// Basic Fibonacci sequence example for code generaton analysis
//
// Build with "gcc -S fib.c -o fib.s" to get assembly code used in 
// article examples.
//

#define FIB_LIMIT_FOR_32_BIT 47
typedef unsigned int UINT32;

UINT32 seqIterations = FIB_LIMIT_FOR_32_BIT;
UINT32 Iterations = 1;
UINT32 idx = 0, jdx = 1;
UINT32 fib = 0, fib0 = 0, fib1 = 1;

#define FIB_TEST(seqCnt, iterCnt)      \
   for(idx=0; idx < iterCnt; idx++)    \
   {                                   \
      fib = fib0 + fib1;               \
      while(jdx < seqCnt)              \
      {                                \
         fib0 = fib1;                  \
         fib1 = fib;                   \
         fib = fib0 + fib1;            \
         jdx++;                        \
      }                                \
   }                                   \


void fib_wrapper(void)
{
   FIB_TEST(seqIterations, Iterations);
}

void null_wrapper(void)
{
}