Re: [PATCH] asm-generic magic

From: David S. Miller (davem@redhat.com)
Date: Wed May 07 2003 - 09:31:55 EST


   From: george anzinger <george@mvista.com>
   Date: Wed, 07 May 2003 08:33:27 -0700
   
   Rather I was interested in introducing a scaled math header. It
   would contain routines to allow access to the 64 bit mpy and div
   instructions, which ,of course, can be done in C but, if you don't
   want the 64-bit lib, must be done with a rather large bit of code to
   do simple s32=s64/s32 and s32=s64%s32 calculations. And, on 64-bit
   archs the whole problem goes away.

I think you want to do something more like what the byteorder swabbing
interfaces do. Let the arch override whatever it'd like to optimize,
but provide default 32-bit/64-bit centric "implementations" under
linux/scaled_math/
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