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1 // Test without serialization:
2 // RUN: %clang_cc1 -x c -ffixed-point -ast-dump %s | FileCheck %s --strict-whitespace
3 //
4 // Test with serialization:
5 // RUN: %clang_cc1 -ffixed-point -emit-pch -o %t %s
6 // RUN: %clang_cc1 -x c -ffixed-point -include-pch %t -ast-dump-all /dev/null \
7 // RUN: | sed -e "s/ <undeserialized declarations>//" -e "s/ imported//" \
8 // RUN: | FileCheck %s --strict-whitespace
9 
10 /*  Various contexts where type _Accum can appear. */
11 
12 // Primary fixed point types
13 signed short _Accum s_short_accum;
14 signed _Accum s_accum;
15 signed long _Accum s_long_accum;
16 unsigned short _Accum u_short_accum;
17 unsigned _Accum u_accum;
18 unsigned long _Accum u_long_accum;
19 signed short _Fract s_short_fract;
20 signed _Fract s_fract;
21 signed long _Fract s_long_fract;
22 unsigned short _Fract u_short_fract;
23 unsigned _Fract u_fract;
24 unsigned long _Fract u_long_fract;
25 
26 // Aliased fixed point types
27 short _Accum short_accum;
28 _Accum accum;
29 long _Accum long_accum;
30 short _Fract short_fract;
31 _Fract fract;
32 long _Fract long_fract;
33 
34 // Saturated fixed point types
35 _Sat signed short _Accum sat_s_short_accum;
36 _Sat signed _Accum sat_s_accum;
37 _Sat signed long _Accum sat_s_long_accum;
38 _Sat unsigned short _Accum sat_u_short_accum;
39 _Sat unsigned _Accum sat_u_accum;
40 _Sat unsigned long _Accum sat_u_long_accum;
41 _Sat signed short _Fract sat_s_short_fract;
42 _Sat signed _Fract sat_s_fract;
43 _Sat signed long _Fract sat_s_long_fract;
44 _Sat unsigned short _Fract sat_u_short_fract;
45 _Sat unsigned _Fract sat_u_fract;
46 _Sat unsigned long _Fract sat_u_long_fract;
47 
48 // Aliased saturated fixed point types
49 _Sat short _Accum sat_short_accum;
50 _Sat _Accum sat_accum;
51 _Sat long _Accum sat_long_accum;
52 _Sat short _Fract sat_short_fract;
53 _Sat _Fract sat_fract;
54 _Sat long _Fract sat_long_fract;
55 
56 //CHECK:      |-VarDecl {{.*}} s_short_accum 'short _Accum'
57 //CHECK-NEXT: |-VarDecl {{.*}} s_accum '_Accum'
58 //CHECK-NEXT: |-VarDecl {{.*}} s_long_accum 'long _Accum'
59 //CHECK-NEXT: |-VarDecl {{.*}} u_short_accum 'unsigned short _Accum'
60 //CHECK-NEXT: |-VarDecl {{.*}} u_accum 'unsigned _Accum'
61 //CHECK-NEXT: |-VarDecl {{.*}} u_long_accum 'unsigned long _Accum'
62 //CHECK-NEXT: |-VarDecl {{.*}} s_short_fract 'short _Fract'
63 //CHECK-NEXT: |-VarDecl {{.*}} s_fract '_Fract'
64 //CHECK-NEXT: |-VarDecl {{.*}} s_long_fract 'long _Fract'
65 //CHECK-NEXT: |-VarDecl {{.*}} u_short_fract 'unsigned short _Fract'
66 //CHECK-NEXT: |-VarDecl {{.*}} u_fract 'unsigned _Fract'
67 //CHECK-NEXT: |-VarDecl {{.*}} u_long_fract 'unsigned long _Fract'
68 //CHECK-NEXT: |-VarDecl {{.*}} short_accum 'short _Accum'
69 //CHECK-NEXT: |-VarDecl {{.*}} accum '_Accum'
70 //CHECK-NEXT: |-VarDecl {{.*}} long_accum 'long _Accum'
71 //CHECK-NEXT: |-VarDecl {{.*}} short_fract 'short _Fract'
72 //CHECK-NEXT: |-VarDecl {{.*}} fract '_Fract'
73 //CHECK-NEXT: |-VarDecl {{.*}} long_fract 'long _Fract'
74 //CHECK-NEXT: |-VarDecl {{.*}} sat_s_short_accum '_Sat short _Accum'
75 //CHECK-NEXT: |-VarDecl {{.*}} sat_s_accum '_Sat _Accum'
76 //CHECK-NEXT: |-VarDecl {{.*}} sat_s_long_accum '_Sat long _Accum'
77 //CHECK-NEXT: |-VarDecl {{.*}} sat_u_short_accum '_Sat unsigned short _Accum'
78 //CHECK-NEXT: |-VarDecl {{.*}} sat_u_accum '_Sat unsigned _Accum'
