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fea681da 1.\" Copyright 2001 Andries Brouwer <aeb@cwi.nl>.
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2.\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk
3.\" <mtk.manpages@gmail.com>
fea681da 4.\"
93015253 5.\" %%%LICENSE_START(VERBATIM)
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6.\" Permission is granted to make and distribute verbatim copies of this
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9.\"
10.\" Permission is granted to copy and distribute modified versions of this
11.\" manual under the conditions for verbatim copying, provided that the
12.\" entire resulting derived work is distributed under the terms of a
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c13182ef 14.\"
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15.\" Since the Linux kernel and libraries are constantly changing, this
16.\" manual page may be incorrect or out-of-date. The author(s) assume no
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20.\" which is licensed free of charge, as they might when working
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23.\" Formatted or processed versions of this manual, if unaccompanied by
24.\" the source, must acknowledge the copyright and authors of this work.
4b72fb64 25.\" %%%LICENSE_END
fea681da 26.\"
97986708 27.TH FLOOR 3 2016-03-15 "" "Linux Programmer's Manual"
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28.SH NAME
29floor, floorf, floorl \- largest integral value not greater than argument
30.SH SYNOPSIS
31.nf
32.B #include <math.h>
33.sp
34.BI "double floor(double " x );
35.br
36.BI "float floorf(float " x );
37.br
38.BI "long double floorl(long double " x );
39.fi
40.sp
20c58d70 41Link with \fI\-lm\fP.
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42.sp
43.in -4n
44Feature Test Macro Requirements for glibc (see
45.BR feature_test_macros (7)):
46.in
47.sp
48.ad l
49.BR floorf (),
50.BR floorl ():
b90c43a8 51.RS 4
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52_ISOC99_SOURCE || _POSIX_C_SOURCE\ >=\ 200112L
53 || /* Since glibc 2.19: */ _DEFAULT_SOURCE
54 || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
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55.RE
56.ad
fea681da 57.SH DESCRIPTION