Hey, all! I’ve just released saline , a shard for using saturating arithmetic in Crystal. This is something I’ve been meaning to do, but some recent discussion motivated me to make a shard available. I’d love to get some feedback if anyone has any ideas (especially if you’re actually going to be usi…

Cool :slight_smile: For the readme example, how about something like n = Saturating(Int32).new(Int32::MAX - 2) n += 20 # => 2147483647 (Int32::MAX) m = Saturating(Int32).new(Int32::MIN + 3) m -= 30 # => -2147483648 (Int32::MIN) At first I was confused that you’d pass the (arbitrary) maximum valu…

@RespiteSage using begin/rescue to recover from exception will probably be slow. In Arithmethic overflow should not raise an exception I shared the following snippet that uses llvm intrinsics for the task lib LibIntrinsics fun sat_uadd8 = "llvm.uadd.sat.i8"(a : UInt8, b : UInt8) : UInt8 end modu…

[image] jhass: For the readme example, how about something like… This is a good point. I’ll update the README. In particular, my number choice seems to have caused confusion already… [image] jhass: I’m not sure why you’d want to keep multiple implementation around, the intrinsics version…

[image] RespiteSage: [image] Arithmethic overflow should not raise an exception Would be better and more bonus points if we could simply do Saturating.new(0_u32) … I don’t think this is possible, but I’ll look into it. It should be possible, just don’t supply a generic arg and T should …

Before introducing the &+ and others operators for wrapping operations there were some proposal and discussion about how wrapping types can be used. If interested, check https://github.com/crystal-lang/crystal/pull/6223 .

@RespiteSage That was so nice of you to help out :heart: You did nothing wrong and it is one person acting in a hostile manner. Your contribution to the conversation by creating a solution is a great idea!

Saline v0.2.0 has been released! The documentation is still pretty lacking, but the big thing is that Saturating is much faster in almost every case due to a new LLVM-backed implementation. It’s pretty complicated under the hood, and it’s currently only properly implemented for Int* and UInt* types…

Saline: Saturating Arithmetic in Crystal

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Crystal 0.34.0 has been released! Official	41	2274	April 13, 2020
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Saline: Saturating Arithmetic in Crystal

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