2 * cmath - data structures for extended precision complex arithmetic
4 * Copyright (C) 1999 David I. Bell
6 * Calc is open software; you can redistribute it and/or modify it under
7 * the terms of the version 2.1 of the GNU Lesser General Public License
8 * as published by the Free Software Foundation.
10 * Calc is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
13 * Public License for more details.
15 * A copy of version 2.1 of the GNU Lesser General Public License is
16 * distributed with calc under the filename COPYING-LGPL. You should have
17 * received a copy with calc; if not, write to Free Software Foundation, Inc.
18 * 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
24 * Under source code control: 1993/07/30 19:42:45
25 * File existed as early as: 1993
27 * Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
31 #if !defined(__CMATH_H__)
35 #if defined(CALC_SRC) /* if we are building from the calc source tree */
36 # include "calc/qmath.h"
38 # include <calc/qmath.h>
43 * Complex arithmetic definitions.
46 NUMBER *real; /* real part of number */
47 NUMBER *imag; /* imaginary part of number */
48 long links; /* link count */
53 * Input, output, and conversion routines.
55 extern COMPLEX *comalloc(void);
56 extern COMPLEX *qqtoc(NUMBER *q1, NUMBER *q2);
57 extern void comfree(COMPLEX *c);
58 extern void comprint(COMPLEX *c);
59 extern void cprintfr(COMPLEX *c);
63 * Basic numeric routines.
66 extern COMPLEX *cadd(COMPLEX *c1, COMPLEX *c2);
67 extern COMPLEX *csub(COMPLEX *c1, COMPLEX *c2);
68 extern COMPLEX *cmul(COMPLEX *c1, COMPLEX *c2);
69 extern COMPLEX *cdiv(COMPLEX *c1, COMPLEX *c2);
70 extern COMPLEX *caddq(COMPLEX *c, NUMBER *q);
71 extern COMPLEX *csubq(COMPLEX *c, NUMBER *q);
72 extern COMPLEX *cmulq(COMPLEX *c, NUMBER *q);
73 extern COMPLEX *cdivq(COMPLEX *c, NUMBER *q);
74 extern COMPLEX *cscale(COMPLEX *c, long i);
75 extern COMPLEX *cshift(COMPLEX *c, long i);
76 extern COMPLEX *csquare(COMPLEX *c);
77 extern COMPLEX *cconj(COMPLEX *c);
78 extern COMPLEX *c_real(COMPLEX *c);
79 extern COMPLEX *c_imag(COMPLEX *c);
80 extern COMPLEX *cneg(COMPLEX *c);
81 extern COMPLEX *cinv(COMPLEX *c);
82 extern COMPLEX *cint(COMPLEX *c);
83 extern COMPLEX *cfrac(COMPLEX *c);
84 extern BOOL ccmp(COMPLEX *c1, COMPLEX *c2);
88 * More complicated functions.
90 extern COMPLEX *cpowi(COMPLEX *c, NUMBER *q);
91 extern NUMBER *cilog(COMPLEX *c, ZVALUE base);
95 * Transcendental routines. These all take an epsilon argument to
96 * specify how accurately these are to be calculated.
98 extern COMPLEX *cpower(COMPLEX *c1, COMPLEX *c2, NUMBER *epsilon);
99 extern COMPLEX *csqrt(COMPLEX *c, NUMBER *epsilon, long R);
100 extern COMPLEX *croot(COMPLEX *c, NUMBER *q, NUMBER *epsilon);
101 extern COMPLEX *cexp(COMPLEX *c, NUMBER *epsilon);
102 extern COMPLEX *cln(COMPLEX *c, NUMBER *epsilon);
103 extern COMPLEX *ccos(COMPLEX *c, NUMBER *epsilon);
104 extern COMPLEX *csin(COMPLEX *c, NUMBER *epsilon);
105 extern COMPLEX *ccosh(COMPLEX *c, NUMBER *epsilon);
106 extern COMPLEX *csinh(COMPLEX *c, NUMBER *epsilon);
107 extern COMPLEX *cpolar(NUMBER *q1, NUMBER *q2, NUMBER *epsilon);
108 extern COMPLEX *crel(COMPLEX *c1, COMPLEX *c2);
109 extern COMPLEX *casin(COMPLEX *c, NUMBER *epsilon);
110 extern COMPLEX *cacos(COMPLEX *c, NUMBER *epsilon);
111 extern COMPLEX *catan(COMPLEX *c, NUMBER *epsilon);
112 extern COMPLEX *cacot(COMPLEX *c, NUMBER *epsilon);
113 extern COMPLEX *casec(COMPLEX *c, NUMBER *epsilon);
114 extern COMPLEX *cacsc(COMPLEX *c, NUMBER *epsilon);
115 extern COMPLEX *casinh(COMPLEX *c, NUMBER *epsilon);
116 extern COMPLEX *cacosh(COMPLEX *c, NUMBER *epsilon);
117 extern COMPLEX *catanh(COMPLEX *c, NUMBER *epsilon);
118 extern COMPLEX *cacoth(COMPLEX *c, NUMBER *epsilon);
119 extern COMPLEX *casech(COMPLEX *c, NUMBER *epsilon);
120 extern COMPLEX *cacsch(COMPLEX *c, NUMBER *epsilon);
121 extern COMPLEX *cgd(COMPLEX *c, NUMBER *epsilon);
122 extern COMPLEX *cagd(COMPLEX *c, NUMBER *epsilon);
129 extern COMPLEX *swap_b8_in_COMPLEX(COMPLEX *dest, COMPLEX *src, BOOL all);
130 extern COMPLEX *swap_b16_in_COMPLEX(COMPLEX *dest, COMPLEX *src, BOOL all);
131 extern COMPLEX *swap_HALF_in_COMPLEX(COMPLEX *dest, COMPLEX *src, BOOL all);
135 * macro expansions to speed this thing up
137 #define cisreal(c) (qiszero((c)->imag))
138 #define cisimag(c) (qiszero((c)->real) && !cisreal(c))
139 #define ciszero(c) (cisreal(c) && qiszero((c)->real))
140 #define cisone(c) (cisreal(c) && qisone((c)->real))
141 #define cisnegone(c) (cisreal(c) && qisnegone((c)->real))
142 #define cisrunit(c) (cisreal(c) && qisunit((c)->real))
143 #define cisiunit(c) (qiszero((c)->real) && qisunit((c)->imag))
144 #define cisunit(c) (cisrunit(c) || cisiunit(c))
145 #define cistwo(c) (cisreal(c) && qistwo((c)->real))
146 #define cisint(c) (qisint((c)->real) && qisint((c)->imag))
147 #define ciseven(c) (qiseven((c)->real) && qiseven((c)->imag))
148 #define cisodd(c) (qisodd((c)->real) || qisodd((c)->imag))
149 #define clink(c) ((c)->links++, (c))
153 * Pre-defined values.
155 extern COMPLEX _czero_, _cone_, _conei_;
158 #endif /* !__CMATH_H__ */