79 //CHECK-NEXT: |-VarDecl {{.*}} sat_u_long_accum '_Sat unsigned long _Accum'
80 //CHECK-NEXT: |-VarDecl {{.*}} sat_s_short_fract '_Sat short _Fract'
81 //CHECK-NEXT: |-VarDecl {{.*}} sat_s_fract '_Sat _Fract'
82 //CHECK-NEXT: |-VarDecl {{.*}} sat_s_long_fract '_Sat long _Fract'
83 //CHECK-NEXT: |-VarDecl {{.*}} sat_u_short_fract '_Sat unsigned short _Fract'
84 //CHECK-NEXT: |-VarDecl {{.*}} sat_u_fract '_Sat unsigned _Fract'
85 //CHECK-NEXT: |-VarDecl {{.*}} sat_u_long_fract '_Sat unsigned long _Fract'
86 //CHECK-NEXT: |-VarDecl {{.*}} sat_short_accum '_Sat short _Accum'
87 //CHECK-NEXT: |-VarDecl {{.*}} sat_accum '_Sat _Accum'
88 //CHECK-NEXT: |-VarDecl {{.*}} sat_long_accum '_Sat long _Accum'
89 //CHECK-NEXT: |-VarDecl {{.*}} sat_short_fract '_Sat short _Fract'
90 //CHECK-NEXT: |-VarDecl {{.*}} sat_fract '_Sat _Fract'
91 //CHECK-NEXT: |-VarDecl {{.*}} sat_long_fract '_Sat long _Fract'
92 
93 #define MIX_TYPE_SPEC(SPEC, SIGN, SIZE, ID) \
94   SPEC SIGN SIZE _Accum ID; \
95   SIGN SPEC SIZE _Accum ID ## 2; \
96   SIGN SIZE SPEC _Accum ID ## 3; \
97   SIGN SIZE _Accum SPEC ID ## 4;
98 
99 /* Mixing fixed point types with other type specifiers */
100 
101 #define MIX_VOLATILE(SIGN, SIZE, ID) MIX_TYPE_SPEC(volatile, SIGN, SIZE, ID)
102 #define MIX_ATOMIC(SIGN, SIZE, ID) MIX_TYPE_SPEC(_Atomic, SIGN, SIZE, ID)
103 #define MIX_CONST(SIGN, SIZE, ID) MIX_TYPE_SPEC(const, SIGN, SIZE, ID)
104 
105 MIX_VOLATILE(signed, short, vol_s_short_accum)
106 MIX_ATOMIC(signed, short, atm_s_short_accum)
107 MIX_CONST(signed, short, const_s_short_accum)
108 
109 // CHECK-NEXT: |-VarDecl {{.*}} vol_s_short_accum 'volatile short _Accum'
110 // CHECK-NEXT: |-VarDecl {{.*}} vol_s_short_accum2 'volatile short _Accum'
111 // CHECK-NEXT: |-VarDecl {{.*}} vol_s_short_accum3 'volatile short _Accum'
112 // CHECK-NEXT: |-VarDecl {{.*}} vol_s_short_accum4 'volatile short _Accum'
113 
114 // CHECK-NEXT: |-VarDecl {{.*}} atm_s_short_accum '_Atomic(short _Accum)'
115 // CHECK-NEXT: |-VarDecl {{.*}} atm_s_short_accum2 '_Atomic(short _Accum)'
116 // CHECK-NEXT: |-VarDecl {{.*}} atm_s_short_accum3 '_Atomic(short _Accum)'
117 // CHECK-NEXT: |-VarDecl {{.*}} atm_s_short_accum4 '_Atomic(short _Accum)'
118 
119 // CHECK-NEXT: |-VarDecl {{.*}} const_s_short_accum 'const short _Accum'
120 // CHECK-NEXT: |-VarDecl {{.*}} const_s_short_accum2 'const short _Accum'
121 // CHECK-NEXT: |-VarDecl {{.*}} const_s_short_accum3 'const short _Accum'
122 // CHECK-NEXT: |-VarDecl {{.*}} const_s_short_accum4 'const short _Accum'
123 
124 /* Typedefs */
125 
126 // Primary fixed point types
127 typedef signed short   _Accum SsA_t;
128 typedef signed         _Accum SA_t;
129 typedef signed long    _Accum SlA_t;
130 typedef unsigned short _Accum UsA_t;
131 typedef unsigned       _Accum UA_t;
132 typedef unsigned long  _Accum UlA_t;
133 typedef signed short   _Fract SsF_t;
134 typedef signed         _Fract SF_t;
135 typedef signed long    _Fract SlF_t;
136 typedef unsigned short _Fract UsF_t;
137 typedef unsigned       _Fract UF_t;
138 typedef unsigned long  _Fract UlF_t;
139 
140 // Aliased fixed point types
141 typedef short _Accum sA_t;
142 typedef       _Accum A_t;
143 typedef long  _Accum lA_t;
144 typedef short _Fract sF_t;
145 typedef       _Fract F_t;
146 typedef long  _Fract lF_t;
147 
148 // Saturated fixed point types
149 typedef _Sat signed short   _Accum SatSsA_t;
