ISO/IEC 9899:1999:

2 In the above conversions from floating to integer, the use of
(cast)x can be replaced with
(cast)round(x), (cast)rint(x), (cast)nearbyint(x), (cast)trunc(x),
(cast)ceil(x), or (cast)floor(x). In addition, C’s floating-point to integer
conversion functions, lrint(), llrint(), lround(), and llround(), can be
used. They all meet LIA−1’s requirements on floating to integer rounding for in-range
values. For out-of-range values, the conversions shall silently wrap for the modulo types.

;)