rust/tests/ui/floating_point_abs.rs
2021-11-20 15:39:29 +01:00

85 lines
1.7 KiB
Rust

// run-rustfix
#![feature(const_fn_floating_point_arithmetic)]
#![warn(clippy::suboptimal_flops)]
/// Allow suboptimal ops in constant context
pub const fn in_const_context(num: f64) -> f64 {
if num >= 0.0 { num } else { -num }
}
struct A {
a: f64,
b: f64,
}
fn fake_abs1(num: f64) -> f64 {
if num >= 0.0 { num } else { -num }
}
fn fake_abs2(num: f64) -> f64 {
if 0.0 < num { num } else { -num }
}
fn fake_abs3(a: A) -> f64 {
if a.a > 0.0 { a.a } else { -a.a }
}
fn fake_abs4(num: f64) -> f64 {
if 0.0 >= num { -num } else { num }
}
fn fake_abs5(a: A) -> f64 {
if a.a < 0.0 { -a.a } else { a.a }
}
fn fake_nabs1(num: f64) -> f64 {
if num < 0.0 { num } else { -num }
}
fn fake_nabs2(num: f64) -> f64 {
if 0.0 >= num { num } else { -num }
}
fn fake_nabs3(a: A) -> A {
A {
a: if a.a >= 0.0 { -a.a } else { a.a },
b: a.b,
}
}
fn not_fake_abs1(num: f64) -> f64 {
if num > 0.0 { num } else { -num - 1f64 }
}
fn not_fake_abs2(num: f64) -> f64 {
if num > 0.0 { num + 1.0 } else { -(num + 1.0) }
}
fn not_fake_abs3(num1: f64, num2: f64) -> f64 {
if num1 > 0.0 { num2 } else { -num2 }
}
fn not_fake_abs4(a: A) -> f64 {
if a.a > 0.0 { a.b } else { -a.b }
}
fn not_fake_abs5(a: A) -> f64 {
if a.a > 0.0 { a.a } else { -a.b }
}
fn main() {
fake_abs1(5.0);
fake_abs2(5.0);
fake_abs3(A { a: 5.0, b: 5.0 });
fake_abs4(5.0);
fake_abs5(A { a: 5.0, b: 5.0 });
fake_nabs1(5.0);
fake_nabs2(5.0);
fake_nabs3(A { a: 5.0, b: 5.0 });
not_fake_abs1(5.0);
not_fake_abs2(5.0);
not_fake_abs3(5.0, 5.0);
not_fake_abs4(A { a: 5.0, b: 5.0 });
not_fake_abs5(A { a: 5.0, b: 5.0 });
}