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Merge pull request #321 from ratfactor/issue317

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Fixed description of @addWithOverflow
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Chris Boesch 2023-06-10 22:13:24 +02:00 committed by GitHub
commit cac5770e3c
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 // compiler, such as type introspection (the ability to examine
// type properties from within a program). // 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 // not going to cover them all, but we can look at some
// interesting ones. // interesting ones.
// //
@ -28,8 +28,7 @@ const print = @import("std").debug.print;
pub fn main() void { pub fn main() void {
// The second builtin, alphabetically, is: // The second builtin, alphabetically, is:
// @addWithOverflow(a: anytype, b: anytype) struct { @TypeOf(a, b), u1 } // @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 anytype.
// * 'a' and 'b' are numbers of the type T.
// * The return value is a tuple with the result and a possible overflow bit. // * 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: // 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 = ???;
--- ---
> const expected_result: u8 = 0b00010010; > const expected_result: u8 = 0b00010010;
82c82 81c81
< const tupni: u8 = @bitReverse(input, tupni); < const tupni: u8 = @bitReverse(input, tupni);
--- ---
> const tupni: u8 = @bitReverse(input); > const tupni: u8 = @bitReverse(input);