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40 .Nd round-to-closest integer functions
50 function finds the integer (represented as a double precision number)
53 in the direction of the prevailing rounding mode.
58 is equivalent to adding half to the magnitude
59 and then rounding towards zero.
61 In the default rounding mode, to nearest,
62 on a machine that conforms to
66 is the integer nearest
68 with the additional stipulation
74 Other rounding modes can make
80 or round towards zero.
82 Another way to obtain an integer near
85 .Bd -literal -offset indent
86 double x;\0\0\0\0 int k;\0\0\0\0k\0=\0x;
89 Most C compilers round
91 towards 0 to get the integer
100 first, whichever you intend.
101 Also note that, if x is larger than
103 can accommodate, the value of
105 and the presence or absence of an integer overflow are hard to