round(3) - NetBSD Manual Pages

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ROUND(3)                NetBSD Library Functions Manual               ROUND(3)


NAME

     round, roundf, roundl -- round to nearest integral value


LIBRARY

     Math Library (libm, -lm)


SYNOPSIS

     #include <math.h>

     double
     round(double x);

     float
     roundf(float x);

     long double
     roundl(long double x);


DESCRIPTION

     The round(), roundf(), and roundl() 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).


SEE ALSO

     ceil(3), floor(3), math(3), rint(3), trunc(3)


STANDARDS

     The round() and roundf() functions conform to ISO/IEC 9899:1999
     (``ISO C99'').


HISTORY

     The round() and roundf() functions appeared in NetBSD 2.0.

NetBSD 9.1                     November 12, 2013                    NetBSD 9.1