File: floate.c

package info (click to toggle)
yforth 0.2.1-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, jessie, jessie-kfreebsd, sid, stretch
  • size: 396 kB
  • ctags: 788
  • sloc: ansic: 4,426; makefile: 23
file content (220 lines) | stat: -rw-r--r-- 4,193 bytes parent folder | download
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
/* yForth? - A Forth interpreter written in ANSI C
 * Copyright (C) 2012 Luca Padovani
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * ------------------------------------------------------------------------
 * Module name:     floate.c
 * Abstract:        floating-extension word set
 */

#include <stdio.h>
#include <math.h>
#include "yforth.h"
#include "floate.h"

/**************************************************************************/
/* VARIABLES **************************************************************/
/**************************************************************************/

static Cell precision = 15;

/**************************************************************************/
/* WORDS ******************************************************************/
/**************************************************************************/

void _d_f_store() {
    register double *addr = (double *) *sp++;
    *addr = (double) *fp++;
}

void _d_f_fetch() {
    register double *addr = (double *) *sp++;
    *--fp = (Real) *addr;
}

void _d_float_plus() {
    sp[0] += sizeof(double);
}

void _d_floats() {
    sp[0] *= sizeof(double);
}

void _f_star_star() {
    fp[1] = pow(fp[1], fp[0]);
    fp++;
}

void _f_dot() {
    printf("%.*f ", precision, (double) *fp++);
}

void _f_abs() {
    *fp = fabs(*fp);
}

void _f_a_cos() {
    *fp = acos(*fp);
}

void _f_a_cosh() {
#ifdef HAVE_ACOSH
	*fp = acosh(*fp);
#else
	*fp = log(*fp + sqrt(*fp * *fp - 1));
#endif
}

void _f_a_log() {
    *fp = pow(10, *fp);
}

void _f_a_sin() {
    *fp = asin(*fp);
}

void _f_a_sinh() {
#ifdef HAVE_ASINH
	*fp = asinh(*fp);
#else
	*fp = log(*fp + sqrt(*fp * *fp + 1));
#endif
}

void _f_a_tan() {
    *fp = atan(*fp);
}

void _f_a_tan2() {
	fp[1] = atan2(fp[1], fp[0]);
    fp++;
}

void _f_a_tanh() {
#ifdef HAVE_ATANH
	*fp = atanh(*fp);
#else
	*fp = 0.5 * log((1 + *fp) / (1 - *fp));
#endif
}

void _f_cos() {
    *fp = cos(*fp);
}

void _f_cosh() {
    *fp = cosh(*fp);
}

void _f_e_dot() {
    register Real r = *fp++;
    register int esp = 0;
    if (r != 0.0)
        while (r < 1.0 || r > 1000.0) {
            if (r < 1.0) {
                r *= 1000.0;
                esp -= 3;
            } else {
                r /= 1000.0;
                esp += 3;
            }
        }
    printf("%.*fE%d ", precision, (double) r, esp);
}

void _f_exp() {
    *fp = exp(*fp);
}

void _f_exp_m_one() {
    *fp = exp(*fp) - 1.0;
}

void _f_ln() {
    *fp = log(*fp);
}

void _f_ln_p_one() {
    *fp = log(*fp) + 1.0;
}

void _f_log() {
    *fp = log10(*fp);
}

void _f_s_dot() {
    printf("%.*e ", precision, (double) *fp++);
}

void _f_sin() {
    *fp = sin(*fp);
}

void _f_sin_cos() {
    fp--;
    fp[0] = cos(fp[1]);
    fp[1] = sin(fp[1]);
}

void _f_sinh() {
    *fp = sinh(*fp);
}

void _f_sqrt() {
    *fp = sqrt(*fp);
}

void _f_tan() {
    *fp = tan(*fp);
}

void _f_tanh() {
    *fp = tanh(*fp);
}

void _f_proximate() {
    register Real r3 = *fp++;
    register Real r2 = *fp++;
    register Real r1 = *fp++;
    if (r3 > 0.0) *--sp = FFLAG(fabs(r1 - r2) < r3);
    else if (r3 < 0.0) *--sp = FFLAG(fabs(r1 - r2) < (-r3) * (fabs(r1) + fabs(r2)));
    else *--sp = FFLAG(r1 == r2);
}

void _precision() {
    *--sp = precision;
}

void _set_precision() {
    precision = *sp++;
}

void _s_f_store() {
    register float *addr = (float *) *sp++;
    *addr = (float) *fp++;
}

void _s_f_fetch() {
    register float *addr = (float *) *sp++;
	*--fp = (Real) *addr;
}

void _s_float_plus() {
    sp[0] += sizeof(float);
}

void _s_floats() {
    sp[0] *= sizeof(float);
}