gcc/testsuite/gcc.dg/torture/builtin-math-2.c

   1 /* Copyright (C) 2006, 2007  Free Software Foundation.
   2
   3    Test things that should block GCC from optimizing compile-time
   4    constants passed to a builtin transcendental function.
   5
   6    Origin: Kaveh R. Ghazi,  October 22, 2006.  */
   7
   8 /* { dg-do compile } */
   9 /* { dg-require-effective-target inf } */
  10 /* { dg-options "-fdump-tree-original" } */
  11
  12 extern void foof (float);
  13 extern void foo (double);
  14 extern void fool (long double);
  15
  16 #define TESTIT(FUNC, ARG) do { \
  17   foof (__builtin_##FUNC##f (ARG##F)); \
  18   foo (__builtin_##FUNC (ARG)); \
  19   fool (__builtin_##FUNC##l (ARG##L)); \
  20 } while (0)
  21
  22 #define TESTIT2(FUNC, ARG1, ARG2) do { \
  23   foof (__builtin_##FUNC##f (ARG1##F, ARG2##F)); \
  24   foo (__builtin_##FUNC (ARG1, ARG2)); \
  25   fool (__builtin_##FUNC##l (ARG1##L, ARG2##L)); \
  26 } while (0)
  27
  28 #define TESTIT2_I1(FUNC, ARG1, ARG2) do { \
  29   foof (__builtin_##FUNC##f (ARG1, ARG2##F)); \
  30   foo (__builtin_##FUNC (ARG1, ARG2)); \
  31   fool (__builtin_##FUNC##l (ARG1, ARG2##L)); \
  32 } while (0)
  33
  34 #define TESTIT2_I2ALL(FUNC, ARGF, MAXF, ARGD, MAXD, ARGLD, MAXLD) do { \
  35   foof (__builtin_##FUNC##f (ARGF, MAXF)); \
  36   foo (__builtin_##FUNC (ARGD, MAXD)); \
  37   fool (__builtin_##FUNC##l (ARGLD, MAXLD)); \
  38 } while (0)
  39
  40 #define TESTIT2_I2(FUNC, ARG1, ARG2) do { \
  41   foof (__builtin_##FUNC##f (ARG1##F, ARG2)); \
  42   foo (__builtin_##FUNC (ARG1, ARG2)); \
  43   fool (__builtin_##FUNC##l (ARG1##L, ARG2)); \
  44 } while (0)
  45
  46 #define TESTIT_REMQUO(ARG1, ARG2) do { \
  47   int quo; \
  48   foof (__builtin_remquof (ARG1##F, ARG2##F, &quo)); \
  49   foo (__builtin_remquo (ARG1, ARG2, &quo)); \
  50   fool (__builtin_remquol (ARG1##L, ARG2##L, &quo)); \
  51 } while (0)
  52
  53 #define TESTIT_REENT(FUNC,ARG1) do { \
  54   int sg; \
  55   foof (__builtin_##FUNC##f_r (ARG1##F, &sg)); \
  56   foo (__builtin_##FUNC##_r (ARG1, &sg)); \
  57   fool (__builtin_##FUNC##l_r (ARG1##L, &sg)); \
  58 } while (0)
  59
  60 void bar()
  61 {
  62   /* An argument of NaN is not evaluated at compile-time.  */
  63   foof (__builtin_exp2f (__builtin_nanf("")));
  64   foo (__builtin_exp2 (__builtin_nan("")));
  65   fool (__builtin_exp2l (__builtin_nanl("")));
  66
  67   /* An argument of Inf/-Inf is not evaluated at compile-time.  */
  68   foof (__builtin_exp2f (__builtin_inff()));
  69   foo (__builtin_exp2 (__builtin_inf()));
  70   fool (__builtin_exp2l (__builtin_infl()));
  71   foof (__builtin_exp2f (-__builtin_inff()));
  72   foo (__builtin_exp2 (-__builtin_inf()));
  73   fool (__builtin_exp2l (-__builtin_infl()));
  74
  75   /* Result overflows MPFR, which in version 2.2.x has 30 exponent bits.  */
  76   TESTIT (exp2, 0x1p50);
  77   /* Result underflows MPFR, which in version 2.2.x has 30 exponent bits.  */
  78   TESTIT (exp2, -0x1p50);
  79
