1 /* Copyright (C) 2004  Free Software Foundation.
2 
3    Verify that GCC can determine which built-in functions produce a
4    nonnegative result.
5 
6    Written by Kaveh Ghazi, 2004-03-10.  */
7 
8 /* { dg-do link } */
9 /* This test needs more recursion than the default.  PR 68097 is about
10    adding proper range information for reals, so that no recursion
11    would be necessary.  */
12 /* { dg-options "-ffast-math --param max-ssa-name-query-depth=3" } */
13 /* { dg-skip-if "" { *-*-* } { "-O0" } { "" } } */
14 
15 #define PROTOTYPE_RTYPE(FN,RTYPE) extern RTYPE FN(double); \
16   extern RTYPE FN##f(float); \
17   extern RTYPE FN##l(long double);
18 #define PROTOTYPE(FN) extern double FN(double); extern float FN##f(float); \
19   extern long double FN##l(long double);
20 #define PROTOTYPE2(FN) extern double FN(double, double); \
21   extern float FN##f(float, float); \
22   extern long double FN##l(long double, long double);
23 #define CPROTOTYPE1(FN) extern double FN(_Complex double); \
24   extern float FN##f(_Complex float); \
25   extern long double FN##l(_Complex long double);
26 #define CPROTOTYPE1(FN) extern double FN(_Complex double); \
27   extern float FN##f(_Complex float); \
28   extern long double FN##l(_Complex long double);
29 #define IPROTOTYPE(FN) extern int FN(int); extern int FN##l(long); \
30   extern int FN##ll(long long);
31 #define PROTOTYPE2TYPE2(FN,A2TYPE) extern double FN(double, A2TYPE); \
32   extern float FN##f(float, A2TYPE); \
33   extern long double FN##l(long double, A2TYPE);
34 #define PROTOTYPE2_A2FPTR(FN) extern double FN(double, double *); \
35   extern float FN##f(float, float *); \
36   extern long double FN##l(long double, long double *);
37 
38 extern int signbit (double);
39 extern int signbitf (float);
40 extern int signbitl (long double);
41 
test(double d1,double d2,float f1,float f2,long double ld1,long double ld2)42 void test(double d1, double d2, float f1, float f2,
43 	  long double ld1, long double ld2)
44 {
45   /* These are always nonnegative.  */
46 
47 #define TEST1(FN) \
48  extern void link_failure_##FN (void); PROTOTYPE(FN) \
49  if (signbit(FN(d1)) || signbitf(FN##f(f1)) || signbitl(FN##l(ld1))) \
50    link_failure_##FN()
51 
52 #define TEST2(FN) \
53  extern void link_failure_##FN (void); PROTOTYPE2(FN) \
54  if (signbit(FN(d1,d2)) || signbitf(FN##f(f1,f2)) || signbitl(FN##l(ld1,ld2))) \
55    link_failure_##FN()
56 
57 #define CTEST1(FN) \
58  extern void link_failure_##FN (void); CPROTOTYPE1(FN) \
59  if (signbit(FN(d1)) || signbitf(FN##f(f1)) || signbitl(FN##l(ld1))) \
60    link_failure_##FN()
61 
62 #define ITEST1(FN) \
63  extern void link_failure_##FN (void); IPROTOTYPE(FN) \
64  if (signbit(FN(d1)) || signbitf(FN##l(f1)) || signbitl(FN##ll(ld1))) \
65    link_failure_##FN()
66 
67   TEST1 (acos);
68   TEST1 (acosh);
69   CTEST1 (cabs);
70   TEST1 (cosh);
71   TEST1 (erfc);
72   TEST1 (exp);
73   TEST1 (exp10);
74   TEST1 (exp2);
75   TEST1 (fabs);
76   TEST2 (fdim);
77   TEST2 (hypot);
78   TEST1 (pow10);
79   TEST1 (sqrt);
80   ITEST1 (ffs);
81   ITEST1 (__builtin_parity);
82   ITEST1 (__builtin_popcount);
83 
84   /* These are nonnegative if the first argument is.  */
85 #define ARG1TEST1(FN) \
86  extern void link_failure_##FN (void); PROTOTYPE(FN) \
87  if (signbit(FN(fabs(d1))) || signbitf(FN##f(fabsf(f1))) \
88      || signbitl(FN##l(fabsl(ld1)))) \
89    link_failure_##FN()
90 
91   /* Same, but allow specifying the return type.  */
92 #define ARG1TEST1_RTYPE(FN,RTYPE) \
