'\" te
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.TH llrint 3M "12 Jul 2006" "SunOS 5.11" "Mathematical Library Functions"
.SH NAME
llrint, llrintf, llrintl \- round to nearest integer value using current
rounding direction
.SH SYNOPSIS
.LP
.nf
c99 [ \fIflag\fR... ] \fIfile\fR... \fB-lm\fR [ \fIlibrary\fR... ]
#include <math.h>

\fBlong long\fR \fBllrint\fR(\fBdouble\fR \fIx\fR);
.fi

.LP
.nf
\fBlong long\fR \fBllrintf\fR(\fBfloat\fR \fIx\fR);
.fi

.LP
.nf
\fBlong long\fR \fBllrintl\fR(\fBlong double\fR \fIx\fR);
.fi

.SH DESCRIPTION
.sp
.LP
These functions round their argument to the nearest integer value, rounding
according to the current rounding direction.
.SH RETURN VALUES
.sp
.LP
 Upon successful completion, these functions return the rounded integer value.
.sp
.LP
If \fIx\fR is NaN, a domain error occurs and an unspecified value is returned.
.sp
.LP
If \fIx\fR is +Inf, a domain error occurs and an unspecified value is returned.
.sp
.LP
If \fIx\fR is -Inf, a domain error occurs and an unspecified value is returned.
.sp
.LP
If the correct value is positive and too large to represent as a \fBlong
long\fR, a domain error occurs and an unspecified value is returned.
.sp
.LP
 If the correct value is negative and too large to represent as a \fBlong
long\fR, a domain error occurs and an unspecified value is returned.
.SH ERRORS
.sp
.LP
These functions will fail if:
.sp
.ne 2
.mk
.na
\fBDomain Error\fR
.ad
.RS 16n
.rt  
The \fIx\fR argument is NaN or \(+-Inf, or the correct value is not
representable as an integer.
.sp
If the integer expression (\fBmath_errhandling\fR & \fBMATH_ERREXCEPT\fR) is
non-zero, then the invalid floating-point exception will be raised.
.RE

.SH USAGE
.sp
.LP
An application wanting to check for exceptions should call
\fBfeclearexcept\fR(\fBFE_ALL_EXCEPT\fR) before calling these functions. On
return, if \fBfetestexcept\fR(\fBFE_INVALID\fR | \fBFE_DIVBYZERO\fR |
\fBFE_OVERFLOW\fR | \fBFE_UNDERFLOW\fR) is non-zero, an exception has been
raised. An application should either examine the return value or check the
floating point exception flags to detect exceptions.
.sp
.LP
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 argument, they raise the inexact
floating-point exception.
.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
tab() box;
cw(2.75i) |cw(2.75i) 
lw(2.75i) |lw(2.75i) 
.
ATTRIBUTE TYPEATTRIBUTE VALUE
_
Interface StabilityStandard
_
MT-LevelMT-Safe
.TE

.SH SEE ALSO
.sp
.LP
\fBfeclearexcept\fR(3M), \fBfetestexcept\fR(3M), \fBlrint\fR(3M),
\fBmath.h\fR(3HEAD), \fBattributes\fR(5), \fBstandards\fR(5)