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

   1 /* Copyright (C) 2010  Free Software Foundation.
   2
   3    Verify that folding of built-in cproj is correctly performed by the
   4    compiler.
   5
   6    Origin: Kaveh R. Ghazi,  April 9, 2010.  */
   7
   8 /* { dg-do link } */
   9
  10 /* All references to link_error should go away at compile-time.  The
  11    argument is the __LINE__ number.  It appears in the tree dump file
  12    and aids in debugging should any of the tests fail.  */
  13 extern void link_error(int);
  14
  15 #define CPROJ(X) __builtin_cproj(X)
  16 #define CPROJF(X) __builtin_cprojf(X)
  17 #define CPROJL(X) __builtin_cprojl(X)
  18 #define INF __builtin_inff()
  19 #define I 1i
  20 #define CPSGN(X,Y) __builtin_copysignf((X),(Y))
  21 #define CIMAG(X) __builtin_cimagf(X)
  22 #define CREAL(X) __builtin_crealf(X)
  23
  24 /* Check that the signs of the real and/or imaginary parts of two
  25    complex numbers match.  */
  26 #define CKSGN(X,Y) (CKSGN_R(X,Y) || CKSGN_I(X,Y))
  27 #define CKSGN_R(X,Y) (CPSGN(1,CREAL(X)) != CPSGN(1,CREAL(Y)))
  28 #define CKSGN_I(X,Y) (CPSGN(1,CIMAG(X)) != CPSGN(1,CIMAG(Y)))
  29
  30 /* Test that (cproj(X) == ZERO+Inf) and that the signs of the
  31    imaginary parts match.  ZERO is +/- 0i.  */
  32 #define TEST_CST_INF(X,ZERO) do { \
  33   if (CPROJF(X) != ZERO+INF || CKSGN_I(CPROJF(X),ZERO+INF)) \
  34     link_error(__LINE__); \
  35   if (CPROJ(X) != ZERO+INF || CKSGN_I(CPROJ(X),ZERO+INF)) \
  36     link_error(__LINE__); \
  37   if (CPROJL(X) != ZERO+INF || CKSGN_I(CPROJL(X),ZERO+INF)) \
  38     link_error(__LINE__); \
  39 } while (0)
  40
  41 /* Test that (cproj(X) == X) for all finite (X).  */
  42 #define TEST_CST(X) do { \
  43   if (CPROJF(X) != (X) || CKSGN(CPROJF(X),(X))) \
  44     link_error(__LINE__); \
  45 } while (0)
  46
  47 /* Test that cproj(X + I*INF) -> (ZERO + INF), where ZERO is +-0i.
  48    NEG is either blank or a minus sign when ZERO is negative.  */
  49 #define TEST_IMAG_INF(NEG,ZERO) do { \
  50   if (CPROJF(f+I*NEG INF) != ZERO+INF \
  51       || CKSGN_I (CPROJF(f+I*NEG INF), ZERO+INF)) \
  52     link_error(__LINE__); \
  53   if (CPROJ(d+I*NEG INF) != ZERO+INF \
  54       || CKSGN_I (CPROJ(d+I*NEG INF), ZERO+INF)) \
  55     link_error(__LINE__); \
  56   if (CPROJL(ld+I*NEG INF) != ZERO+INF \
  57       || CKSGN_I (CPROJL(ld+I*NEG INF), ZERO+INF)) \
  58     link_error(__LINE__); \
  59 } while (0)
  60
  61 /* Like TEST_IMAG_INF, but check that side effects are honored.  */
  62 #define TEST_IMAG_INF_SIDE_EFFECT(NEG,ZERO) do { \
  63   int side = 4; \
  64   if (CPROJF(++side+I*NEG INF) != ZERO+INF \
  65       || CKSGN_I (CPROJF(++side+I*NEG INF), ZERO+INF)) \
  66     link_error(__LINE__); \
  67   if (CPROJ(++side+I*NEG INF) != ZERO+INF \
  68       || CKSGN_I (CPROJ(++side+I*NEG INF), ZERO+INF)) \
  69     link_error(__LINE__); \
  70   if (CPROJL(++side+I*NEG INF) != ZERO+INF \
  71       || CKSGN_I (CPROJL(++side+I*NEG INF), ZERO+INF)) \
  72     link_error(__LINE__); \
  73   if (side != 10) \
