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# INFINITY

From cppreference.com
< c‎ | numeric‎ | math

Defined in header `<math.h>` |  |
#define INFINITY /*implementation defined*/ |  | (since C99)

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.

### [edit] See also

isinf (C99) | checks if the given number is infinite (function) [edit]
HUGE_VALF HUGE_VAL HUGE_VALL (C99)(C99) | indicates value too big to be representable (infinity) by float, double and long double respectively (macro constant) [edit]
C++ documentation for INFINITY

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