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group signed and unsigned integers in layout table #700

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Oct 20, 2019
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group signed and unsigned integers in layout table #700

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27 changes: 11 additions & 16 deletions src/type-layout.md
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Original file line number Diff line number Diff line change
Expand Up @@ -34,22 +34,17 @@ alignment of the type respectively.

The size of most primitives is given in this table.

|Type | `size_of::<Type>()`|
|-- |-- |
|bool | 1 |
|u8 | 1 |
|u16 | 2 |
|u32 | 4 |
|u64 | 8 |
|u128 | 16 |
|i8 | 1 |
|i16 | 2 |
|i32 | 4 |
|i64 | 8 |
|i128 | 16 |
|f32 | 4 |
|f64 | 8 |
|char | 4 |
| Type | `size_of::<Type>()`|
|-- |-- |
| `bool` | 1 |
| `u8` / `i8` | 1 |
| `u16` / `i16` | 2 |
| `u32` / `i32` | 4 |
| `u64` / `i64` | 8 |
| `u128` / `i128` | 16 |
| `f32` | 4 |
| `f64` | 8 |
| `char` | 4 |

`usize` and `isize` have a size big enough to contain every address on the
target platform. For example, on a 32 bit target, this is 4 bytes and on a 64
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