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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. int main(void) {
  5.  
  6. 	double x =1e15;
  7. 	double x1 =1e16;
  8.  
  9. 	double result = sqrt(x + 1) - sqrt(x);
  10. 	double result1 = sqrt(x1 + 1) - sqrt(x1);
  11.  
  12. 	printf("sqrt(x + 1) - sqrt(x)");
  13. 	printf("result(10^15):%.25f\n",result);
  14. 	printf("result(10^16):%.25f\n",result1);
  15. 	printf("\n");
  16.  
  17. 	double x2 =1e15;
  18. 	double x3 =1e16;
  19.  
  20. 	double result2a= 1 / (sqrt(x2 + 1) + sqrt(x2));
  21. 	double result2b= 1 / (sqrt(x3 + 1) + sqrt(x3));
  22.  
  23. 	printf("1 / (sqrt(x + 1) + sqrt(x))");
  24. 	printf("result2(10^15):%.25f\n",result2a);
  25. 	printf("result2(10^16):%.25f\n",result2b);
  26. 	return 0;
  27. }
  28.  
Success #stdin #stdout 0s 5324KB
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stdout
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sqrt(x + 1) - sqrt(x)result(10^15):0.0000000186264514923095703
result(10^16):0.0000000000000000000000000

1 / (sqrt(x + 1) + sqrt(x))result2(10^15):0.0000000158113883008418926
result2(10^16):0.0000000050000000000000001
https://ideone.com/b5HDom
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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