1 /* This file tests shifts in various integral modes. */
2
3 #include <limits.h>
4
5 #define CAT(A, B) A ## B
6
7 #define REPEAT_8 \
8 REPEAT_FN ( 0) \
9 REPEAT_FN ( 1) \
10 REPEAT_FN ( 2) \
11 REPEAT_FN ( 3) \
12 REPEAT_FN ( 4) \
13 REPEAT_FN ( 5) \
14 REPEAT_FN ( 6) \
15 REPEAT_FN ( 7)
16
17 #define REPEAT_16 \
18 REPEAT_8 \
19 REPEAT_FN ( 8) \
20 REPEAT_FN ( 9) \
21 REPEAT_FN (10) \
22 REPEAT_FN (11) \
23 REPEAT_FN (12) \
24 REPEAT_FN (13) \
25 REPEAT_FN (14) \
26 REPEAT_FN (15)
27
28 #define REPEAT_32 \
29 REPEAT_16 \
30 REPEAT_FN (16) \
31 REPEAT_FN (17) \
32 REPEAT_FN (18) \
33 REPEAT_FN (19) \
34 REPEAT_FN (20) \
35 REPEAT_FN (21) \
36 REPEAT_FN (22) \
37 REPEAT_FN (23) \
38 REPEAT_FN (24) \
39 REPEAT_FN (25) \
40 REPEAT_FN (26) \
41 REPEAT_FN (27) \
42 REPEAT_FN (28) \
43 REPEAT_FN (29) \
44 REPEAT_FN (30) \
45 REPEAT_FN (31)
46
47 /* Define 8-bit shifts. */
48 #if CHAR_BIT == 8
49 typedef unsigned int u8 __attribute__((mode(QI)));
50 typedef signed int s8 __attribute__((mode(QI)));
51
52 #define REPEAT_FN(COUNT) \
53 u8 CAT (ashift_qi_, COUNT) (u8 n) { return n << COUNT; }
54 REPEAT_8
55 #undef REPEAT_FN
56
57 #define REPEAT_FN(COUNT) \
58 u8 CAT (lshiftrt_qi_, COUNT) (u8 n) { return n >> COUNT; }
59 REPEAT_8
60 #undef REPEAT_FN
61
62 #define REPEAT_FN(COUNT) \
63 s8 CAT (ashiftrt_qi_, COUNT) (s8 n) { return n >> COUNT; }
64 REPEAT_8
65 #undef REPEAT_FN
66 #endif /* CHAR_BIT == 8 */
67
68 /* Define 16-bit shifts. */
69 #if CHAR_BIT == 8 || CHAR_BIT == 16
70 #if CHAR_BIT == 8
71 typedef unsigned int u16 __attribute__((mode(HI)));
72 typedef signed int s16 __attribute__((mode(HI)));
73 #elif CHAR_BIT == 16
74 typedef unsigned int u16 __attribute__((mode(QI)));
75 typedef signed int s16 __attribute__((mode(QI)));
76 #endif
77
78 #define REPEAT_FN(COUNT) \
79 u16 CAT (ashift_hi_, COUNT) (u16 n) { return n << COUNT; }
80 REPEAT_16
81 #undef REPEAT_FN
82
83 #define REPEAT_FN(COUNT) \
84 u16 CAT (lshiftrt_hi_, COUNT) (u16 n) { return n >> COUNT; }
85 REPEAT_16
86 #undef REPEAT_FN
87
88 #define REPEAT_FN(COUNT) \
89 s16 CAT (ashiftrt_hi_, COUNT) (s16 n) { return n >> COUNT; }
90 REPEAT_16
91 #undef REPEAT_FN
92 #endif /* CHAR_BIT == 8 || CHAR_BIT == 16 */
93
94 /* Define 32-bit shifts. */
95 #if CHAR_BIT == 8 || CHAR_BIT == 16 || CHAR_BIT == 32
96 #if CHAR_BIT == 8
97 typedef unsigned int u32 __attribute__((mode(SI)));
98 typedef signed int s32 __attribute__((mode(SI)));
99 #elif CHAR_BIT == 16
100 typedef unsigned int u32 __attribute__((mode(HI)));
101 typedef signed int s32 __attribute__((mode(HI)));
102 #elif CHAR_BIT == 32
103 typedef unsigned int u32 __attribute__((mode(QI)));
104 typedef signed int s32 __attribute__((mode(QI)));
105 #endif
