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 /* { dg-add-options ieee } */
  10
  11 /* All references to link_error should go away at compile-time.  The
  12    argument is the __LINE__ number.  It appears in the tree dump file
  13    and aids in debugging should any of the tests fail.  */
  14 extern void link_error(int);
  15
  16 #define CPROJ(X) __builtin_cproj(X)
  17 #define CPROJF(X) __builtin_cprojf(X)
  18 #define CPROJL(X) __builtin_cprojl(X)
  19 #define INF __builtin_inff()
  20 #define I 1i
  21 #define CPSGN(X,Y) __builtin_copysignf((X),(Y))
  22 #define CIMAG(X) __builtin_cimagf(X)
  23 #define CREAL(X) __builtin_crealf(X)
  24
  25 /* Check that the signs of the real and/or imaginary parts of two
  26    complex numbers match.  */
  27 #define CKSGN(X,Y) (CKSGN_R(X,Y) || CKSGN_I(X,Y))
  28 #define CKSGN_R(X,Y) (CPSGN(1,CREAL(X)) != CPSGN(1,CREAL(Y)))
  29 #define CKSGN_I(X,Y) (CPSGN(1,CIMAG(X)) != CPSGN(1,CIMAG(Y)))
  30
  31 /* Test that (cproj(X) == ZERO+Inf) and that the signs of the
  32    imaginary parts match.  ZERO is +/- 0i.  */
  33 #define TEST_CST_INF(X,ZERO) do { \
  34   if (CPROJF(X) != ZERO+INF || CKSGN_I(CPROJF(X),ZERO+INF)) \
  35     link_error(__LINE__); \
  36   if (CPROJ(X) != ZERO+INF || CKSGN_I(CPROJ(X),ZERO+INF)) \
  37     link_error(__LINE__); \
  38   if (CPROJL(X) != ZERO+INF || CKSGN_I(CPROJL(X),ZERO+INF)) \
  39     link_error(__LINE__); \
  40 } while (0)
  41
  42 /* Test that (cproj(X) == X) for all finite (X).  */
  43 #define TEST_CST(X) do { \
  44   if (CPROJF(X) != (X) || CKSGN(CPROJF(X),(X))) \
  45     link_error(__LINE__); \
  46 } while (0)
  47
  48 /* Test that cproj(X + I*INF) -> (ZERO + INF), where ZERO is +-0i.
  49    NEG is either blank or a minus sign when ZERO is negative.  */
  50 #define TEST_IMAG_INF(NEG,ZERO) do { \
  51   if (CPROJF(f+I*NEG INF) != ZERO+INF \
  52       || CKSGN_I (CPROJF(f+I*NEG INF), ZERO+INF)) \
  53     link_error(__LINE__); \
  54   if (CPROJ(d+I*NEG INF) != ZERO+INF \
  55       || CKSGN_I (CPROJ(d+I*NEG INF), ZERO+INF)) \
  56     link_error(__LINE__); \
  57   if (CPROJL(ld+I*NEG INF) != ZERO+INF \
  58       || CKSGN_I (CPROJL(ld+I*NEG INF), ZERO+INF)) \
  59     link_error(__LINE__); \
  60 } while (0)
  61
  62 /* Like TEST_IMAG_INF, but check that side effects are honored.  */
  63 #define TEST_IMAG_INF_SIDE_EFFECT(NEG,ZERO) do { \
  64   int side = 4; \
  65   if (CPROJF(++side+I*NEG INF) != ZERO+INF \
  66       || CKSGN_I (CPROJF(++side+I*NEG INF), ZERO+INF)) \
  67     link_error(__LINE__); \
  68   if (CPROJ(++side+I*NEG INF) != ZERO+INF \
  69       || CKSGN_I (CPROJ(++side+I*NEG INF), ZERO+INF)) \
  70     link_error(__LINE__); \
  71   if (CPROJL(++side+I*NEG INF) != ZERO+INF \
  72       || CKSGN_I (CPROJL(++side+I*NEG INF), ZERO+INF)) \
  73     link_error(__LINE__); \
  74   if (side != 10) \
  75     link_error(__LINE__); \
  76 } while (0)
  77
  78 /* Test that cproj(INF, POSITIVE) -> INF+0i.  NEG is either blank or a
