| POSITIVE_INF | Constant (Pseudo-constant)

math.h, timath.h

Represents an infinitely large positive quantity.

`POSITIVE_INF` represents an infinitely large positive quantity. TIOS generates `POSITIVE_INF` when the result is infinite in magnitude, but when it is known to be positive (for example, atanh returns `POSITIVE_INF` when the argument is equal to 1). TIOS also generates `POSITIVE_INF` as the result of positive overflow (i.e. when the result is positive and too big to be represented in `float` type), and as the result of rounding extremely big positive numbers using round14 or round12_err.
TIOS allows much greater flexibility when working with "signed" infinities than with UNSIGNED_INF. To check whether a value is signed infinity, use is_sinf. `POSITIVE_INF` belongs to the class of "transfinite" numbers (see is_transfinite).

See also: NEGATIVE_INF, UNSIGNED_INF, POSITIVE_ZERO, is_transfinite