  74     link_error(__LINE__); \
  75 } while (0)
  76
  77 /* Test that cproj(INF, POSITIVE) -> INF+0i.  NEG is either blank or a
  78    minus sign to test negative INF.  */
  79 #define TEST_REAL_INF(NEG) do { \
  80   __real cf = NEG INF; \
  81   __imag cf = (x ? 4 : 5); \
  82   if (CPROJF(cf) != INF \
  83       || CKSGN_I (CPROJF(cf), INF)) \
  84     link_error(__LINE__); \
  85   __real cd = NEG INF; \
  86   __imag cd = (x ? 4 : 5); \
  87   if (CPROJ(cd) != INF \
  88       || CKSGN_I (CPROJ(cd), INF)) \
  89     link_error(__LINE__); \
  90   __real cld = NEG INF; \
  91   __imag cld = (x ? 4 : 5); \
  92   if (CPROJL(cld) != INF \
  93       || CKSGN_I (CPROJL(cld), INF)) \
  94     link_error(__LINE__); \
  95 } while (0)
  96
  97 /* Like TEST_REAL_INF, but check that side effects are honored.  */
  98 #define TEST_REAL_INF_SIDE_EFFECT(NEG) do { \
  99   int side = -9; \
 100   __real cf = NEG INF; \
 101   __imag cf = (x ? 4 : 5); \
 102   if (CPROJF((++side,cf)) != INF \
 103       || CKSGN_I (CPROJF((++side,cf)), INF)) \
 104     link_error(__LINE__); \
 105   __real cd = NEG INF; \
 106   __imag cd = (x ? 4 : 5); \
 107   if (CPROJ((++side,cd)) != INF \
 108       || CKSGN_I (CPROJ((++side,cd)), INF)) \
 109     link_error(__LINE__); \
 110   __real cld = NEG INF; \
 111   __imag cld = (x ? 4 : 5); \
 112   if (CPROJL((++side,cld)) != INF \
 113       || CKSGN_I (CPROJL((++side,cld)), INF)) \
 114     link_error(__LINE__); \
 115   if (side != -3) \
 116     link_error(__LINE__); \
 117 } while (0)
 118
 119 void foo (_Complex long double cld, _Complex double cd, _Complex float cf,
 120           long double ld, double d, float f, int x)
 121 {
 122   TEST_CST_INF (INF+0I, 0);
 123   TEST_CST_INF (INF-0I, -0.FI);
 124   TEST_CST_INF (INF+4I, 0);
 125   TEST_CST_INF (INF-4I, -0.FI);
 126   TEST_CST_INF (-INF+0I, 0);
 127   TEST_CST_INF (-INF-0I, -0.FI);
 128   TEST_CST_INF (-INF+4I, 0);
 129   TEST_CST_INF (-INF-4I, -0.FI);
 130
 131   TEST_CST_INF (0+I*INF, 0);
 132   TEST_CST_INF (0-I*INF, -0.FI);
 133   TEST_CST_INF (23+I*INF, 0);
 134   TEST_CST_INF (23-I*INF, -0.FI);
 135   TEST_CST_INF (-0.F+I*INF, 0);
 136   TEST_CST_INF (-0.F-I*INF, -0.FI);
 137   TEST_CST_INF (-23+I*INF, 0);
 138   TEST_CST_INF (-23-I*INF, -0.FI);
 139
 140   TEST_CST_INF (INF+I*INF, 0);
 141   TEST_CST_INF (INF-I*INF, -0.FI);
 142   TEST_CST_INF (-INF+I*INF, 0);
 143   TEST_CST_INF (-INF-I*INF, -0.FI);
 144
 145   TEST_CST (0);
 146   TEST_CST (-0.F);
 147   TEST_CST (0-0.FI);
 148   TEST_CST (-0.F-0.FI);
 149
 150   TEST_CST (22+3I);
 151   TEST_CST (22-3I);
 152   TEST_CST (-22+3I);
 153   TEST_CST (-22-3I);
 154
 155   TEST_IMAG_INF (,0.FI);
 156   TEST_IMAG_INF (-,-0.FI);
 157
 158 #ifdef __OPTIMIZE__
 159   TEST_REAL_INF( );
 160   TEST_REAL_INF(-);
 161
 162   TEST_IMAG_INF_SIDE_EFFECT (,0.FI);
 163   TEST_IMAG_INF_SIDE_EFFECT (-,-0.FI);
 164
 165   TEST_REAL_INF_SIDE_EFFECT( );
 166   TEST_REAL_INF_SIDE_EFFECT(-);
 167 #endif
 168
 169   return;
 170 }
 171
 172 int main (void)
 173 {
 174   return 0;
 175 }