fp-test.c revision 50397 
1/* fp-test.c - Check that all floating-point operations are available.
2   Copyright (C) 1995 Free Software Foundation, Inc.
3   Contributed by Ronald F. Guilmette <rfg@monkeys.com>.
4
5This file is part of GNU CC.
6
7GNU CC is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2, or (at your option)
10any later version.
11
12GNU CC is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GNU CC; see the file COPYING.  If not, write to
19the Free Software Foundation, 59 Temple Place - Suite 330,
20Boston, MA 02111-1307, USA.  */
21
22/* This is a trivial test program which may be useful to people who are
23   porting the GCC or G++ compilers to a new system.  The intent here is
24   merely to check that all floating-point operations have been provided
25   by the port. (Note that I say ``provided'' rather than ``implemented''.)
26
27   To use this file, simply compile it (with GCC or G++) and then try to
28   link it in the normal way (also using GCC or G++ respectively).  If
29   all of the floating -point operations (including conversions) have
30   been provided, then this file will link without incident.  If however
31   one or more of the primitive floating-point operations have not been
32   properly provided, you will get link-time errors indicating which
33   floating-point operations are unavailable.
34
35   This file will typically be used when porting the GNU compilers to
36   some system which lacks floating-point hardware, and for which
37   software emulation routines (for FP ops) are needed in order to
38   complete the port.  */
39
40#if 0
41#include <math.h>
42#endif
43
44extern double acos (double);
45extern double asin (double);
46extern double atan (double);
47extern double atan2 (double, double);
48extern double cos (double);
49extern double sin (double);
50extern double tan (double);
51extern double cosh (double);
52extern double sinh (double);
53extern double tanh (double);
54extern double exp (double);
55extern double frexp (double, int *);
56extern double ldexp (double, int);
57extern double log (double);
58extern double log10 (double);
59extern double modf (double, double *);
60extern double pow (double, double);
61extern double sqrt (double);
62extern double ceil (double);
63extern double fabs (double);
64extern double floor (double);
65extern double fmod (double, double);
66
67int i1, i2 = 2;
68
69volatile signed char sc;
70volatile unsigned char uc;
71
72volatile signed short ss;
73volatile unsigned short us;
74
75volatile signed int si;
76volatile unsigned int ui;
77
78volatile signed long sl;
79volatile unsigned long ul;
80
81volatile float f1 = 1.0, f2 = 1.0, f3 = 1.0;
82volatile double d1 = 1.0, d2 = 1.0, d3 = 1.0;
83volatile long double D1 = 1.0, D2 = 1.0, D3 = 1.0;
84
85int
86main ()
87{
88  /* TYPE: float */
89
90  f1 = -f2;
91  f1 = f2 + f3;
92  f1 = f2 - f3;
93  f1 = f2 * f3;
94  f1 = f2 / f3;
95  f1 += f2;
96  f1 -= f2;
97  f1 *= f2;
98  f1 /= f2;
99
100  si = f1 == f2;
101  si = f1 != f2;
102  si = f1 > f2;
103  si = f1 < f2;
104  si = f1 >= f2;
105  si = f1 <= f2;
106
107  sc = f1;
108  uc = f1;
109  ss = f1;
110  us = f1;
111  si = f1;
112  ui = f1;
113  sl = f1;
114  ul = f1;
115  d1 = f1;
116  D1 = f1;
117
118  f1 = sc;
119  f1 = uc;
120  f1 = ss;
121  f1 = us;
122  f1 = si;
123  f1 = ui;
124  f1 = sl;
125  f1 = ul;
126  f1 = d1;
127  f1 = D1;
128
129  d1 = -d2;
130  d1 = d2 + d3;
131  d1 = d2 - d3;
132  d1 = d2 * d3;
133  d1 = d2 / d3;
134  d1 += d2;
135  d1 -= d2;
136  d1 *= d2;
137  d1 /= d2;
138
139  si = d1 == d2;
140  si = d1 != d2;
141  si = d1 > d2;
142  si = d1 < d2;
143  si = d1 >= d2;
144  si = d1 <= d2;
145
146  sc = d1;
147  uc = d1;
148  ss = d1;
149  us = d1;
150  si = d1;
151  ui = d1;
152  sl = d1;
153  ul = d1;
154  f1 = d1;
155  D1 = d1;
156
157  d1 = sc;
158  d1 = uc;
159  d1 = ss;
160  d1 = us;
161  d1 = si;
162  d1 = ui;
163  d1 = sl;
164  d1 = ul;
165  d1 = f1;
166  d1 = D1;
167
168  D1 = -D2;
169  D1 = D2 + D3;
170  D1 = D2 - D3;
171  D1 = D2 * D3;
172  D1 = D2 / D3;
173  D1 += D2;
174  D1 -= D2;
175  D1 *= D2;
176  D1 /= D2;
177
178  si = D1 == D2;
179  si = D1 != D2;
180  si = D1 > D2;
181  si = D1 < D2;
182  si = D1 >= D2;
183  si = D1 <= D2;
184
185  sc = D1;
186  uc = D1;
187  ss = D1;
188  us = D1;
189  si = D1;
190  ui = D1;
191  sl = D1;
192  ul = D1;
193  f1 = D1;
194  d1 = D1;
195
196  D1 = sc;
197  D1 = uc;
198  D1 = ss;
199  D1 = us;
200  D1 = si;
201  D1 = ui;
202  D1 = sl;
203  D1 = ul;
204  D1 = f1;
205  D1 = d1;
206
207  d1 = acos (d2);
208  d1 = asin (d2);
209  d1 = atan (d2);
210  d1 = atan2 (d2, d3);
211  d1 = cos (d2);
212  d1 = sin (d2);
213  d1 = tan (d2);
214  d1 = cosh (d2);
215  d1 = sinh (d2);
216  d1 = tanh (d2);
217  d1 = exp (d2);
218  d1 = frexp (d2, &i1);
219  d1 = ldexp (d2, i2);
220  d1 = log (d2);
221  d1 = log10 (d2);
222  d1 = modf (d2, &d3);
223  d1 = pow (d2, d3);
224  d1 = sqrt (d2);
225  d1 = ceil (d2);
226  d1 = fabs (d2);
227  d1 = floor (d2);
228  d1 = fmod (d2, d3);
229
230  return 0;
231}
232