2004-11-03 13:51:07 +00:00
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.\" Copyright 2001 Andries Brouwer <aeb@cwi.nl>.
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.\"
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.\" Permission is granted to make and distribute verbatim copies of this
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.\" manual provided the copyright notice and this permission notice are
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.\" preserved on all copies.
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.\"
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.\" Permission is granted to copy and distribute modified versions of this
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.\" manual under the conditions for verbatim copying, provided that the
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.\" entire resulting derived work is distributed under the terms of a
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.\" permission notice identical to this one.
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.\"
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.\" Since the Linux kernel and libraries are constantly changing, this
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.\" manual page may be incorrect or out-of-date. The author(s) assume no
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.\" responsibility for errors or omissions, or for damages resulting from
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.\" the use of the information contained herein. The author(s) may not
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.\" have taken the same level of care in the production of this manual,
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.\" which is licensed free of charge, as they might when working
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.\" professionally.
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.\"
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.\" Formatted or processed versions of this manual, if unaccompanied by
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.\" the source, must acknowledge the copyright and authors of this work.
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.\"
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.TH LRINT 3 2001-05-31 "" "Linux Programmer's Manual"
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.SH NAME
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lrint, lrintf, lrintl, llrint, llrintf, llrintl \- round to nearest integer
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.SH SYNOPSIS
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.nf
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.B #include <math.h>
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.sp
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.BI "long int lrint(double " x );
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.br
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.BI "long int lrintf(float " x );
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.br
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.BI "long int lrintl(long double " x );
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.sp
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.BI "long long int llrint(double " x );
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.br
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.BI "long long int llrintf(float " x );
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.br
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.BI "long long int llrintl(long double " x );
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.fi
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.sp
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2005-07-06 07:41:37 +00:00
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Compile with \-std=c99; link with \-lm.
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2004-11-03 13:51:07 +00:00
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.SH DESCRIPTION
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These functions round their argument to the nearest integer value,
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using the current rounding direction.
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If \fIx\fP is infinite or NaN, or if the rounded value is outside
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the range of the return type, the numeric result is unspecified.
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A domain error may occur if the magnitude of \fIx\fP is too large.
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.SH "RETURN VALUE"
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The rounded integer value.
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.SH ERRORS
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.TP
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.B EDOM
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The magnitude of \fIx\fP is too large and
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.I "(math_errhandling & MATH_ERRNO)"
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is non-zero.
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.SH "CONFORMING TO"
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C99.
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.SH "SEE ALSO"
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.BR ceil (3),
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.BR floor (3),
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.BR lround (3),
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.BR nearbyint (3),
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.BR rint (3),
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.BR round (3)
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