2020-03-03 23:52:53 +00:00
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// run-rustfix
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2021-11-20 14:04:08 +00:00
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#![feature(const_fn_floating_point_arithmetic)]
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2020-03-03 23:52:53 +00:00
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#![warn(clippy::suboptimal_flops)]
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2021-11-20 14:04:08 +00:00
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/// Allow suboptimal ops in constant context
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pub const fn in_const_context(num: f64) -> f64 {
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if num >= 0.0 { num } else { -num }
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}
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2020-03-03 23:52:53 +00:00
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struct A {
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a: f64,
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b: f64,
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}
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fn fake_abs1(num: f64) -> f64 {
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num.abs()
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}
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fn fake_abs2(num: f64) -> f64 {
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num.abs()
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}
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fn fake_abs3(a: A) -> f64 {
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a.a.abs()
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}
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fn fake_abs4(num: f64) -> f64 {
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num.abs()
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}
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fn fake_abs5(a: A) -> f64 {
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a.a.abs()
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}
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fn fake_nabs1(num: f64) -> f64 {
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-num.abs()
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}
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fn fake_nabs2(num: f64) -> f64 {
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-num.abs()
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}
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fn fake_nabs3(a: A) -> A {
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A {
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a: -a.a.abs(),
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b: a.b,
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}
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}
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fn not_fake_abs1(num: f64) -> f64 {
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2021-03-01 17:53:33 +00:00
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if num > 0.0 { num } else { -num - 1f64 }
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2020-03-03 23:52:53 +00:00
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}
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fn not_fake_abs2(num: f64) -> f64 {
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2021-03-01 17:53:33 +00:00
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if num > 0.0 { num + 1.0 } else { -(num + 1.0) }
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2020-03-03 23:52:53 +00:00
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}
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fn not_fake_abs3(num1: f64, num2: f64) -> f64 {
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2021-03-01 17:53:33 +00:00
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if num1 > 0.0 { num2 } else { -num2 }
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2020-03-03 23:52:53 +00:00
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}
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fn not_fake_abs4(a: A) -> f64 {
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2021-03-01 17:53:33 +00:00
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if a.a > 0.0 { a.b } else { -a.b }
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2020-03-03 23:52:53 +00:00
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}
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fn not_fake_abs5(a: A) -> f64 {
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2021-03-01 17:53:33 +00:00
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if a.a > 0.0 { a.a } else { -a.b }
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2020-03-03 23:52:53 +00:00
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}
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fn main() {
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fake_abs1(5.0);
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fake_abs2(5.0);
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2020-03-04 03:23:04 +00:00
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fake_abs3(A { a: 5.0, b: 5.0 });
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2020-03-03 23:52:53 +00:00
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fake_abs4(5.0);
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2020-03-04 03:23:04 +00:00
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fake_abs5(A { a: 5.0, b: 5.0 });
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2020-03-03 23:52:53 +00:00
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fake_nabs1(5.0);
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fake_nabs2(5.0);
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2020-03-04 03:23:04 +00:00
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fake_nabs3(A { a: 5.0, b: 5.0 });
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2020-03-03 23:52:53 +00:00
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not_fake_abs1(5.0);
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not_fake_abs2(5.0);
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not_fake_abs3(5.0, 5.0);
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2020-03-04 03:23:04 +00:00
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not_fake_abs4(A { a: 5.0, b: 5.0 });
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not_fake_abs5(A { a: 5.0, b: 5.0 });
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2020-03-03 23:52:53 +00:00
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}
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