  80   /* Result overflows GCC's REAL_VALUE_TYPE, which has 26 exponent bits.  */
  81   TESTIT (exp2, 0x1p28);
  82   /* Result underflows GCC's REAL_VALUE_TYPE, which has 26 exponent bits.  */
  83   TESTIT (exp2, -0x1p28);
  84
  85   /* Result overflows (even an extended) C double's mode.  */
  86   TESTIT (exp2, 0x1p24);
  87   /* Result underflows (even an extended) C double's mode.  */
  88   TESTIT (exp2, -0x1p24);
  89
  90   /* Ensure that normal arguments/results are folded.  */
  91   TESTIT (exp2, 1.5);
  92   TESTIT (exp2, -1.5);
  93
  94   /* The asin arg must be [-1 ... 1] inclusive.  */
  95   TESTIT (asin, -1.5);
  96   TESTIT (asin, 1.5);
  97
  98   /* The acos arg must be [-1 ... 1] inclusive.  */
  99   TESTIT (acos, -1.5);
 100   TESTIT (acos, 1.5);
 101
 102   /* The acosh arg must be [1 ... Inf] inclusive.  */
 103   TESTIT (acosh, 0.5);
 104
 105   /* The atanh arg must be [-1 ... 1] EXclusive.  */
 106   TESTIT (atanh, -1.0);
 107   TESTIT (atanh, 1.0);
 108
 109   /* The log* arg must be [0 ... Inf] EXclusive.  */
 110   TESTIT (log, -1.0);
 111   TESTIT (log, 0.0);
 112   TESTIT (log, -0.0);
 113
 114   TESTIT (log2, -1.0);
 115   TESTIT (log2, 0.0);
 116   TESTIT (log2, -0.0);
 117
 118   TESTIT (log10, -1.0);
 119   TESTIT (log10, 0.0);
 120   TESTIT (log10, -0.0);
 121
 122   /* The log1p arg must be [-1 ... Inf] EXclusive.  */
 123   TESTIT (log1p, -2.0);
 124   TESTIT (log1p, -1.0);
 125
 126   /* The tgamma arg errors with zero or negative integers.  */
 127   TESTIT (tgamma, 0.0);
 128   TESTIT (tgamma, -0.0);
 129   TESTIT (tgamma, -1.0);
 130   TESTIT (tgamma, -2.0);
 131   TESTIT (tgamma, -3.0);
 132
 133   /* An argument of NaN is not evaluated at compile-time.  */
 134   foof (__builtin_powf (__builtin_nanf(""), 2.5F));
 135   foo (__builtin_pow (__builtin_nan(""), 2.5));
 136   fool (__builtin_powl (__builtin_nanl(""), 2.5L));
 137   foof (__builtin_powf (2.5F, __builtin_nanf("")));
 138   foo (__builtin_pow (2.5, __builtin_nan("")));
 139   fool (__builtin_powl (2.5L, __builtin_nanl("")));
 140
 141   /* An argument of Inf/-Inf is not evaluated at compile-time.  */
 142   foof (__builtin_powf (__builtin_inff(), 2.5F));
 143   foo (__builtin_pow (__builtin_inf(), 2.5));
 144   fool (__builtin_powl (__builtin_infl(), 2.5L));
 145   foof (__builtin_powf (-__builtin_inff(), 2.5F));
 146   foo (__builtin_pow (-__builtin_inf(), 2.5));
 147   fool (__builtin_powl (-__builtin_infl(), 2.5L));
 148   foof (__builtin_powf (2.5F, __builtin_inff()));
 149   foo (__builtin_pow (2.5, __builtin_inf()));
 150   fool (__builtin_powl (2.5L, __builtin_infl()));
 151   foof (__builtin_powf (2.5F, -__builtin_inff()));
 152   foo (__builtin_pow (2.5, -__builtin_inf()));
 153   fool (__builtin_powl (2.5L, -__builtin_infl()));
 154
 155   /* Check for Inv/NaN return values.  */
 156   TESTIT2 (pow, -0.0, -4.5); /* Returns Inf */
 157   TESTIT2 (pow, 0.0, -4.5); /* Returns Inf */
 158   TESTIT2 (pow, -3.0, -4.5); /* Returns NaN */
 159
 160   /* Check for overflow/underflow.  */
