gcc/testsuite/gcc.dg/torture/builtin-nonneg-1.c

   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 /* { dg-options "-ffast-math" } */
  10
  11 #define PROTOTYPE_RTYPE(FN,RTYPE) extern RTYPE FN(double); \
  12   extern RTYPE FN##f(float); \
  13   extern RTYPE FN##l(long double);
  14 #define PROTOTYPE(FN) extern double FN(double); extern float FN##f(float); \
  15   extern long double FN##l(long double);
  16 #define PROTOTYPE2(FN) extern double FN(double, double); \
  17   extern float FN##f(float, float); \
  18   extern long double FN##l(long double, long double);
  19 #define CPROTOTYPE1(FN) extern double FN(_Complex double); \
  20   extern float FN##f(_Complex float); \
  21   extern long double FN##l(_Complex long double);
  22 #define CPROTOTYPE1(FN) extern double FN(_Complex double); \
  23   extern float FN##f(_Complex float); \
  24   extern long double FN##l(_Complex long double);
  25 #define IPROTOTYPE(FN) extern int FN(int); extern int FN##l(long); \
  26   extern int FN##ll(long long);
  27 #define PROTOTYPE2TYPE2(FN,A2TYPE) extern double FN(double, A2TYPE); \
  28   extern float FN##f(float, A2TYPE); \
  29   extern long double FN##l(long double, A2TYPE);
  30 #define PROTOTYPE2_A2FPTR(FN) extern double FN(double, double *); \
  31   extern float FN##f(float, float *); \
  32   extern long double FN##l(long double, long double *);
  33
  34 extern int signbit (double);
  35 extern int signbitf (float);
  36 extern int signbitl (long double);
  37
  38 void test(double d1, double d2, float f1, float f2,
  39           long double ld1, long double ld2)
  40 {
  41   /* These are always nonnegative.  */
  42
  43 #define TEST1(FN) \
  44  extern void link_failure_##FN (void); PROTOTYPE(FN) \
  45  if (signbit(FN(d1)) || signbitf(FN##f(f1)) || signbitl(FN##l(ld1))) \
  46    link_failure_##FN()
  47
  48 #define TEST2(FN) \
  49  extern void link_failure_##FN (void); PROTOTYPE2(FN) \
  50  if (signbit(FN(d1,d2)) || signbitf(FN##f(f1,f2)) || signbitl(FN##l(ld1,ld2))) \
  51    link_failure_##FN()
  52
  53 #define CTEST1(FN) \
  54  extern void link_failure_##FN (void); CPROTOTYPE1(FN) \
  55  if (signbit(FN(d1)) || signbitf(FN##f(f1)) || signbitl(FN##l(ld1))) \
  56    link_failure_##FN()
  57
  58 #define ITEST1(FN) \
  59  extern void link_failure_##FN (void); IPROTOTYPE(FN) \
  60  if (signbit(FN(d1)) || signbitf(FN##l(f1)) || signbitl(FN##ll(ld1))) \
  61    link_failure_##FN()
  62
  63   TEST1 (acos);
  64   TEST1 (acosh);
  65   CTEST1 (cabs);
  66   TEST1 (cosh);
  67   TEST1 (erfc);
  68   TEST1 (exp);
  69   TEST1 (exp10);
  70   TEST1 (exp2);
  71   TEST1 (fabs);
  72   TEST2 (fdim);
  73   TEST2 (hypot);
  74   TEST1 (pow10);
  75   TEST1 (sqrt);
  76   ITEST1 (ffs);
  77   ITEST1 (__builtin_parity);
  78   ITEST1 (__builtin_popcount);
  79
  80   /* These are nonnegative if the first argument is.  */
  81 #define ARG1TEST1(FN) \
  82  extern void link_failure_##FN (void); PROTOTYPE(FN) \
  83  if (signbit(FN(fabs(d1))) || signbitf(FN##f(fabsf(f1))) \
  84      || signbitl(FN##l(fabsl(ld1)))) \
  85    link_failure_##FN()
  86
  87   /* Same, but allow specifying the return type.  */
  88 #define ARG1TEST1_RTYPE(FN,RTYPE) \
  89  extern void link_failure_##FN (void); PROTOTYPE_RTYPE(FN,RTYPE) \
  90  if (signbit(FN(fabs(d1))) || signbitf(FN##f(fabsf(f1))) \
  91      || signbitl(FN##l(fabsl(ld1)))) \
