On Friday, August 17, 2018 5:19:11 AM MDT SeanC4S via Digitalmars-d-learn wrote: > I used CUPS to print as pdf individual pages from the standard > library. I want to get all the basic information I need easily at > hand. > I used unpredictableSeed in my code. It seems to be a property > of something somewhere. > I hope it is thread safe. Who knows? I guess I'll look at the > source code like you say to try to understand. > The plan is to use D as a low level programming language as much > as possible. In particular to maintain the ability to translate > the code to other languages as easily as possible. > I wonder if there is an integer bit rotate instruction in D > somewhere? I see the dmd complier doesn't convert say s3=(s3 << > 45) | (s3 >>> 19); into a rotate instruction like gcc would. > Maybe I need to find some optimizer settings for dmd.
If really want good optimization, then use ldc. dmd does a decent job, but ldc is much better. dmd compiles very quickly, so it's likely to be better for development, but if you want every ounce of performance, it's a poor choice. - Jonathan M Davis
