llround

llround

Round floating-point to long long integer

Portability: C99

SYNOPSIS
DESCRIPTION
RETURN VALUE
IMPLEMENTATION
RELATED FUNCTIONS
SEE ALSO

SYNOPSIS

   #include <math.h>

   long long llround(double x);
   long long llroundf(float x);
   long long llroundl(long double x);

DESCRIPTION

llround rounds its argument to the nearest integral value and returns it as a long long integer. If two results are equally near, lround rounds away from zero.

The function name llroundf should be used for float arguments, and llroundl for long double arguments. Alternately, if the header file tgmath.h is included, llround may be used with any numeric argument type.

RETURN VALUE

llround returns its argument rounded to the nearest integer.

IMPLEMENTATION

llround is implemented as a built-in function unless it is undefined by a #undef statement.

RELATED FUNCTIONS

ceil, floor, llrint, lrint, lround, nearbyint, rint, round, trunc

SEE ALSO

"Mathematical Functions" in Chapter 2, "Function Categories"

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