150 typedef _Sat signed         _Accum SatSA_t;
151 typedef _Sat signed long    _Accum SatSlA_t;
152 typedef _Sat unsigned short _Accum SatUsA_t;
153 typedef _Sat unsigned       _Accum SatUA_t;
154 typedef _Sat unsigned long  _Accum SatUlA_t;
155 typedef _Sat signed short   _Fract SatSsF_t;
156 typedef _Sat signed         _Fract SatSF_t;
157 typedef _Sat signed long    _Fract SatSlF_t;
158 typedef _Sat unsigned short _Fract SatUsF_t;
159 typedef _Sat unsigned       _Fract SatUF_t;
160 typedef _Sat unsigned long  _Fract SatUlF_t;
161 
162 // Aliased saturated fixed point types
163 typedef _Sat short   _Accum SatsA_t;
164 typedef _Sat         _Accum SatA_t;
165 typedef _Sat long    _Accum SatlA_t;
166 typedef _Sat short   _Fract SatsF_t;
167 typedef _Sat         _Fract SatF_t;
168 typedef _Sat long    _Fract SatlF_t;
169 
170 SsA_t     SsA_type;
171 SA_t      SA_type;
172 SlA_t     SlA_type;
173 UsA_t     UsA_type;
174 UA_t      UA_type;
175 UlA_t     UlA_type;
176 SsF_t     SsF_type;
177 SF_t      SF_type;
178 SlF_t     SlF_type;
179 UsF_t     UsF_type;
180 UF_t      UF_type;
181 UlF_t     UlF_type;
182 
183 sA_t      sA_type;
184 A_t       A_type;
185 lA_t      lA_type;
186 sF_t      sF_type;
187 F_t       F_type;
188 lF_t      lF_type;
189 
190 SatSsA_t  SatSsA_type;
191 SatSA_t   SatSA_type;
192 SatSlA_t  SatSlA_type;
193 SatUsA_t  SatUsA_type;
194 SatUA_t   SatUA_type;
195 SatUlA_t  SatUlA_type;
196 SatSsF_t  SatSsF_type;
197 SatSF_t   SatSF_type;
198 SatSlF_t  SatSlF_type;
199 SatUsF_t  SatUsF_type;
200 SatUF_t   SatUF_type;
201 SatUlF_t  SatUlF_type;
202 
203 SatsA_t   SatsA_type;
204 SatA_t    SatA_type;
205 SatlA_t   SatlA_type;
206 SatsF_t   SatsF_type;
207 SatF_t    SatF_type;
208 SatlF_t   SatlF_type;
209 
210 //CHECK:      |-VarDecl {{.*}} SsA_type 'SsA_t':'short _Accum'
211 //CHECK-NEXT: |-VarDecl {{.*}} SA_type 'SA_t':'_Accum'
212 //CHECK-NEXT: |-VarDecl {{.*}} SlA_type 'SlA_t':'long _Accum'
213 //CHECK-NEXT: |-VarDecl {{.*}} UsA_type 'UsA_t':'unsigned short _Accum'
214 //CHECK-NEXT: |-VarDecl {{.*}} UA_type 'UA_t':'unsigned _Accum'
215 //CHECK-NEXT: |-VarDecl {{.*}} UlA_type 'UlA_t':'unsigned long _Accum'
216 //CHECK-NEXT: |-VarDecl {{.*}} SsF_type 'SsF_t':'short _Fract'
217 //CHECK-NEXT: |-VarDecl {{.*}} SF_type 'SF_t':'_Fract'
218 //CHECK-NEXT: |-VarDecl {{.*}} SlF_type 'SlF_t':'long _Fract'
219 //CHECK-NEXT: |-VarDecl {{.*}} UsF_type 'UsF_t':'unsigned short _Fract'
220 //CHECK-NEXT: |-VarDecl {{.*}} UF_type 'UF_t':'unsigned _Fract'
221 //CHECK-NEXT: |-VarDecl {{.*}} UlF_type 'UlF_t':'unsigned long _Fract'
222 //CHECK-NEXT: |-VarDecl {{.*}} sA_type 'sA_t':'short _Accum'
223 //CHECK-NEXT: |-VarDecl {{.*}} A_type 'A_t':'_Accum'
224 //CHECK-NEXT: |-VarDecl {{.*}} lA_type 'lA_t':'long _Accum'
225 //CHECK-NEXT: |-VarDecl {{.*}} sF_type 'sF_t':'short _Fract'
226 //CHECK-NEXT: |-VarDecl {{.*}} F_type 'F_t':'_Fract'
227 //CHECK-NEXT: |-VarDecl {{.*}} lF_type 'lF_t':'long _Fract'
228 
229 //CHECK-NEXT: |-VarDecl {{.*}} SatSsA_type 'SatSsA_t':'_Sat short _Accum'
230 //CHECK-NEXT: |-VarDecl {{.*}} SatSA_type 'SatSA_t':'_Sat _Accum'
231 //CHECK-NEXT: |-VarDecl {{.*}} SatSlA_type 'SatSlA_t':'_Sat long _Accum'
232 //CHECK-NEXT: |-VarDecl {{.*}} SatUsA_type 'SatUsA_t':'_Sat unsigned short _Accum'
233 //CHECK-NEXT: |-VarDecl {{.*}} SatUA_type 'SatUA_t':'_Sat unsigned _Accum'
234 //CHECK-NEXT: |-VarDecl {{.*}} SatUlA_type 'SatUlA_t':'_Sat unsigned long _Accum'
