| .\" Copyright (c) 2003, Steven G. Kargl |
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| .\" $FreeBSD: src/lib/msun/man/round.3,v 1.6 2005/06/15 19:04:04 ru Exp $ |
| .\" |
| .Dd April 7, 2005 |
| .Dt ROUND 3 |
| .Os |
| .Sh NAME |
| .Nm round , |
| .Nm roundf , |
| .Nm roundl |
| .Nd round to nearest integral value |
| .Sh LIBRARY |
| .Lb libm |
| .Sh SYNOPSIS |
| .In math.h |
| .Ft double |
| .Fn round "double x" |
| .Ft float |
| .Fn roundf "float x" |
| .Ft "long double" |
| .Fn roundl "long double x" |
| .Sh DESCRIPTION |
| The |
| .Fn round , |
| .Fn roundf , |
| and |
| .Fn roundl |
| functions return the nearest integral value to |
| .Fa x ; |
| if |
| .Fa 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). |
| .Sh SEE ALSO |
| .Xr ceil 3 , |
| .Xr floor 3 , |
| .Xr ieee 3 , |
| .Xr lrint 3 , |
| .Xr lround 3 , |
| .Xr math 3 , |
| .Xr rint 3 , |
| .Xr trunc 3 |
| .Sh STANDARDS |
| These functions conform to |
| .St -isoC-99 . |
| .Sh HISTORY |
| The |
| .Fn round |
| and |
| .Fn roundf |
| functions appeared in |
| .Fx 5.3 . |
| The |
| .Fn roundl |
| function appeared in |
| .Fx 6.0 . |