| .\" Copyright (c) 2005 David Schultz <das@FreeBSD.org> |
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| .\" $FreeBSD: src/lib/msun/man/lrint.3,v 1.2 2005/01/13 10:43:01 ru Exp $ |
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| .Dd January 11, 2005 |
| .Dt LRINT 3 |
| .Os |
| .Sh NAME |
| .Nm llrint , |
| .Nm llrintf , |
| .Nm lrint , |
| .Nm lrintf |
| .Nd "convert to integer" |
| .Sh LIBRARY |
| .Lb libm |
| .Sh SYNOPSIS |
| .In math.h |
| .Ft "long long" |
| .Fn llrint "double x" |
| .Ft "long long" |
| .Fn llrintf "float x" |
| .Ft long |
| .Fn lrint "double x" |
| .Ft long |
| .Fn lrintf "float x" |
| .Sh DESCRIPTION |
| The |
| .Fn lrint |
| function returns the integer nearest to its argument |
| .Fa x |
| according to the current rounding mode. |
| If the rounded result is too large to be represented as a |
| .Vt long |
| value, an invalid exception is raised and the return value is undefined. |
| Otherwise, if |
| .Fa x |
| is not an integer, |
| .Fn lrint |
| raises an inexact exception. |
| When the rounded result is representable as a |
| .Vt long , |
| the expression |
| .Fn lrint x |
| is equivalent to |
| .Po Vt long Pc Ns Fn rint x |
| (although the former may be more efficient). |
| .Pp |
| The |
| .Fn llrint , |
| .Fn llrintf , |
| and |
| .Fn lrintf |
| functions differ from |
| .Fn lrint |
| only in their input and output types. |
| .Sh SEE ALSO |
| .Xr lround 3 , |
| .Xr math 3 , |
| .Xr rint 3 , |
| .Xr round 3 |
| .Sh STANDARDS |
| The |
| .Fn llrint , |
| .Fn llrintf , |
| .Fn lrint , |
| and |
| .Fn lrintf |
| functions conform to |
| .St -isoC-99 . |
| .Sh HISTORY |
| These routines first appeared in |
| .Fx 5.4 . |