1 /* Copyright (C) 1996 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If
16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
17 Cambridge, MA 02139, USA. */
25 #define float_type double
28 #define __CONCATX(a,b) __CONCAT(a,b)
31 __CONCATX(__kernel_
,FUNC
) (x
, y
, iy
)
36 float_type tan_x
, tan_y
;
37 tan_x
= __m81_u_(__CONCATX(__
,FUNC
)) (x
);
38 tan_y
= __m81_u_(__CONCATX(__
,FUNC
)) (y
);
40 return (tan_x
+ tan_y
) / (1 - tan_x
* tan_y
);
42 return (tan_x
* tan_y
- 1) / (tan_x
+ tan_y
);