Unsigned -> signed integer casting

[unique temple]

How can I make this a one-liner? Return type is i32 and maxImageDimension2D is u32 that I know will always be less than 1>>31

        const t: u31 = @truncate(properties.limits.maxImageDimension2D);
        return @intCast(t);

[low pine]

just intcast it directly in this case, leave out the truncate

[magic cosmos]

in the general case const foo: T = ... can be replaced in inline situations with @as(T, ...)

[low pine]

if your assumption turns out to he wrong, it will panic in debug mode or be UB in releasefast

[unique temple]

couldn't work out how to get the truncate to infer type so thanks for that, think I'll accept the UB then if that's how zig handles it cheers

[low pine]

return @intCast(@as(u31, @truncate(properties.limit.maxImageDimension2D)));

but again, if you are truly confident that maxImageDimension2D will be 1 >> 31 or less, just leave off the truncate

[low pine]

but if you aren’t sure, instead of using truncate, i would use std.math.cast instead and return an error if the value doesnt fit