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c2cd1472a4
1 changed files with 3 additions and 6 deletions
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@ -26,14 +26,11 @@
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const print = @import("std").debug.print;
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pub fn main() void {
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// The first builtin, alphabetically, is:
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//
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// @addWithOverflow(comptime T: type, a: T, b: T, result: *T) bool
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// The second builtin, alphabetically, is:
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// @addWithOverflow(a: anytype, b: anytype) struct { @TypeOf(a, b), u1 }
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// * 'T' will be the type of the other parameters.
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// * 'a' and 'b' are numbers of the type T.
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// * 'result' is a pointer to space you're providing of type T.
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// * The return value is true if the addition resulted in a
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// value over or under the capacity of type T.
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// * The return value is a tuple with the result and a possible overflow bit.
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//
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// Let's try it with a tiny 4-bit integer size to make it clear:
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const a: u4 = 0b1101;
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