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  1. #include <math.h>
  2. #include <stdio.h>
  3. #include <string.h>
  4.  
  5. int main()
  6. {
  7.     long double ld = nanl("nan");
  8.     printf("nan (%d): %Lf\n", isnan(ld), ld);
  9.     unsigned char data[10]={0x5b, 0x01, 0x04, 0x5e, 0x85, 0x00, 0x00, 0x00, 0xd8, 0x59};
  10.     memcpy(&ld, data, 10);
  11.     printf("nan (%d): %Lf\n", isnan(ld), ld);
  12. }
  13.  
Success #stdin #stdout 0s 15240KB
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stdin
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Standard input is empty
stdout
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nan (1): nan
nan (1): nan
https://ideone.com/CqqtDe
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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