235 //CHECK-NEXT: |-VarDecl {{.*}} SatSsF_type 'SatSsF_t':'_Sat short _Fract'
236 //CHECK-NEXT: |-VarDecl {{.*}} SatSF_type 'SatSF_t':'_Sat _Fract'
237 //CHECK-NEXT: |-VarDecl {{.*}} SatSlF_type 'SatSlF_t':'_Sat long _Fract'
238 //CHECK-NEXT: |-VarDecl {{.*}} SatUsF_type 'SatUsF_t':'_Sat unsigned short _Fract'
239 //CHECK-NEXT: |-VarDecl {{.*}} SatUF_type 'SatUF_t':'_Sat unsigned _Fract'
240 //CHECK-NEXT: |-VarDecl {{.*}} SatUlF_type 'SatUlF_t':'_Sat unsigned long _Fract'
241 //CHECK-NEXT: |-VarDecl {{.*}} SatsA_type 'SatsA_t':'_Sat short _Accum'
242 //CHECK-NEXT: |-VarDecl {{.*}} SatA_type 'SatA_t':'_Sat _Accum'
243 //CHECK-NEXT: |-VarDecl {{.*}} SatlA_type 'SatlA_t':'_Sat long _Accum'
244 //CHECK-NEXT: |-VarDecl {{.*}} SatsF_type 'SatsF_t':'_Sat short _Fract'
245 //CHECK-NEXT: |-VarDecl {{.*}} SatF_type 'SatF_t':'_Sat _Fract'
246 //CHECK-NEXT: |-VarDecl {{.*}} SatlF_type 'SatlF_t':'_Sat long _Fract'
247 
248 // Fixed point literal exponent syntax
249 _Accum decexp1 = 1.575e1k;
250 _Accum decexp2 = 1.575E1k;
251 _Accum decexp3 = 1575e-2k;
252 _Accum decexp4 = 1575E-2k;
253 
254 _Accum hexexp1 = 0x0.3p10k;
255 _Accum hexexp2 = 0x0.3P10k;
256 _Accum hexexp3 = 0x30000p-10k;
257 _Accum hexexp4 = 0x30000P-10k;
258 
259 _Accum zeroexp1 = 1e0k;
260 _Accum zeroexp2 = 1e-0k;
261 
262 //CHECK-NEXT: |-VarDecl {{.*}} decexp1 '_Accum' cinit
263 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 15.75
264 //CHECK-NEXT: |-VarDecl {{.*}} decexp2 '_Accum' cinit
265 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 15.75
266 //CHECK-NEXT: |-VarDecl {{.*}} decexp3 '_Accum' cinit
267 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 15.75
268 //CHECK-NEXT: |-VarDecl {{.*}} decexp4 '_Accum' cinit
269 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 15.75
270 
271 //CHECK-NEXT: |-VarDecl {{.*}} hexexp1 '_Accum' cinit
272 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 192.0
273 //CHECK-NEXT: |-VarDecl {{.*}} hexexp2 '_Accum' cinit
274 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 192.0
275 //CHECK-NEXT: |-VarDecl {{.*}} hexexp3 '_Accum' cinit
276 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 192.0
277 //CHECK-NEXT: |-VarDecl {{.*}} hexexp4 '_Accum' cinit
278 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 192.0
279 
280 //CHECK-NEXT: |-VarDecl {{.*}} zeroexp1 '_Accum' cinit
281 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 1.0
282 //CHECK-NEXT: |-VarDecl {{.*}} zeroexp2 '_Accum' cinit
283 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 1.0
284 
285 // Fixed point literal values
286 _Accum literal1 = 2.5k;       // Precise decimal
287 _Accum literal2 = 0.0k;       // Zero
288 _Accum literal3 = 1.1k;       // Imprecise decimal
289 _Accum literal4 = 1.11k;
290 _Accum literal5 = 1.111k;
291 _Accum literal6 = 1.1111k;
292 _Accum literal7 = 1.11111k;   // After some point after the radix, adding any more
293                               // digits to the literal will not result in any
294                               // further precision since the nth digit added may
295                               // be less than the precision that can be
296                               // represented by the fractional bits of the type.
297                               // This results in the same value being stored for
298                               // the type.
299 
300 //CHECK-NEXT: |-VarDecl {{.*}} literal1 '_Accum' cinit
