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LLRINT(P)		   POSIX Programmer's Manual		     LLRINT(P)

NAME
       llrint,	llrintf,  llrintl  -  round to the nearest integer value using
       current rounding direction

SYNOPSIS
       #include <math.h>

       long long llrint(double x);
       long long llrintf(float x);
       long long llrintl(long double x);

DESCRIPTION
       These functions shall round  their  argument  to	 the  nearest  integer
       value, rounding according to the current rounding direction.

       An  application	wishing to check for error situations should set errno
       to zero and  call  feclearexcept(FE_ALL_EXCEPT)	before	calling	 these
       functions.   On return, if errno is non-zero or fetestexcept(FE_INVALID
       | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW) is non-zero, an error  has
       occurred.

RETURN VALUE
       Upon  successful	 completion,  these functions shall return the rounded
       integer value.

       If x is NaN, a domain error shall occur, and an	unspecified  value  is
       returned.

       If  x  is  +Inf, a domain error shall occur and an unspecified value is
       returned.

       If x is -Inf, a domain error shall occur and an	unspecified  value  is
       returned.

       If  the	correct value is positive and too large to represent as a long
       long, a domain error shall occur and an unspecified value is returned.

       If the correct value is negative and too large to represent as  a  long
       long, a domain error shall occur and an unspecified value is returned.

ERRORS
       These functions shall fail if:

       Domain Error
	      The  x argument is NaN or ±Inf, or the correct value is not rep‐
	      resentable as an integer.

       If the integer expression (math_errhandling & MATH_ERRNO) is  non-zero,
       then   errno  shall  be	set  to	 [EDOM].  If  the  integer  expression
       (math_errhandling &  MATH_ERREXCEPT)  is	 non-zero,  then  the  invalid
       floating-point exception shall be raised.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       On   error,   the   expressions	(math_errhandling  &  MATH_ERRNO)  and
       (math_errhandling & MATH_ERREXCEPT) are independent of each other,  but
       at least one of them must be non-zero.

RATIONALE
       These  functions	 provide  floating-to-integer  conversions. They round
       according to the current rounding direction. If the  rounded  value  is
       outside the range of the return type, the numeric result is unspecified
       and the invalid floating-point exception is raised. When they raise  no
       other  floating-point  exception	 and the result differs from the argu‐
       ment, they raise the inexact floating-point exception.

FUTURE DIRECTIONS
       None.

SEE ALSO
       feclearexcept() , fetestexcept() , lrint() , the Base Definitions  vol‐
       ume  of	IEEE Std 1003.1-2001,  Section 4.18, Treatment of Error Condi‐
       tions for Mathematical Functions, <math.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in  electronic  form
       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
       -- Portable Operating System Interface (POSIX),	The  Open  Group  Base
       Specifications  Issue  6,  Copyright  (C) 2001-2003 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open  Group.  In  the
       event of any discrepancy between this version and the original IEEE and
       The Open Group Standard, the original IEEE and The Open Group  Standard
       is  the	referee document. The original Standard can be obtained online
       at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group		     2003			     LLRINT(P)
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