long long performance

Torbjorn Granlund tege@swox.com
Wed Dec 13 16:40:00 GMT 2000


dewar@gnat.com (Robert Dewar) writes:

  It is interesting to wonder if you can do better on the x86 by using
  the floating-point unit for the 64-bit integer multiply unit.
  
You hardly can.  The three necessary conversions are very costly.

-- 
Torbjörn


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