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Unsigned division of word by byte

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Karol Stasiak
2019-06-06 13:06:30 +02:00
parent 2583f280a8
commit e31737ad40
12 changed files with 299 additions and 26 deletions
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docs/lang/operators.md
+11 -5
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@@ -46,6 +46,8 @@ In the descriptions below, arguments to the operators are explained as follows:
* `byte` means any numeric one-byte type
* `unsigned byte` means any numeric one-byte type that is not signed
* `word` means any numeric two-byte type, or a byte expanded to a word; `pointer` is considered to be numeric
* `long` means any numeric type longer than two bytes, or a shorter type expanded to such length to match the other argument
@@ -91,11 +93,11 @@ TODO
`word * byte` (zpreg)
`byte * word` (zpreg)
* `/`, `%%`: unsigned division and unsigned modulo
`byte / byte`
* `/`, `%%`: unsigned division and unsigned modulo
`unsigned byte / unsigned byte` (zpreg)
`word / unsigned byte` (zpreg)
`constant word / constant word`
`constant long / constant long`
`constant long / constant long`
## Bitwise operators
@@ -197,12 +199,16 @@ An expression of form `a[f()] += b` may call `f` an undefined number of times.
* `*=`: multiplication in place
`mutable byte *= constant byte`
`mutable byte *= byte` (zpreg)
`mutable byte *= byte` (zpreg)
`mutable word *= unsigned byte` (zpreg)
* `*'=`: decimal multiplication in place
`mutable byte *'= constant byte`
* `/=`, `%%=`: unsigned division and modulo in place
`mutable unsigned byte /= unsigned byte` (zpreg)
`mutable word /= unsigned byte` (zpreg)
## Indexing
While Millfork does not consider indexing an operator, this is a place as good as any to discuss it.