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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     double pinf = 1.0/0.0;
  5.     double ninf = -1.0/0.0;
  6.     double nan = pinf + ninf;
  7.  
  8.     printf("%lg %lg %lg\n", pinf, ninf, nan);
  9.  
  10.     printf("%s\n", nan > pinf ? "true" : "false");
  11.     printf("%s\n", nan < pinf ? "true" : "false");
  12.     printf("%s\n", nan == pinf ? "true" : "false");
  13.     printf("%s\n", nan > ninf ? "true" : "false");
  14.     printf("%s\n", nan < ninf ? "true" : "false");
  15.     printf("%s\n", nan == ninf ? "true" : "false");
  16.  
  17.     return 0;
  18. }
Success #stdin #stdout 0.02s 1720KB
comments (?)
stdin 
Standard input is empty
stdout 
inf -inf nan
false
false
false
false
false
false
https://ideone.com/RT1PxA
language:
C (gcc 8.3)
created:
13 years ago
visibility:
secret

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