.SH RETURN VALUE
These functions return the rounded integer value.
-If \fIx\fP is integral, +0, \-0, NaN, or infinite,
-\fIx\fP itself is returned.
+If
+.I x
+is integral, +0, \-0, NaN, or infinite,
+.I x
+itself is returned.
.SH ERRORS
No errors occur.
POSIX.1-2001 documents a range error for overflows, but see NOTES.