rint, rintf - round to integral value in floating-point format
Math Library (libm, -lm)
The rint() function returns the integral value (represented as a double
precision number) nearest to x according to the prevailing rounding mode.
abs(3), ceil(3), fabs(3), floor(3), ieee(3), math(3)
A rint() function appeared in Version 6 AT&T UNIX.
BSD March 10, 1994 BSD
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