+++ /dev/null
-.\" Copyright 2008, Linux Foundation, written by Michael Kerrisk
-.\" <mtk.manpages@gmail.com>
-.\"
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-.\" manual provided the copyright notice and this permission notice are
-.\" preserved on all copies.
-.\"
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-.\" manual under the conditions for verbatim copying, provided that the
-.\" entire resulting derived work is distributed under the terms of a
-.\" permission notice identical to this one.
-.\"
-.\" Since the Linux kernel and libraries are constantly changing, this
-.\" manual page may be incorrect or out-of-date. The author(s) assume no
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-.\" the use of the information contained herein. The author(s) may not
-.\" have taken the same level of care in the production of this manual,
-.\" which is licensed free of charge, as they might when working
-.\" professionally.
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-.\"
-.TH ERFC 3 2013-10-29 "GNU" "Linux Programmer's Manual"
-.SH NAME
-erfc, erfcf, erfcl \- complementary error function
-.SH SYNOPSIS
-.nf
-.B #include <math.h>
-
-.BI "double erfc(double " x );
-.BI "float erfcf(float " x );
-.BI "long double erfcl(long double " x );
-
-.fi
-Link with \fI\-lm\fP.
-.sp
-.in -4n
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.in
-.sp
-.ad l
-.BR erfc ():
-.RS 4
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE || _ISOC99_SOURCE ||
-_POSIX_C_SOURCE\ >=\ 200112L;
-.br
-or
-.I cc\ -std=c99
-.RE
-.br
-.BR erfcf (),
-.BR erfcl ():
-.RS 4
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600|| _ISOC99_SOURCE ||
-_POSIX_C_SOURCE\ >=\ 200112L;
-.br
-or
-.I cc\ -std=c99
-.RE
-.ad b
-.SH DESCRIPTION
-The
-.BR erfc ()
-function returns the complementary error function of
-.IR x ,
-that is, 1.0 \- erf(x).
-.SH RETURN VALUE
-On success, these functions return the complementary error function of
-.IR x ,
-a value in the range [0,2].
-
-If
-.I x
-is a NaN, a NaN is returned.
-
-If
-.I x
-is +0 or \-0, 1 is returned.
-
-If
-.I x
-is positive infinity,
-+0 is returned.
-
-If
-.I x
-is negative infinity,
-+2 is returned.
-
-If the function result underflows and produces an unrepresentable value,
-the return value is 0.0.
-
-If the function result underflows but produces a representable
-(i.e., subnormal) value,
-.\" e.g., erfc(27) on x86-32
-that value is returned, and
-a range error occurs.
-.SH ERRORS
-See
-.BR math_error (7)
-for information on how to determine whether an error has occurred
-when calling these functions.
-.PP
-The following errors can occur:
-.TP
-Range error: result underflow (result is subnormal)
-.\" .I errno
-.\" is set to
-.\" .BR ERANGE .
-An underflow floating-point exception
-.RB ( FE_UNDERFLOW )
-is raised.
-.PP
-These functions do not set
-.IR errno .
-.\" FIXME . Is it intentional that these functions do not set errno?
-.\" Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6785
-.SH ATTRIBUTES
-.SS Multithreading (see pthreads(7))
-The
-.BR erfc (),
-.BR erfcf (),
-and
-.BR erfcl ()
-functions are thread-safe.
-.SH CONFORMING TO
-C99, POSIX.1-2001.
-The variant returning
-.I double
-also conforms to
-SVr4, 4.3BSD.
-.SH NOTES
-The
-.BR erfc (),
-.BR erfcf (),
-and
-.BR erfcl ()
-functions are provided to avoid the loss accuracy that
-would occur for the calculation 1-erf(x) for large values of
-.IR x
-(for which the value of erf(x) approaches 1).
-.SH SEE ALSO
-.BR cerf (3),
-.BR erf (3),
-.BR exp (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/.
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