Place radian lints under suboptimal_flops

Author: thiagoarrais

clippy_lints/src/floating_point_arithmetic.rs

@@ -651,7 +651,7 @@ fn check_radians(cx: &LateContext<'_>, expr: &Expr<'_>) {
             {
                 span_lint_and_sugg(
                     cx,
-                    IMPRECISE_FLOPS,
+                    SUBOPTIMAL_FLOPS,
                     expr.span,
                     "conversion to degrees can be done more accurately",
                     "consider using",
@@ -664,7 +664,7 @@ fn check_radians(cx: &LateContext<'_>, expr: &Expr<'_>) {
             {
                 span_lint_and_sugg(
                     cx,
-                    IMPRECISE_FLOPS,
+                    SUBOPTIMAL_FLOPS,
                     expr.span,
                     "conversion to radians can be done more accurately",
                     "consider using",

tests/ui/floating_point_rad.fixed

@@ -1,5 +1,5 @@
 // run-rustfix
-#![warn(clippy::imprecise_flops)]
+#![warn(clippy::suboptimal_flops)]
 
 fn main() {
     let x = 3f32;

tests/ui/floating_point_rad.rs

@@ -1,5 +1,5 @@
 // run-rustfix
-#![warn(clippy::imprecise_flops)]
+#![warn(clippy::suboptimal_flops)]
 
 fn main() {
     let x = 3f32;

tests/ui/floating_point_rad.stderr

@@ -4,7 +4,7 @@ error: conversion to degrees can be done more accurately
 LL |     let _ = x * 180f32 / std::f32::consts::PI;
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `x.to_degrees()`
    |
-   = note: `-D clippy::imprecise-flops` implied by `-D warnings`
+   = note: `-D clippy::suboptimal-flops` implied by `-D warnings`
 
 error: conversion to radians can be done more accurately
   --> $DIR/floating_point_rad.rs:7:13