-     /// reasons, it is probably better to state this explicitly in the code, which then can be done
-     /// with an allow.
-     ///
-     /// **Example:**
-     ///
-     /// ```rust
-     /// pub fn is_roughly_equal(a: f32, b: f32) -> bool {
-     ///     (a - b) < f32::EPSILON
-     /// }
-     /// ```
-     /// Use instead:
-     /// ```rust
-     /// pub fn is_roughly_equal(a: f32, b: f32) -> bool {
-     ///     (a - b).abs() < f32::EPSILON
-     /// }
-     /// ```
+    /// ### What it does
+    /// Checks for statements of the form `(a - b) < f32::EPSILON` or
+    /// `(a - b) < f64::EPSILON`. Notes the missing `.abs()`.
+    ///
+    /// ### Why is this bad?
+    /// The code without `.abs()` is more likely to have a bug.
+    ///
+    /// ### Known problems
+    /// If the user can ensure that b is larger than a, the `.abs()` is
+    /// technically unnecessary. However, it will make the code more robust and doesn't have any
+    /// large performance implications. If the abs call was deliberately left out for performance
+    /// reasons, it is probably better to state this explicitly in the code, which then can be done
+    /// with an allow.
+    ///
+    /// ### Example
+    /// ```rust
+    /// pub fn is_roughly_equal(a: f32, b: f32) -> bool {
+    ///     (a - b) < f32::EPSILON
+    /// }
+    /// ```
+    /// Use instead:
+    /// ```rust
+    /// pub fn is_roughly_equal(a: f32, b: f32) -> bool {
+    ///     (a - b).abs() < f32::EPSILON
+    /// }
+    /// ```
+    #[clippy::version = "1.48.0"]
     pub FLOAT_EQUALITY_WITHOUT_ABS,
     suspicious,
     "float equality check without `.abs()`"
@@ -66,7 +69,7 @@ fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
 
         if_chain! {
 
-            // left hand side is a substraction
+            // left hand side is a subtraction
             if let ExprKind::Binary(
                 Spanned {
                     node: BinOpKind::Sub,
@@ -81,7 +84,7 @@ fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
             if let Res::Def(DefKind::AssocConst, def_id) = cx.qpath_res(epsilon_path, rhs.hir_id);
             if match_def_path(cx, def_id, &paths::F32_EPSILON) || match_def_path(cx, def_id, &paths::F64_EPSILON);
 
-            // values of the substractions on the left hand side are of the type float
+            // values of the subtractions on the left hand side are of the type float
             let t_val_l = cx.typeck_results().expr_ty(val_l);
             let t_val_r = cx.typeck_results().expr_ty(val_r);
             if let ty::Float(_) = t_val_l.kind();