93  extern void link_failure_##FN (void); PROTOTYPE_RTYPE(FN,RTYPE) \
94  if (signbit(FN(fabs(d1))) || signbitf(FN##f(fabsf(f1))) \
95      || signbitl(FN##l(fabsl(ld1)))) \
96    link_failure_##FN()
97 
98   /* These are nonnegative if the first argument is.  */
99 #define ARG1TEST2(FN) \
100  extern void link_failure_##FN (void); PROTOTYPE2(FN) \
101  if (signbit(FN(fabs(d1),d2)) || signbitf(FN##f(fabsf(f1),f2)) \
102      || signbitl(FN##l(fabsl(ld1),ld2))) \
103    link_failure_##FN()
104 
105   /* These are nonnegative if the second argument is.  */
106 #define ARG2TEST2(FN) \
107  extern void link_failure_##FN (void); PROTOTYPE2(FN) \
108  if (signbit(FN(d1,fabs(d2))) || signbitf(FN##f(f1,fabsf(f2))) \
109      || signbitl(FN##l(ld1,fabsl(ld2)))) \
110    link_failure_##FN()
111 
112   /* These are nonnegative if the first OR second argument is.  */
113 #define ARG2TESTor(FN) \
114  extern void link_failure_##FN (void); PROTOTYPE2(FN) \
115  if (signbit(FN(fabs(d1),d2)) || signbitf(FN##f(fabsf(f1),f2)) \
116      || signbitl(FN##l(fabsl(ld1),ld2)) || signbit(FN(d1,fabs(d2))) \
117      || signbitf(FN##f(f1,fabsf(f2))) || signbitl(FN##l(ld1,fabsl(ld2)))) \
118    link_failure_##FN()
119 
120   /* These are nonnegative if the first AND second argument is.  */
121 #define ARG2TESTand(FN) \
122  extern void link_failure_##FN (void); PROTOTYPE2(FN) \
123  if (signbit(FN(fabs(d1),fabs(d2))) || signbitf(FN##f(fabsf(f1),fabsf(f2))) \
124      || signbitl(FN##l(fabsl(ld1),fabsl(ld2)))) \
125    link_failure_##FN()
126 
127   /* These are nonnegative if the first argument is, 2nd arg is an int.  */
128 #define ARG1TEST2_A2INT(FN, INTTYPE) \
129  extern void link_failure_##FN (void); PROTOTYPE2TYPE2(FN, INTTYPE) \
130  if (signbit(FN(fabs(d1),d2)) || signbitf(FN##f(fabsf(f1),f2)) \
131      || signbitl(FN##l(fabsl(ld1),ld2))) \
132    link_failure_##FN()
133 
134   /* These are nonnegative if the first argument is, specify 2nd arg.  */
135 #define ARG2TEST1_A2FPTR(FN) \
136  extern void link_failure_##FN (void); PROTOTYPE2_A2FPTR(FN) \
137  if (signbit(FN(fabs(d1),&d2)) || signbitf(FN##f(fabsf(f1),&f2)) \
138      || signbitl(FN##l(fabsl(ld1),&ld2))) \
139    link_failure_##FN()
140 
141   ARG1TEST1 (asinh);
142   ARG1TEST1 (atan);
143   ARG1TEST1 (atanh);
144   ARG1TEST1 (cbrt);
145   ARG1TEST1 (ceil);
146   ARG1TEST1 (erf);
147   ARG1TEST1 (expm1);
148   ARG1TEST1 (floor);
149   ARG1TEST2 (fmod);
150   ARG1TEST2_A2INT (ldexp, int);
151   ARG1TEST1_RTYPE (__builtin_llceil, long long);
152   ARG1TEST1_RTYPE (__builtin_llfloor, long long);
153   ARG1TEST1_RTYPE (llrint, long long);
154   ARG1TEST1_RTYPE (llround, long long);
155   ARG1TEST1_RTYPE (__builtin_lceil, long);
156   ARG1TEST1_RTYPE (__builtin_lfloor, long);
157   ARG1TEST1_RTYPE (lrint, long);
158   ARG1TEST1_RTYPE (lround, long);
159   /* The modf* functions aren't ever "const" or "pure" even with
160      -ffast-math so they won't be eliminated and yield a link failure.  */
161   /* ARG2TEST1_A2FPTR (modf);*/
162   ARG1TEST1 (nearbyint);
163   ARG1TEST2 (pow);
164   ARG1TEST1 (rint);
165   ARG1TEST1 (round);
166   ARG1TEST2 (scalb);
167   ARG1TEST2_A2INT (scalbln, long);
168   ARG1TEST2_A2INT (scalbn, int);
169   ARG1TEST1_RTYPE (signbit, int);
170   ARG1TEST1 (significand);
171   ARG1TEST1 (sinh);
172   ARG1TEST1 (tanh);
173   ARG1TEST1 (trunc);
174 
175   ARG2TESTor (fmax);
176   ARG2TESTand (fmin);
177   ARG2TEST2 (copysign);
178 
179 }
180 
main(void)181 int main (void)
182 {
183   return 0;
184 }
185