301 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 2.5
302 //CHECK-NEXT: |-VarDecl {{.*}} literal2 '_Accum' cinit
303 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 0.0
304 //CHECK-NEXT: |-VarDecl {{.*}} literal3 '_Accum' cinit
305 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 1.0999755859375
306 //CHECK-NEXT: |-VarDecl {{.*}} literal4 '_Accum' cinit
307 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 1.1099853515625
308 //CHECK-NEXT: |-VarDecl {{.*}} literal5 '_Accum' cinit
309 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 1.110992431640625
310 //CHECK-NEXT: |-VarDecl {{.*}} literal6 '_Accum' cinit
311 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 1.111083984375
312 //CHECK-NEXT: |-VarDecl {{.*}} literal7 '_Accum' cinit
313 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 1.111083984375
314 
315 long _Accum longaccumliteral     = 0.99999999lk;
316 long _Accum longaccumliteral2    = 0.999999999lk;
317 long _Accum verylongaccumliteral = 0.99999999999999999999999999lk;
318 long _Fract longfractliteral     = 0.99999999lr;
319 long _Fract longfractliteral2    = 0.999999999lr;
320 long _Fract verylongfractliteral = 0.99999999999999999999999999lr;
321 
322 //CHECK-NEXT: |-VarDecl {{.*}} longaccumliteral 'long _Accum' cinit
323 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'long _Accum' 0.999999989755451679229736328125
324 //CHECK-NEXT: |-VarDecl {{.*}} longaccumliteral2 'long _Accum' cinit
325 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'long _Accum' 0.9999999986030161380767822265625
326 //CHECK-NEXT: |-VarDecl {{.*}} verylongaccumliteral 'long _Accum' cinit
327 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'long _Accum' 0.9999999995343387126922607421875
328 //CHECK-NEXT: |-VarDecl {{.*}} longfractliteral 'long _Fract' cinit
329 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'long _Fract' 0.999999989755451679229736328125
330 //CHECK-NEXT: |-VarDecl {{.*}} longfractliteral2 'long _Fract' cinit
331 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'long _Fract' 0.9999999986030161380767822265625
332 //CHECK-NEXT: |-VarDecl {{.*}} verylongfractliteral 'long _Fract' cinit
333 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'long _Fract' 0.9999999995343387126922607421875
334 
335 unsigned _Accum uliteral1 = 2.5uk;    // Unsigned
336 _Accum literal8 = -2.5k;              // Negative
337 
338 //CHECK-NEXT: |-VarDecl {{.*}} uliteral1 'unsigned _Accum' cinit
339 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'unsigned _Accum' 2.5
340 //CHECK-NEXT: |-VarDecl {{.*}} literal8 '_Accum' cinit
341 //CHECK-NEXT:   `-UnaryOperator {{.*}} '_Accum' prefix '-'
342 //CHECK-NEXT:     `-FixedPointLiteral {{.*}} '_Accum' 2.5
343 
344 short _Accum  literalexact1 = 0.9921875hk;  // Exact value
345 _Accum        literalexact2 = 0.999969482421875k;
346 
347 //CHECK-NEXT: |-VarDecl {{.*}} literalexact1 'short _Accum' cinit
348 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'short _Accum' 0.9921875
349 //CHECK-NEXT: |-VarDecl {{.*}} literalexact2 '_Accum' cinit
350 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 0.999969482421875
351 
352 // Unfortunately we do not have enough space to store the exact decimal value of
353 // 0.9999999995343387126922607421875 ((1 << 31) - 1), but we can still use a
354 // large number of 9s to get the max fractional value.
