fork download 
  1. #include <stdio.h>
  2. #include <stdint.h>
  3. #define STATIC_ANALYSIS (1)
  4.  
  5. int main(void) {
  6.     int32_t rate = -252262384;
  7.     static int32_t phaseAccumEL = 0;
  8. 	static int32_t phaseAccumAZ = 0;
  9. 	static uint32_t el_period_accum = 0;
  10. 	static uint32_t az_period_accum = 0;
  11.  
  12.     // for (int i = 0; i < 1000; i++)
  13.     // {
  14. 	    // int32_t phaseAccumEL += rate;
  15. 	    phaseAccumAZ += rate;
  16. #if STATIC_ANALYSIS
  17. 	    uint32_t phase_accum_az_uint = phaseAccumAZ;
  18. 	    uint32_t accum_az_upper = phase_accum_az_uint >> 25;
  19. 	    if (accum_az_upper > 64)
  20. 	    {
  21. 	    	accum_az_upper -= 128;
  22. 	    }
  23. 	    const int32_t adjustAZ = (int8_t)accum_az_upper;
  24. 	    phase_accum_az_uint &= (1 << 25) - 1;
  25. 	    phaseAccumAZ = phase_accum_az_uint;
  26. 	    printf("adjustAZ=%d phaseAccumAZ=%d, accum_az_upper=%d\n", adjustAZ, phaseAccumAZ, accum_az_upper);
  27. #else
  28. 	    int adjustAZ = phaseAccumAZ >> 25;
  29. 	    phaseAccumAZ &= (1 << 25) - 1;
  30. 	    printf("adjustAZ=%d phaseAccumAZ=%d\n", adjustAZ, phaseAccumAZ);
  31. #endif
  32. 	return 0;
  33. }
  34.  
Success #stdin #stdout 0s 5292KB
comments (?)
stdin 
Standard input is empty
stdout 
adjustAZ=-8 phaseAccumAZ=16173072, accum_az_upper=-8
https://ideone.com/9pkbxa
language:
C (gcc 8.3)
created:
9 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!