### 1.43 `nearbyint`, `nearbyintf`—round to integer ¶

Synopsis

    #include <math.h>
    double nearbyint(double x);
    float nearbyintf(float x);

Description
The `nearbyint` functions round their argument to an integer value in floating-point format, using the current rounding direction and (supposedly) without raising the "inexact" floating-point exception. See the `rint` functions for the same function with the "inexact" floating-point exception being raised when appropriate.

Bugs
Newlib does not support the floating-point exception model, so that the floating-point exception control is not present and thereby what may be seen will be compiler and hardware dependent in this regard. The Newlib `nearbyint` functions are identical to the `rint` functions with respect to the floating-point exception behavior, and will cause the "inexact" exception to be raised for most targets.

Returns
x rounded to an integral value, using the current rounding direction.

Portability
ANSI C, POSIX

See Also
`rint`, `round`