rust-clippy/tests/ui/cast.rs

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#[warn(
clippy::cast_precision_loss,
clippy::cast_possible_truncation,
clippy::cast_sign_loss,
clippy::cast_possible_wrap
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)]
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#[allow(clippy::no_effect, clippy::unnecessary_operation)]
fn main() {
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// Test clippy::cast_precision_loss
let x0 = 1i32;
x0 as f32;
let x1 = 1i64;
x1 as f32;
x1 as f64;
let x2 = 1u32;
x2 as f32;
let x3 = 1u64;
x3 as f32;
x3 as f64;
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// Test clippy::cast_possible_truncation
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1f32 as i32;
1f32 as u32;
1f64 as f32;
1i32 as i8;
1i32 as u8;
1f64 as isize;
1f64 as usize;
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// Test clippy::cast_possible_wrap
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1u8 as i8;
1u16 as i16;
1u32 as i32;
1u64 as i64;
1usize as isize;
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// Test clippy::cast_sign_loss
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1i32 as u32;
-1i32 as u32;
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1isize as usize;
-1isize as usize;
0i8 as u8;
i8::max_value() as u8;
i16::max_value() as u16;
i32::max_value() as u32;
i64::max_value() as u64;
i128::max_value() as u128;
(-1i8).abs() as u8;
(-1i16).abs() as u16;
(-1i32).abs() as u32;
(-1i64).abs() as u64;
(-1isize).abs() as usize;
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}