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#![allow(dead_code, clippy::double_parens, clippy::unnecessary_cast)]
#![warn(clippy::suboptimal_flops, clippy::imprecise_flops)]
// FIXME(f16_f128): add tests for these types once math functions are available
const TWO: f32 = 2.0;
const E: f32 = std::f32::consts::E;
fn check_log_base() {
let x = 1f32;
let _ = x.log2();
//~^ suboptimal_flops
let _ = x.log10();
//~^ suboptimal_flops
let _ = x.ln();
//~^ suboptimal_flops
let _ = x.log2();
//~^ suboptimal_flops
let _ = x.ln();
//~^ suboptimal_flops
let _ = (x as f32).log2();
//~^ suboptimal_flops
let x = 1f64;
let _ = x.log2();
//~^ suboptimal_flops
let _ = x.log10();
//~^ suboptimal_flops
let _ = x.ln();
//~^ suboptimal_flops
}
fn check_ln1p() {
let x = 1f32;
let _ = 2.0f32.ln_1p();
//~^ imprecise_flops
let _ = 2.0f32.ln_1p();
//~^ imprecise_flops
let _ = x.ln_1p();
//~^ imprecise_flops
let _ = (x / 2.0).ln_1p();
//~^ imprecise_flops
let _ = x.powi(3).ln_1p();
//~^ imprecise_flops
let _ = (x.powi(3) / 2.0).ln_1p();
//~^ imprecise_flops
let _ = (std::f32::consts::E - 1.0).ln_1p();
//~^ imprecise_flops
let _ = x.ln_1p();
//~^ imprecise_flops
let _ = x.powi(3).ln_1p();
//~^ imprecise_flops
let _ = (x + 2.0).ln_1p();
//~^ imprecise_flops
let _ = (x / 2.0).ln_1p();
//~^ imprecise_flops
// Cases where the lint shouldn't be applied
let _ = (1.0 + x + 2.0).ln();
let _ = (x + 1.0 + 2.0).ln();
let _ = (x + 1.0 / 2.0).ln();
let _ = (1.0 + x - 2.0).ln();
let x = 1f64;
let _ = 2.0f64.ln_1p();
//~^ imprecise_flops
let _ = 2.0f64.ln_1p();
//~^ imprecise_flops
let _ = x.ln_1p();
//~^ imprecise_flops
let _ = (x / 2.0).ln_1p();
//~^ imprecise_flops
let _ = x.powi(3).ln_1p();
//~^ imprecise_flops
let _ = x.ln_1p();
//~^ imprecise_flops
let _ = x.powi(3).ln_1p();
//~^ imprecise_flops
let _ = (x + 2.0).ln_1p();
//~^ imprecise_flops
let _ = (x / 2.0).ln_1p();
//~^ imprecise_flops
// Cases where the lint shouldn't be applied
let _ = (1.0 + x + 2.0).ln();
let _ = (x + 1.0 + 2.0).ln();
let _ = (x + 1.0 / 2.0).ln();
let _ = (1.0 + x - 2.0).ln();
}
fn issue12881() {
pub trait MyLog {
fn log(&self) -> Self;
}
impl MyLog for f32 {
fn log(&self) -> Self {
4.
}
}
let x = 2.0;
x.log();
}
fn main() {}
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