RINT(3) Library Functions Manual RINT(3) NAME nearbyint, nearbyintf, nearbyintl, rint, rintf, rintl -- round to integral value in floating-point format LIBRARY Math Library (libm, -lm) SYNOPSIS #include <math.h> double nearbyint(double x); float nearbyintf(float x); long double nearbyintl(long double x); double rint(double x); float rintf(float x); long double rintl(long double x); DESCRIPTION The rint(), rintf(), and rintl() functions return the integral value near- est to x according to the prevailing rounding mode. These functions raise an inexact exception when the original argument is not an exact integer. The nearbyint(), nearbyintf(), and nearbyintl() functions perform the same operation, except that they do not raise an inexact exception. SEE ALSO abs(3), ceil(3), fabs(3), fenv(3), floor(3), ieee(3), lrint(3), lround(3), math(3), round(3) STANDARDS These functions conform to ISO/IEC 9899:1999 ("ISO C99"). HISTORY A rint() function appeared in Version 6 AT&T UNIX. The nearbyint() and nearbyintf() functions appeared in FreeBSD 5.3, and the long double vari- ants were first available in FreeBSD 8.0. FreeBSD 15.1 January 13, 2008 RINT(3)
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