Defined in header
#define INFINITY /*implementation defined*/
If the implementation supports floating-point infinities, the macro
INFINITY expands to constant expression of type float which evaluates to positive or unsigned infinity.
If the implementation does not support floating-point infinities, the macro
INFINITY expands to a positive value that is guaranteed to overflow a float at compile time, and the use of this macro generates a compiler warning.
The style used to print an infinity is implementation defined.
Show style used to print an infinity and IEEE format.
INFINITY: inf 7ff0000000000000
- C11 standard (ISO/IEC 9899:2011):
- 7.12/4 INFINITY (p: 231-232)
- C99 standard (ISO/IEC 9899:1999):
- 7.12/4 INFINITY (p: 212-213)
| checks if the given number is infinite |
| indicates value too big to be representable (infinity) by float, double and long double respectively |
C++ documentation for INFINITY