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checker: permit int -> f32, int64 -> f64 and similar promotions again

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Uwe Krüger
2020-06-02 17:00:14 +02:00
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parent 640688d8cf
commit b0f66a4e05
3 changed files with 19 additions and 11 deletions
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doc/docs.md
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@@ -292,15 +292,14 @@ Please note that unlike C and Go, `int` is always a 32 bit integer.
There is an exceptions to the rule that all operators
in V must have values of the same type on both sides. A small primitive type
on one side can be automatically promoted if it fits
completely into the data range of the type on the other side, i.e. when
the promotion does not result in any data loss.
completely into the data range of the type on the other side.
These are the allowed possibilities:
```
i8 → i16 → int → i64
↘ ↘
f32 → f64
↗ ↗
↘ ↘
f32 → f64
↗ ↗
byte → u16 → u32 → u64 ⬎
↘ ↘ ↘ ptr
i8 → i16 → int → i64 ⬏