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-.TH FLOOR 3 2010-09-20 "" "Linux Programmer's Manual"
+.TH FLOOR 3 2013-07-23 "" "Linux Programmer's Manual"
.SH NAME
floor, floorf, floorl \- largest integral value not greater than argument
.SH SYNOPSIS
These functions return the floor of
.IR x .
-If \fIx\fP is integral, +0, \-0, NaN, or an infinity,
-\fIx\fP itself is returned.
+If
+.I x
+is integral, +0, \-0, NaN, or an infinity,
+.I x
+itself is returned.
.SH ERRORS
No errors occur.
POSIX.1-2001 documents a range error for overflows, but see NOTES.
+.SH ATTRIBUTES
+.SS Multithreading (see pthreads(7))
+The
+.BR floor (),
+.BR floorf (),
+and
+.BR floorl ()
+functions are thread-safe.
.SH CONFORMING TO
C99, POSIX.1-2001.
The variant returning
.BR rint (3),
.BR round (3),
.BR trunc (3)
+.SH COLOPHON
+This page is part of release 3.79 of the Linux
+.I man-pages
+project.
+A description of the project,
+information about reporting bugs,
+and the latest version of this page,
+can be found at
+\%http://www.kernel.org/doc/man\-pages/.