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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  accord-
       ing 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  representable  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  cur-
       rent 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 argument,
       they raise the inexact floating-point exception.

FUTURE DIRECTIONS
       None.

SEE ALSO
       feclearexcept()	,  fetestexcept()  ,  lrint()  ,   the	 Base	Definitions   volume   of
       IEEE Std 1003.1-2001,  Section  4.18, Treatment of Error Conditions for Mathematical Func-
       tions, <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 orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003					LLRINT(P)
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