Author: Andrew Williams
Date: 09:02:40 01/19/05
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On January 19, 2005 at 11:55:43, Rémi Coulom wrote: >Hi, > >I am porting my chess program to 64 bit on an AMD64 Athlon processor. I have >noticed that, with gcc, sizeof(int)=4. I would have expected sizeof(int)=8. On >32-bit platforms, 32-bit variables are faster than 16-bit variables. I wonder if >64-bit variables are faster than 32-bit variables on 64-bit machines. I have >made a few experiments and did not notice much difference. > >Rémi There's some information here: http://www.devx.com/amd/Article/16101 Longs and pointers are 64 bits. Ints remain 32 bits. You can use -m64 to force a 64-bit compilation or -m32 to force 32-bit. I'm afraid that's all I know! Andrew
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