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
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
/***********************************************************
Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior permission.
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* Math module -- standard C math library functions, pi and e */
#include "allobjects.h"
#include <errno.h>
#ifndef errno
extern int errno;
#endif
#include "modsupport.h"
#include <math.h>
#ifdef HUGE_VAL
#define CHECK(x) if (errno != 0) ; \
else if (-HUGE_VAL <= (x) && (x) <= HUGE_VAL) ; \
else errno = ERANGE
#else
#define CHECK(x) /* Don't know how to check */
#endif
static object *
math_error()
{
if (errno == EDOM)
err_setstr(ValueError, "math domain error");
else if (errno == ERANGE)
err_setstr(OverflowError, "math range error");
else
err_errno(RuntimeError);
return NULL;
}
static object *
math_1(args, func)
object *args;
double (*func) FPROTO((double));
{
double x;
if (!getdoublearg(args, &x))
return NULL;
errno = 0;
x = (*func)(x);
CHECK(x);
if (errno != 0)
return math_error();
else
return newfloatobject(x);
}
static object *
math_2(args, func)
object *args;
double (*func) FPROTO((double, double));
{
double x, y;
if (!get2doublearg(args, &x, &y))
return NULL;
errno = 0;
x = (*func)(x, y);
CHECK(x);
if (errno != 0)
return math_error();
else
return newfloatobject(x);
}
#define FUNC1(stubname, func) \
static object * stubname(self, args) object *self, *args; { \
return math_1(args, func); \
}
#define FUNC2(stubname, func) \
static object * stubname(self, args) object *self, *args; { \
return math_2(args, func); \
}
FUNC1(math_acos, acos)
FUNC1(math_asin, asin)
FUNC1(math_atan, atan)
FUNC2(math_atan2, atan2)
FUNC1(math_ceil, ceil)
FUNC1(math_cos, cos)
FUNC1(math_cosh, cosh)
FUNC1(math_exp, exp)
FUNC1(math_fabs, fabs)
FUNC1(math_floor, floor)
#ifndef AMOEBA
/* XXX This one is not in the Amoeba library yet, so what the heck... */
FUNC2(math_fmod, fmod)
#endif
FUNC1(math_log, log)
FUNC1(math_log10, log10)
#ifdef MPW_3_1 /* This hack is needed for MPW 3.1 but not for 3.2 ... */
FUNC2(math_pow, power)
#else
FUNC2(math_pow, pow)
#endif
FUNC1(math_sin, sin)
FUNC1(math_sinh, sinh)
FUNC1(math_sqrt, sqrt)
FUNC1(math_tan, tan)
FUNC1(math_tanh, tanh)
double frexp PROTO((double, int *));
double ldexp PROTO((double, int));
double modf PROTO((double, double *));
static object *
math_frexp(self, args)
object *self;
object *args;
{
object *v;
double x;
int i;
if (!getdoublearg(args, &x))
return NULL;
errno = 0;
x = frexp(x, &i);
CHECK(x);
if (errno != 0)
return math_error();
v = newtupleobject(2);
if (v != NULL) {
settupleitem(v, 0, newfloatobject(x));
settupleitem(v, 1, newintobject((long)i));
if (err_occurred()) {
DECREF(v);
v = NULL;
}
}
return v;
}
static object *
math_ldexp(self, args)
object *self;
object *args;
{
double x, y;
/* Cheat -- allow float as second argument */
if (!get2doublearg(args, &x, &y))
return NULL;
errno = 0;
x = ldexp(x, (int)y);
CHECK(x);
if (errno != 0)
return math_error();
else
return newfloatobject(x);
}
static object *
math_modf(self, args)
object *self;
object *args;
{
object *v;
double x, y;
if (!getdoublearg(args, &x))
return NULL;
errno = 0;
x = modf(x, &y);
CHECK(x);
if (errno != 0)
return math_error();
v = newtupleobject(2);
if (v != NULL) {
settupleitem(v, 0, newfloatobject(x));
settupleitem(v, 1, newfloatobject(y));
if (err_occurred()) {
DECREF(v);
v = NULL;
}
}
return v;
}
static struct methodlist math_methods[] = {
{"acos", math_acos},
{"asin", math_asin},
{"atan", math_atan},
{"atan2", math_atan2},
{"ceil", math_ceil},
{"cos", math_cos},
{"cosh", math_cosh},
{"exp", math_exp},
{"fabs", math_fabs},
{"floor", math_floor},
#ifndef AMOEBA
{"fmod", math_fmod},
#endif
{"frexp", math_frexp},
{"ldexp", math_ldexp},
{"log", math_log},
{"log10", math_log10},
{"modf", math_modf},
{"pow", math_pow},
{"sin", math_sin},
{"sinh", math_sinh},
{"sqrt", math_sqrt},
{"tan", math_tan},
{"tanh", math_tanh},
{NULL, NULL} /* sentinel */
};
void
initmath()
{
object *m, *d, *v;
m = initmodule("math", math_methods);
d = getmoduledict(m);
dictinsert(d, "pi", v = newfloatobject(atan(1.0) * 4.0));
DECREF(v);
dictinsert(d, "e", v = newfloatobject(exp(1.0)));
DECREF(v);
}
|