355 long _Accum   long_accum_max = 0.999999999999999999999999999lk;
356 
357 //CHECK-NEXT: |-VarDecl {{.*}} long_accum_max 'long _Accum' cinit
358 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'long _Accum' 0.9999999995343387126922607421875
359 
360 // Epsilon
361 short _Accum  short_accum_eps   = 0.0078125hk;
362 short _Accum  short_accum_eps2  = 0.0078124hk;  // Less than epsilon floors to zero
363 _Accum        accum_eps         = 0.000030517578125k;
364 _Accum        accum_eps2        = 0.000030517578124k;
365 long _Accum   long_accum_eps    = 0x1p-31lk;
366 long _Accum   long_accum_eps2   = 0x0.99999999p-31lk;
367 
368 //CHECK-NEXT: |-VarDecl {{.*}} short_accum_eps 'short _Accum' cinit
369 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'short _Accum' 0.0078125
370 //CHECK-NEXT: |-VarDecl {{.*}} short_accum_eps2 'short _Accum' cinit
371 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'short _Accum' 0.0
372 //CHECK-NEXT: |-VarDecl {{.*}} accum_eps '_Accum' cinit
373 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 0.000030517578125
374 //CHECK-NEXT: |-VarDecl {{.*}} accum_eps2 '_Accum' cinit
375 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 0.0
376 //CHECK-NEXT: |-VarDecl {{.*}} long_accum_eps 'long _Accum' cinit
377 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'long _Accum' 0.0000000004656612873077392578125
378 //CHECK-NEXT: |-VarDecl {{.*}} long_accum_eps2 'long _Accum' cinit
379 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'long _Accum' 0.0
380 
381 // Fract literals can be one but evaluate to the respective Fract max
382 short _Fract           short_fract_one   = 1.0hr;
383 _Fract                 fract_one         = 1.0r;
384 long _Fract            long_fract_one    = 1.0lr;
385 unsigned short _Fract  u_short_fract_one = 1.0uhr;
386 unsigned _Fract        u_fract_one       = 1.0ur;
387 unsigned long _Fract   u_long_fract_one  = 1.0ulr;
388 
389 //CHECK-NEXT: |-VarDecl {{.*}} short_fract_one 'short _Fract' cinit
390 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'short _Fract' 0.9921875
391 //CHECK-NEXT: |-VarDecl {{.*}} fract_one '_Fract' cinit
392 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Fract' 0.999969482421875
393 //CHECK-NEXT: |-VarDecl {{.*}} long_fract_one 'long _Fract' cinit
394 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'long _Fract' 0.9999999995343387126922607421875
395 
396 //CHECK-NEXT: |-VarDecl {{.*}} u_short_fract_one 'unsigned short _Fract' cinit
397 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'unsigned short _Fract' 0.99609375
398 //CHECK-NEXT: |-VarDecl {{.*}} u_fract_one 'unsigned _Fract' cinit
399 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'unsigned _Fract' 0.9999847412109375
400 //CHECK-NEXT: |-VarDecl {{.*}} u_long_fract_one 'unsigned long _Fract' cinit
401 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} 'unsigned long _Fract' 0.99999999976716935634613037109375
402 
403 _Accum literallast = 1.0k;    // One
404 
405 //CHECK-NEXT: `-VarDecl {{.*}} literallast '_Accum' cinit
406 //CHECK-NEXT:   `-FixedPointLiteral {{.*}} '_Accum' 1.0
407