/usr/include/geomview/complex.h is in libgeomview-dev 1.9.4-4.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | /* Copyright (C) 1992-1998 The Geometry Center
* Copyright (C) 1998-2000 Stuart Levy, Tamara Munzner, Mark Phillips
*
* This file is part of Geomview.
*
* Geomview is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* Geomview is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Geomview; see the file COPYING. If not, write
* to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139,
* USA, or visit http://www.gnu.org.
*/
#ifndef _complex_
#define _complex_
#include <math.h>
typedef struct {
double real, imag;
} complex;
typedef complex sl2c_matrix[2][2];
#ifndef PROTOTYPES
Please #include options.h BEFORE complex.h.
#endif
#if PROTOTYPES
extern complex cplx_minus(complex, complex),
cplx_plus(complex, complex),
cplx_mult(complex, complex),
cplx_div(complex, complex);
extern double modulus(complex);
extern complex cplx_sqrt(complex);
extern void sl2c_mult(sl2c_matrix, sl2c_matrix, sl2c_matrix);
extern void sl2c_copy(sl2c_matrix, sl2c_matrix);
extern void sl2c_normalize(sl2c_matrix);
extern void sl2c_invert(sl2c_matrix, sl2c_matrix);
extern double sl2c_norm_squared(sl2c_matrix);
extern void sl2c_adjoint(sl2c_matrix, sl2c_matrix);
extern double acosh(double);
#else
extern complex cplx_minus(),
cplx_plus(),
cplx_mult(),
cplx_div();
extern double modulus();
extern complex cplx_sqrt();
extern double sl2c_norm_squared();
/*extern double acosh();*/
#endif
extern complex zero;
extern complex one;
#endif
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