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ROUND(3) Library Functions Manual ROUND(3)

round, roundf, roundlround to nearest integral value

#include <math.h>

round(double x);

roundf(float x);

long double
roundl(long double x);

The (), () and () functions return the nearest integral value to x; if x lies halfway between two integral values, then these functions return the integral value with the larger absolute value (i.e., they round away from zero).

ceil(3), floor(3), lrint(3), lround(3), nextafter(3), rint(3), trunc(3)

These functions conform to ISO/IEC 9899:1999 (“ISO C99”).

July 7, 2011 OpenBSD-current