Auto merge of #5445 - logan-dev-oss:master, r=flip1995

Fixes issue #4892.

First contribution here 😊 ! Do not hesitate to correct me.

This PR is related to issue #4892 .

# Summary

```rust
-literal.method_call(args)
```
The main idea is to not trigger `clippy::precedence` when the method call is an odd function.

# Example

```rust
// should trigger lint
let _ = -1.0_f64.abs() //precedence of method call abs() and neg ('-') is ambiguous

// should not trigger lint
let _ = -1.0_f64.sin() // sin is an odd function => -sin(x) = sin(-x)
```

# Theory

Rust allows following literals:
- char
- string
- integers
- floats
- byte
- bool

Only integers/floats implements the relevant `std::ops::Neg`.
Following odd functions are implemented on i[8-128] and/or f[32-64]:
- `asin`
- `asinh`
- `atan`
- `atanh`
- `cbrt`
- `fract`
- `round`
- `signum`
- `sin`
- `sinh`
- `tan`
- `tanh `
- `to_degrees`
- `to_radians`

# Implementation

As suggested by `flip1995` in [comment](https://github.com/rust-lang/rust-clippy/issues/4892#issuecomment-568249683), this PR add a whitelist of odd functions and compare method call to the the whitelist before triggering lint.

changelog: Don't trigger [`clippy::precedence`] on odd functions.

0 files changed, 0 insertions, 0 deletions