round, lround, llround

Defined in header `<math.h>`

float roundf( float arg );		(since C99)

double round( double arg );		(since C99)

long double roundl( long double arg );		(since C99)

long lroundf( float arg );		(since C99)

long lround( double arg );		(since C99)

long lroundl( long double arg );		(since C99)

long long llroundf( float arg );		(since C99)

long long llround( double arg );		(since C99)

long long llroundl( long double arg );		(since C99)

Computes nearest integer to arg. Number is rounded away from zero in halfway cases

arg

-

floating point value

Nearest integer to arg.


floor	nearest integer not greater than the given value (function) [edit]

ceil	nearest integer not less than the given value (function) [edit]

trunc (C99)	nearest integer not greater in magnitude than the given value (function) [edit]

C++ documentation for round

Common mathematical functions
Floating-point environment
Complex number arithmetics
Random number generation
Type-generic math