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Date: | 2001-01-21 (21:21) |
From: | Xavier Leroy <Xavier.Leroy@i...> |
Subject: | Re: unsigned comparisons on int32, int64, nativeint? |
> I have sought but not found unsigned comparisons on the integer types > int32, int64, and nativeint. I especially need `unsigned less than'. > Where might I find bindings for these operations? In a pinch, you can always use signed compares after shifting the arguments by min_int, e.g.: let ule_int32 a b = Int32.add a Int32.min_int <= Int32.add b Int32.min_int (I have a very strong feeling that it should work, but no doubt expert bit-twiddlers on this list will correct me if it doesn't.) The code generated for this is nowhere as efficient as a processor-native unsigned comparison, though. - Xavier Leroy