  79    minus sign to test negative INF.  */
  80 #define TEST_REAL_INF(NEG) do { \
  81   __real cf = NEG INF; \
  82   __imag cf = (x ? 4 : 5); \
  83   if (CPROJF(cf) != INF \
  84       || CKSGN_I (CPROJF(cf), INF)) \
  85     link_error(__LINE__); \
  86   __real cd = NEG INF; \
  87   __imag cd = (x ? 4 : 5); \
  88   if (CPROJ(cd) != INF \
  89       || CKSGN_I (CPROJ(cd), INF)) \
  90     link_error(__LINE__); \
  91   __real cld = NEG INF; \
  92   __imag cld = (x ? 4 : 5); \
  93   if (CPROJL(cld) != INF \
  94       || CKSGN_I (CPROJL(cld), INF)) \
  95     link_error(__LINE__); \
  96 } while (0)
  97
  98 /* Like TEST_REAL_INF, but check that side effects are honored.  */
  99 #define TEST_REAL_INF_SIDE_EFFECT(NEG) do { \
 100   int side = -9; \
 101   __real cf = NEG INF; \
 102   __imag cf = (x ? 4 : 5); \
 103   if (CPROJF((++side,cf)) != INF \
 104       || CKSGN_I (CPROJF((++side,cf)), INF)) \
 105     link_error(__LINE__); \
 106   __real cd = NEG INF; \
 107   __imag cd = (x ? 4 : 5); \
 108   if (CPROJ((++side,cd)) != INF \
 109       || CKSGN_I (CPROJ((++side,cd)), INF)) \
 110     link_error(__LINE__); \
 111   __real cld = NEG INF; \
 112   __imag cld = (x ? 4 : 5); \
 113   if (CPROJL((++side,cld)) != INF \
 114       || CKSGN_I (CPROJL((++side,cld)), INF)) \
 115     link_error(__LINE__); \
 116   if (side != -3) \
 117     link_error(__LINE__); \
 118 } while (0)
 119
 120 void foo (_Complex long double cld, _Complex double cd, _Complex float cf,
 121           long double ld, double d, float f, int x)
 122 {
 123   TEST_CST_INF (INF+0I, 0);
 124   TEST_CST_INF (INF-0I, -0.FI);
 125   TEST_CST_INF (INF+4I, 0);
 126   TEST_CST_INF (INF-4I, -0.FI);
 127   TEST_CST_INF (-INF+0I, 0);
 128   TEST_CST_INF (-INF-0I, -0.FI);
 129   TEST_CST_INF (-INF+4I, 0);
 130   TEST_CST_INF (-INF-4I, -0.FI);
 131
 132   TEST_CST_INF (0+I*INF, 0);
 133   TEST_CST_INF (0-I*INF, -0.FI);
 134   TEST_CST_INF (23+I*INF, 0);
 135   TEST_CST_INF (23-I*INF, -0.FI);
 136   TEST_CST_INF (-0.F+I*INF, 0);
 137   TEST_CST_INF (-0.F-I*INF, -0.FI);
 138   TEST_CST_INF (-23+I*INF, 0);
 139   TEST_CST_INF (-23-I*INF, -0.FI);
 140
 141   TEST_CST_INF (INF+I*INF, 0);
 142   TEST_CST_INF (INF-I*INF, -0.FI);
 143   TEST_CST_INF (-INF+I*INF, 0);
 144   TEST_CST_INF (-INF-I*INF, -0.FI);
 145
 146   TEST_CST (0);
 147   TEST_CST (-0.F);
 148   TEST_CST (0-0.FI);
 149   TEST_CST (-0.F-0.FI);
 150
 151   TEST_CST (22+3I);
 152   TEST_CST (22-3I);
 153   TEST_CST (-22+3I);
 154   TEST_CST (-22-3I);
 155
 156   TEST_IMAG_INF (,0.FI);
 157   TEST_IMAG_INF (-,-0.FI);
 158
 159 #ifdef __OPTIMIZE__
 160   TEST_REAL_INF( );
 161   TEST_REAL_INF(-);
 162
 163   TEST_IMAG_INF_SIDE_EFFECT (,0.FI);
 164   TEST_IMAG_INF_SIDE_EFFECT (-,-0.FI);
 165
 166   TEST_REAL_INF_SIDE_EFFECT( );
 167   TEST_REAL_INF_SIDE_EFFECT(-);
 168 #endif
 169
 170   return;
 171 }
 172
 173 int main (void)
 174 {
 175   return 0;
 176 }