  92    link_failure_##FN()
  93
  94   /* These are nonnegative if the first argument is.  */
  95 #define ARG1TEST2(FN) \
  96  extern void link_failure_##FN (void); PROTOTYPE2(FN) \
  97  if (signbit(FN(fabs(d1),d2)) || signbitf(FN##f(fabsf(f1),f2)) \
  98      || signbitl(FN##l(fabsl(ld1),ld2))) \
  99    link_failure_##FN()
 100
 101   /* These are nonnegative if the second argument is.  */
 102 #define ARG2TEST2(FN) \
 103  extern void link_failure_##FN (void); PROTOTYPE2(FN) \
 104  if (signbit(FN(d1,fabs(d2))) || signbitf(FN##f(f1,fabsf(f2))) \
 105      || signbitl(FN##l(ld1,fabsl(ld2)))) \
 106    link_failure_##FN()
 107
 108   /* These are nonnegative if the first OR second argument is.  */
 109 #define ARG2TESTor(FN) \
 110  extern void link_failure_##FN (void); PROTOTYPE2(FN) \
 111  if (signbit(FN(fabs(d1),d2)) || signbitf(FN##f(fabsf(f1),f2)) \
 112      || signbitl(FN##l(fabsl(ld1),ld2)) || signbit(FN(d1,fabs(d2))) \
 113      || signbitf(FN##f(f1,fabsf(f2))) || signbitl(FN##l(ld1,fabsl(ld2)))) \
 114    link_failure_##FN()
 115
 116   /* These are nonnegative if the first AND second argument is.  */
 117 #define ARG2TESTand(FN) \
 118  extern void link_failure_##FN (void); PROTOTYPE2(FN) \
 119  if (signbit(FN(fabs(d1),fabs(d2))) || signbitf(FN##f(fabsf(f1),fabsf(f2))) \
 120      || signbitl(FN##l(fabsl(ld1),fabsl(ld2)))) \
 121    link_failure_##FN()
 122
 123   /* These are nonnegative if the first argument is, 2nd arg is an int.  */
 124 #define ARG1TEST2_A2INT(FN, INTTYPE) \
 125  extern void link_failure_##FN (void); PROTOTYPE2TYPE2(FN, INTTYPE) \
 126  if (signbit(FN(fabs(d1),d2)) || signbitf(FN##f(fabsf(f1),f2)) \
 127      || signbitl(FN##l(fabsl(ld1),ld2))) \
 128    link_failure_##FN()
 129
 130   /* These are nonnegative if the first argument is, specify 2nd arg.  */
 131 #define ARG2TEST1_A2FPTR(FN) \
 132  extern void link_failure_##FN (void); PROTOTYPE2_A2FPTR(FN) \
 133  if (signbit(FN(fabs(d1),&d2)) || signbitf(FN##f(fabsf(f1),&f2)) \
 134      || signbitl(FN##l(fabsl(ld1),&ld2))) \
 135    link_failure_##FN()
 136
 137   ARG1TEST1 (asinh);
 138   ARG1TEST1 (atan);
 139   ARG1TEST1 (atanh);
 140   ARG1TEST1 (cbrt);
 141   ARG1TEST1 (ceil);
 142   ARG1TEST1 (erf);
 143   ARG1TEST1 (expm1);
 144   ARG1TEST1 (floor);
 145   ARG1TEST2 (fmod);
 146   ARG1TEST2_A2INT (ldexp, int);
 147   ARG1TEST1_RTYPE (__builtin_llceil, long long);
 148   ARG1TEST1_RTYPE (__builtin_llfloor, long long);
 149   ARG1TEST1_RTYPE (llrint, long long);
 150   ARG1TEST1_RTYPE (llround, long long);
 151   ARG1TEST1_RTYPE (__builtin_lceil, long);
 152   ARG1TEST1_RTYPE (__builtin_lfloor, long);
 153   ARG1TEST1_RTYPE (lrint, long);
 154   ARG1TEST1_RTYPE (lround, long);
 155   /* The modf* functions aren't ever "const" or "pure" even with
 156      -ffast-math so they won't be eliminated and yield a link failure.  */
 157   /* ARG2TEST1_A2FPTR (modf);*/
 158   ARG1TEST1 (nearbyint);
 159   ARG1TEST2 (pow);
 160   ARG1TEST1 (rint);
 161   ARG1TEST1 (round);
 162   ARG1TEST2 (scalb);
 163   ARG1TEST2_A2INT (scalbln, long);
 164   ARG1TEST2_A2INT (scalbn, int);
 165   ARG1TEST1_RTYPE (signbit, int);
 166   ARG1TEST1 (significand);
 167   ARG1TEST1 (sinh);
 168   ARG1TEST1 (tanh);
 169   ARG1TEST1 (trunc);
 170
 171   ARG2TESTor (fmax);
 172   ARG2TESTand (fmin);
 173   ARG2TEST2 (copysign);
 174
 175 }
 176
 177 int main (void)
 178 {
 179   return 0;
 180 }