lroundf(3)
NAME
llround, llroundf, lround, lroundf -- convert to nearest integral value
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#include <math.h> long long llround(double x); long long llroundf(float x); long lround(double x); long lroundf(float x);
DESCRIPTION
The lround() function returns the integer nearest to its argument x, rounding away from zero in halfway cases. If the rounded result is too large to be represented as a long value, an invalid exception is raised and the return value is undefined. Otherwise, if x is not an integer, lround() may raise an inexact exception. When the rounded result is rep- resentable as a long, the expression lround(x) is equivalent to (long)round(x) (although the former may be more efficient). The llround(), llroundf(), and lroundf() functions differ from lround() only in their input and output types.
SEE ALSO
lrint(3), math(3), rint(3), round(3)
STANDARDS
The llround(), llroundf(), lround(), and lroundf() functions conform to ISO/IEC 9899:1999 (``ISO C99'').
HISTORY
These routines first appeared in FreeBSD 5.4. FreeBSD 5.4 January 11, 2005 FreeBSD 5.4
SPONSORED LINKS
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