102 lines
2.8 KiB
Groff
102 lines
2.8 KiB
Groff
.\" Copyright (c) 1991 The Regents of the University of California.
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" from: @(#)acos.3 5.1 (Berkeley) 5/2/91
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.\" %FreeBSD: src/lib/msun/man/acos.3,v 1.6.2.4 2001/12/17 10:08:36 ru Exp %
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.\"
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.\" $FreeBSD$
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.Dd May 2, 1991
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.Dt ACOS 3
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.Os
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.Sh ̾¾Î
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.Nm acos ,
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.Nm acosf
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.Nd µÕ;¸¹´Ø¿ô
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.Sh ¥é¥¤¥Ö¥é¥ê
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.Lb libm
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.Sh ½ñ¼°
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.Fd #include <math.h>
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.Ft double
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.Fn acos "double x"
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.Ft float
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.Fn acosf "float x"
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.Sh ²òÀâ
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.Fn acos
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¤ª¤è¤Ó
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.Fn acosf
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´Ø¿ô¤Ï¡¢
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.Fa x
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¤ÎµÕ;¸¹¤Î¼çÃͤò·×»»¤·¤Þ¤¹¡£
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.Bq -1 , +1
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¤Î¶è´Ö³°¤Î°ú¿ô¤Ë¤è¤Ã¤Æ¡¢Îΰ襨¥é¡¼¤¬È¯À¸¤·¤Þ¤¹¡£
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´Ý¤á¤Ë¤è¤ë¸íº¹¤ÎµÄÏÀ¤Ï¡¢
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.Xr math 3
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¤ò»²¾È¤·¤Æ¤¯¤À¤µ¤¤¡£
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.Sh Ìá¤êÃÍ
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.Fn acos
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¤ª¤è¤Ó
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.Fn acosf
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´Ø¿ô¤Ï¡¢
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.Bq 0 , \*(Pi
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¥é¥¸¥¢¥ó¤Î¶è´Ö¤ÎµÕ;¸¹¤òÊÖ¤·¤Þ¤¹¡£
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.Tn VAX
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¤ª¤è¤Ó
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.Tn Tahoe
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¤Ç¤Ï¡¢
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.Bd -unfilled -offset indent
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.Pf \&| Ns Ar x Ns \&| > 1
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.Ed
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.Pp
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¤Î¾ì¹ç¤Ë¡¢
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.Fn acos x
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¤Ï¥°¥í¡¼¥Ð¥ëÊÑ¿ô
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.Va errno
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¤ò
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.Er EDOM
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¤ËÀßÄꤷ¡¢Í½Ì󤵤줿¥ª¥Ú¥é¥ó¥É¥Õ¥©¥ë¥È¤¬À¸À®¤µ¤ì¤Þ¤¹¡£
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.Sh ´ØÏ¢¹àÌÜ
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.Xr asin 3 ,
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.Xr atan 3 ,
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.Xr atan2 3 ,
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.Xr cos 3 ,
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.Xr cosh 3 ,
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.Xr math 3 ,
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.Xr sin 3 ,
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.Xr sinh 3 ,
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.Xr tan 3 ,
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.Xr tanh 3
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.Sh µ¬³Ê
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.Fn acos
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´Ø¿ô¤Ï¡¢
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.St -isoC
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¤ËŬ¹ç¤·¤Æ¤¤¤Þ¤¹¡£
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