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https://github.com/rust-lang/rust-clippy
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ff0d44e45a
Add lint to detect floating point operations that can be computed more accurately at the cost of performance. `cbrt`, `ln_1p` and `exp_m1` library functions call their equivalent cmath implementations which is slower but more accurate so moving checks for these under this new lint.
28 lines
910 B
Text
28 lines
910 B
Text
error: (e.pow(x) - 1) can be computed more accurately
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--> $DIR/floating_point_exp.rs:6:13
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LL | let _ = x.exp() - 1.0;
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| ^^^^^^^^^^^^^ help: consider using: `x.exp_m1()`
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= note: `-D clippy::imprecise-flops` implied by `-D warnings`
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error: (e.pow(x) - 1) can be computed more accurately
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--> $DIR/floating_point_exp.rs:7:13
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LL | let _ = x.exp() - 1.0 + 2.0;
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| ^^^^^^^^^^^^^ help: consider using: `x.exp_m1()`
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error: (e.pow(x) - 1) can be computed more accurately
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--> $DIR/floating_point_exp.rs:13:13
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LL | let _ = x.exp() - 1.0;
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| ^^^^^^^^^^^^^ help: consider using: `x.exp_m1()`
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error: (e.pow(x) - 1) can be computed more accurately
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--> $DIR/floating_point_exp.rs:14:13
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LL | let _ = x.exp() - 1.0 + 2.0;
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| ^^^^^^^^^^^^^ help: consider using: `x.exp_m1()`
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error: aborting due to 4 previous errors
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