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.\" Copyright 2008, Linux Foundation, written by Michael Kerrisk
.\" <mtk.manpages@gmail.com>
.\"
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" 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.\" manual page may be incorrect or out-of-date.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
.\" responsibility for errors or omissions, or for damages resulting from
.\" 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.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" Japanese Version Copyright (c) 2008 Akihiro MOTOKI
.\" all rights reserved.
.\" Translated 2008-09-15, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
.\"
.\"WORD: subnormal
.\"
.TH ERFC 3 2008-08-05 "GNU" "Linux Programmer's Manual"
.SH ̾
erfc, erfcf, erfcl \- ؿ
.SH
.nf
.B #include <math.h>
.BI "double erfc(double " x );
.BI "float erfcf(float " x );
.BI "long double erfcl(long double " x );
.fi
\fI\-lm\fP ǥ롣
.sp
.in -4n
glibc εǽޥ
.RB ( feature_test_macros (7)
):
.in
.sp
.ad l
.BR erfc ():
_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE || _ISOC99_SOURCE; or
.I cc\ -std=c99
.br
.BR erfcf (),
.BR erfcl ():
_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600|| _ISOC99_SOURCE; or
.I cc\ -std=c99
.ad b
.SH
.BR erfc ()
ؿ
.I x
ؿĤޤ 1.0 \- erf(x) ֤
.SH ֤
ȡδؿ
.I x
ؿ֤
֤ͤ [0,2] ϰϤȤʤ롣
.I x
NaN ξ硢NaN ֤롣
.I x
+0 \-0 ξ硢1 ֤롣
.I x
̵ξ硢+0 ֤롣
.I x
̵ξ硢+2 ֤롣
ؿη̤եɽǤʤͤȤʤϡ
֤ͤ 0.0 Ȥʤ롣
ؿη̤ե뤬
ɽǤ (Ĥޤ (subnormal)) Ȥʤϡ
.\" 㤨 x86-32 Ǥ erfc(27)
֤ͤ졢ϰϥ顼 (range error) ȯ롣
.SH 顼
δؿƤӽФݤ˥顼ȯȽˡˤĤƤξ
.BR math_error (7)
ȤΤȡ
.PP
ʲΥ顼ȯǽ롣
.TP
ϰϥ顼: ̤Υե (̤)
.\" .I errno
.\" is set to
.\" .BR ERANGE .
եư㳰
.RB ( FE_UNDERFLOW )
夬롣
.PP
δؿ
.I errno
ꤷʤ
.\" FIXME . Is it intentional that these functions do not set errno?
.\" Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6785
.SH
C99, POSIX.1-2001.
.I double
Ǥδؿ SVr4, 4.3BSD ˤƤ롣
.SH
.BR erfc ()
ؿƤΤϡ
.I x
礭ͤξ (erf(x) ͤ 1 ˶դƤȤ)
1-erf(x) ηˤ٤Τ뤿Ǥ롣
.SH Ϣ
.BR cerf (3),
.BR erf (3),
.BR exp (3)
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