On Sep 24, 5:07 pm, rupesh0...@gmail.com wrote:   
   > Which compiler are you using, which platform, and what command line   
   > options? A simple optimization flag (O or O2) should have taken the   
   > invariant outside the loop.   
   >   
   > -rupesh.   
      
          I set the optimization level O3, and the c compiler is from   
   freescale The platform is MSC8144, in which the core is SC3400.   
   Jogging   
      
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