//@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 }); }