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Fixed description of @addWithOverflow

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This commit is contained in:
Chris Boesch 2023-06-10 22:04:03 +02:00
parent 80c92e3c94
commit 33d3cc1647
2 changed files with 4 additions and 5 deletions
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5
exercises/064_builtins.zig
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@ -13,7 +13,7 @@
// compiler, such as type introspection (the ability to examine
// type properties from within a program).
//
// Zig currently contains 101 builtin functions. We're certainly
// Zig contains over 100 builtin functions. We're certainly
// not going to cover them all, but we can look at some
// interesting ones.
//
@ -28,8 +28,7 @@ const print = @import("std").debug.print;
pub fn main() void {
// The second builtin, alphabetically, is:
// @addWithOverflow(a: anytype, b: anytype) struct { @TypeOf(a, b), u1 }
// * 'T' will be the type of the other parameters.
// * 'a' and 'b' are numbers of the type T.
// * 'a' and 'b' are numbers of anytype.
// * The return value is a tuple with the result and a possible overflow bit.
//
// Let's try it with a tiny 4-bit integer size to make it clear:

4
patches/patches/064_builtins.patch
View file

@ -1,8 +1,8 @@
67c67
66c66
< const expected_result: u8 = ???;
---
> const expected_result: u8 = 0b00010010;
82c82
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< const tupni: u8 = @bitReverse(input, tupni);
---
> const tupni: u8 = @bitReverse(input);