ReactOS  0.4.13-dev-99-g7e18b6d
acos.c
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1 /* Math functions for i387.
2  Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
3  This file is part of the GNU C Library.
4  Contributed by John C. Bowman <bowman@ipp-garching.mpg.de>, 1995.
5 
6  The GNU C Library is free software; you can redistribute it and/or
7  modify it under the terms of the GNU Lesser General Public
8  License as published by the Free Software Foundation; either
9  version 2.1 of the License, or (at your option) any later version.
10 
11  The GNU C Library is distributed in the hope that it will be useful,
12  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  Lesser General Public License for more details.
15 
16  You should have received a copy of the GNU Lesser General Public
17  License along with the GNU C Library; if not, write to the Free
18  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19  Boston, MA 02110-1301, USA.
20 */
21 
22 #include <math.h>
23 
24 #ifdef _MSC_VER
25 #pragma function(acos)
26 #endif
27 
28 double acos(double __x)
29 {
30  return atan2(sqrt(1.0 - __x * __x), __x);
31 }
_STLP_DECLSPEC complex< float > _STLP_CALL sqrt(const complex< float > &)
Definition: complex.cpp:188
valarray< _Tp > atan2(const valarray< _Tp > &__x, const valarray< _Tp > &__y)
Definition: _valarray.h:928
double acos(double __x)
Definition: acos.c:28