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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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1 /* fp-test.c - Check that all floating-point operations are available.
2 Copyright (C) 1995, 2000, 2003, 2007 Free Software Foundation, Inc.
3 Contributed by Ronald F. Guilmette <rfg@monkeys.com>.
4
5 This file is part of GCC.
6
7 GCC is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
10 any later version.
11
12 GCC is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
20
21 /* This is a trivial test program which may be useful to people who are
22 porting the GCC or G++ compilers to a new system. The intent here is
23 merely to check that all floating-point operations have been provided
24 by the port. (Note that I say ``provided'' rather than ``implemented''.)
25
26 To use this file, simply compile it (with GCC or G++) and then try to
27 link it in the normal way (also using GCC or G++ respectively). If
28 all of the floating -point operations (including conversions) have
29 been provided, then this file will link without incident. If however
30 one or more of the primitive floating-point operations have not been
31 properly provided, you will get link-time errors indicating which
32 floating-point operations are unavailable.
33
34 This file will typically be used when porting the GNU compilers to
35 some system which lacks floating-point hardware, and for which
36 software emulation routines (for FP ops) are needed in order to
37 complete the port. */
38
39 #if 0
40 #include <math.h>
41 #endif
42
43 extern double acos (double);
44 extern double asin (double);
45 extern double atan (double);
46 extern double atan2 (double, double);
47 extern double cos (double);
48 extern double sin (double);
49 extern double tan (double);
50 extern double cosh (double);
51 extern double sinh (double);
52 extern double tanh (double);
53 extern double exp (double);
54 extern double frexp (double, int *);
55 extern double ldexp (double, int);
56 extern double log (double);
57 extern double log10 (double);
58 extern double modf (double, double *);
59 extern double pow (double, double);
60 extern double sqrt (double);
61 extern double ceil (double);
62 extern double fabs (double);
63 extern double floor (double);
64 extern double fmod (double, double);
65
66 int i1, i2 = 2;
67
68 volatile signed char sc;
69 volatile unsigned char uc;
70
71 volatile signed short ss;
72 volatile unsigned short us;
73
74 volatile signed int si;
75 volatile unsigned int ui;
76
77 volatile signed long sl;
78 volatile unsigned long ul;
79
80 volatile float f1 = 1.0, f2 = 1.0, f3 = 1.0;
81 volatile double d1 = 1.0, d2 = 1.0, d3 = 1.0;
82 volatile long double D1 = 1.0, D2 = 1.0, D3 = 1.0;
83
84 int
85 main (void)
86 {
87 /* TYPE: float */
88
89 f1 = -f2;
90 f1 = f2 + f3;
91 f1 = f2 - f3;
92 f1 = f2 * f3;
93 f1 = f2 / f3;
94 f1 += f2;
95 f1 -= f2;
96 f1 *= f2;
97 f1 /= f2;
98
99 si = f1 == f2;
100 si = f1 != f2;
101 si = f1 > f2;
102 si = f1 < f2;
103 si = f1 >= f2;
104 si = f1 <= f2;
105
106 si = __builtin_isgreater (f1, f2);
107 si = __builtin_isgreaterequal (f1, f2);
108 si = __builtin_isless (f1, f2);
109 si = __builtin_islessequal (f1, f2);
110 si = __builtin_islessgreater (f1, f2);
111 si = __builtin_isunordered (f1, f2);
112
113 sc = f1;
114 uc = f1;
115 ss = f1;
116 us = f1;
117 si = f1;
118 ui = f1;
119 sl = f1;
120 ul = f1;
121 d1 = f1;
122 D1 = f1;
123
124 f1 = sc;
125 f1 = uc;
126 f1 = ss;
127 f1 = us;
128 f1 = si;
129 f1 = ui;
130 f1 = sl;
131 f1 = ul;
132 f1 = d1;
133 f1 = D1;
134
135 d1 = -d2;
136 d1 = d2 + d3;
137 d1 = d2 - d3;
138 d1 = d2 * d3;
139 d1 = d2 / d3;
140 d1 += d2;
141 d1 -= d2;
142 d1 *= d2;
143 d1 /= d2;
144
145 si = d1 == d2;
146 si = d1 != d2;
147 si = d1 > d2;
148 si = d1 < d2;
149 si = d1 >= d2;
150 si = d1 <= d2;
151
152 si = __builtin_isgreater (d1, d2);
153 si = __builtin_isgreaterequal (d1, d2);
154 si = __builtin_isless (d1, d2);
155 si = __builtin_islessequal (d1, d2);
156 si = __builtin_islessgreater (d1, d2);
157 si = __builtin_isunordered (d1, d2);
158
159 sc = d1;
160 uc = d1;
161 ss = d1;
162 us = d1;
163 si = d1;
164 ui = d1;
165 sl = d1;
166 ul = d1;
167 f1 = d1;
168 D1 = d1;
169
170 d1 = sc;
171 d1 = uc;
172 d1 = ss;
173 d1 = us;
174 d1 = si;
175 d1 = ui;
176 d1 = sl;
177 d1 = ul;
178 d1 = f1;
179 d1 = D1;
180
181 D1 = -D2;
182 D1 = D2 + D3;
183 D1 = D2 - D3;
184 D1 = D2 * D3;
185 D1 = D2 / D3;
186 D1 += D2;
187 D1 -= D2;
188 D1 *= D2;
189 D1 /= D2;
190
191 si = D1 == D2;
192 si = D1 != D2;
193 si = D1 > D2;
194 si = D1 < D2;
195 si = D1 >= D2;
196 si = D1 <= D2;
197
198 si = __builtin_isgreater (D1, D2);
199 si = __builtin_isgreaterequal (D1, D2);
200 si = __builtin_isless (D1, D2);
201 si = __builtin_islessequal (D1, D2);
202 si = __builtin_islessgreater (D1, D2);
203 si = __builtin_isunordered (D1, D2);
204
205 sc = D1;
206 uc = D1;
207 ss = D1;
208 us = D1;
209 si = D1;
210 ui = D1;
211 sl = D1;
212 ul = D1;
213 f1 = D1;
214 d1 = D1;
215
216 D1 = sc;
217 D1 = uc;
218 D1 = ss;
219 D1 = us;
220 D1 = si;
221 D1 = ui;
222 D1 = sl;
223 D1 = ul;
224 D1 = f1;
225 D1 = d1;
226
227 d1 = acos (d2);
228 d1 = asin (d2);
229 d1 = atan (d2);
230 d1 = atan2 (d2, d3);
231 d1 = cos (d2);
232 d1 = sin (d2);
233 d1 = tan (d2);
234 d1 = cosh (d2);
235 d1 = sinh (d2);
236 d1 = tanh (d2);
237 d1 = exp (d2);
238 d1 = frexp (d2, &i1);
239 d1 = ldexp (d2, i2);
240 d1 = log (d2);
241 d1 = log10 (d2);
242 d1 = modf (d2, &d3);
243 d1 = pow (d2, d3);
244 d1 = sqrt (d2);
245 d1 = ceil (d2);
246 d1 = fabs (d2);
247 d1 = floor (d2);
248 d1 = fmod (d2, d3);
249
250 return 0;
251 }