106
107 #define REPEAT_FN(COUNT) \
108 u32 CAT (ashift_si_, COUNT) (u32 n) { return n << COUNT; }
109 REPEAT_32
110 #undef REPEAT_FN
111
112 #define REPEAT_FN(COUNT) \
113 u32 CAT (lshiftrt_si_, COUNT) (u32 n) { return n >> COUNT; }
114 REPEAT_32
115 #undef REPEAT_FN
116
117 #define REPEAT_FN(COUNT) \
118 s32 CAT (ashiftrt_si_, COUNT) (s32 n) { return n >> COUNT; }
119 REPEAT_32
120 #undef REPEAT_FN
121 #endif /* CHAR_BIT == 8 || CHAR_BIT == 16 || CHAR_BIT == 32 */
122
123 extern void abort (void);
124 extern void exit (int);
125
126 int
main()127 main ()
128 {
129 /* Test 8-bit shifts. */
130 #if CHAR_BIT == 8
131 # define REPEAT_FN(COUNT) \
132 if (CAT (ashift_qi_, COUNT) (0xff) != (u8) ((u8)0xff << COUNT)) abort ();
133 REPEAT_8;
134 # undef REPEAT_FN
135
136 # define REPEAT_FN(COUNT) \
137 if (CAT (lshiftrt_qi_, COUNT) (0xff) != (u8) ((u8)0xff >> COUNT)) abort ();
138 REPEAT_8;
139 # undef REPEAT_FN
140
141 # define REPEAT_FN(COUNT) \
142 if (CAT (ashiftrt_qi_, COUNT) (-1) != -1) abort ();
143 REPEAT_8;
144 # undef REPEAT_FN
145
146 # define REPEAT_FN(COUNT) \
147 if (CAT (ashiftrt_qi_, COUNT) (0) != 0) abort ();
148 REPEAT_8;
149 # undef REPEAT_FN
150 #endif /* CHAR_BIT == 8 */
151
152 /* Test 16-bit shifts. */
153 #if CHAR_BIT == 8 || CHAR_BIT == 16
154 # define REPEAT_FN(COUNT) \
155 if (CAT (ashift_hi_, COUNT) (0xffff) \
156 != (u16) ((u16) 0xffff << COUNT)) abort ();
157 REPEAT_16;
158 # undef REPEAT_FN
159
160 # define REPEAT_FN(COUNT) \
161 if (CAT (lshiftrt_hi_, COUNT) (0xffff) \
162 != (u16) ((u16) 0xffff >> COUNT)) abort ();
163 REPEAT_16;
164 # undef REPEAT_FN
165
166 # define REPEAT_FN(COUNT) \
167 if (CAT (ashiftrt_hi_, COUNT) (-1) != -1) abort ();
168 REPEAT_16;
169 # undef REPEAT_FN
170
171 # define REPEAT_FN(COUNT) \
172 if (CAT (ashiftrt_hi_, COUNT) (0) != 0) abort ();
173 REPEAT_16;
174 # undef REPEAT_FN
175 #endif /* CHAR_BIT == 8 || CHAR_BIT == 16 */
176
177 /* Test 32-bit shifts. */
178 #if CHAR_BIT == 8 || CHAR_BIT == 16 || CHAR_BIT == 32
179 # define REPEAT_FN(COUNT) \
180 if (CAT (ashift_si_, COUNT) (0xffffffff) \
181 != (u32) ((u32) 0xffffffff << COUNT)) abort ();
182 REPEAT_32;
183 # undef REPEAT_FN
184
185 # define REPEAT_FN(COUNT) \
186 if (CAT (lshiftrt_si_, COUNT) (0xffffffff) \
187 != (u32) ((u32) 0xffffffff >> COUNT)) abort ();
188 REPEAT_32;
189 # undef REPEAT_FN
190
191 # define REPEAT_FN(COUNT) \
192 if (CAT (ashiftrt_si_, COUNT) (-1) != -1) abort ();
193 REPEAT_32;
194 # undef REPEAT_FN
195
196 # define REPEAT_FN(COUNT) \
197 if (CAT (ashiftrt_si_, COUNT) (0) != 0) abort ();
198 REPEAT_32;
199 # undef REPEAT_FN
200 #endif /* CHAR_BIT == 8 || CHAR_BIT == 16 || CHAR_BIT == 32 */
201
202 exit (0);
203 }
204