 161   foof (__builtin_powf (__FLT_MAX__, 3.5F));
 162   foo (__builtin_pow (__DBL_MAX__, 3.5));
 163   fool (__builtin_powl (__LDBL_MAX__, 3.5L));
 164   TESTIT2 (pow, 2.0, 0x1p50);
 165   foof (__builtin_powf (__FLT_MAX__, -3.5F));
 166   foo (__builtin_pow (__DBL_MAX__, -3.5));
 167   fool (__builtin_powl (__LDBL_MAX__, -3.5L));
 168   TESTIT2 (pow, 2.0, -0x1p50);
 169
 170   /* The sqrt arg must be [0 ... Inf] inclusive.  */
 171   TESTIT (sqrt, -0.5);
 172   TESTIT (sqrt, -0.0);
 173   TESTIT (sqrt, 0.0);
 174
 175   /* Check for overflow/underflow.  */
 176
 177   /* These adjustments are too big.  */
 178 #define FLT_EXP_ADJ (2*(__FLT_MAX_EXP__-__FLT_MIN_EXP__)+1)
 179 #define DBL_EXP_ADJ (2*(__DBL_MAX_EXP__-__DBL_MIN_EXP__)+1)
 180 #define LDBL_EXP_ADJ (2*(__LDBL_MAX_EXP__-__LDBL_MIN_EXP__)+1)
 181
 182   TESTIT2_I2 (ldexp, 1.0, __INT_MAX__);
 183   TESTIT2_I2 (ldexp, 1.0, -__INT_MAX__-1);
 184   TESTIT2_I2 (ldexp, -1.0, __INT_MAX__);
 185   TESTIT2_I2 (ldexp, -1.0, -__INT_MAX__-1);
 186   TESTIT2_I2ALL (ldexp, __FLT_MIN__, FLT_EXP_ADJ, __DBL_MIN__,
 187                  DBL_EXP_ADJ, __LDBL_MIN__, LDBL_EXP_ADJ);
 188   TESTIT2_I2ALL (ldexp, __FLT_MAX__, -FLT_EXP_ADJ, __DBL_MAX__,
 189                  -DBL_EXP_ADJ, __LDBL_MAX__, -LDBL_EXP_ADJ);
 190   TESTIT2_I2ALL (ldexp, __FLT_MIN__, __FLT_MIN_EXP__, __DBL_MIN__,
 191                  __DBL_MIN_EXP__, __LDBL_MIN__, __LDBL_MIN_EXP__);
 192   TESTIT2_I2ALL (ldexp, __FLT_MAX__, __FLT_MAX_EXP__, __DBL_MAX__,
 193                  __DBL_MAX_EXP__, __LDBL_MAX__, __LDBL_MAX_EXP__);
 194
 195   TESTIT2_I2 (scalbn, 1.0, __INT_MAX__);
 196   TESTIT2_I2 (scalbn, 1.0, -__INT_MAX__-1);
 197   TESTIT2_I2 (scalbn, -1.0, __INT_MAX__);
 198   TESTIT2_I2 (scalbn, -1.0, -__INT_MAX__-1);
 199   TESTIT2_I2ALL (scalbn, __FLT_MIN__, FLT_EXP_ADJ, __DBL_MIN__,
 200                  DBL_EXP_ADJ, __LDBL_MIN__, LDBL_EXP_ADJ);
 201   TESTIT2_I2ALL (scalbn, __FLT_MAX__, -FLT_EXP_ADJ, __DBL_MAX__,
 202                  -DBL_EXP_ADJ, __LDBL_MAX__, -LDBL_EXP_ADJ);
 203   TESTIT2_I2ALL (scalbn, __FLT_MIN__, __FLT_MIN_EXP__, __DBL_MIN__,
 204                  __DBL_MIN_EXP__, __LDBL_MIN__, __LDBL_MIN_EXP__);
 205   TESTIT2_I2ALL (scalbn, __FLT_MAX__, __FLT_MAX_EXP__, __DBL_MAX__,
 206                  __DBL_MAX_EXP__, __LDBL_MAX__, __LDBL_MAX_EXP__);
 207
 208   TESTIT2_I2 (scalbln, 1.0, __LONG_MAX__);
 209   TESTIT2_I2 (scalbln, 1.0, -__LONG_MAX__-1);
 210   TESTIT2_I2 (scalbln, -1.0, __LONG_MAX__);
 211   TESTIT2_I2 (scalbln, -1.0, -__LONG_MAX__-1);
 212   TESTIT2_I2ALL (scalbln, __FLT_MIN__, FLT_EXP_ADJ, __DBL_MIN__,
 213                  DBL_EXP_ADJ, __LDBL_MIN__, LDBL_EXP_ADJ);
 214   TESTIT2_I2ALL (scalbln, __FLT_MAX__, -FLT_EXP_ADJ, __DBL_MAX__,
 215                  -DBL_EXP_ADJ, __LDBL_MAX__, -LDBL_EXP_ADJ);
 216   TESTIT2_I2ALL (scalbln, __FLT_MIN__, __FLT_MIN_EXP__, __DBL_MIN__,
 217                  __DBL_MIN_EXP__, __LDBL_MIN__, __LDBL_MIN_EXP__);
 218   TESTIT2_I2ALL (scalbln, __FLT_MAX__, __FLT_MAX_EXP__, __DBL_MAX__,
 219                  __DBL_MAX_EXP__, __LDBL_MAX__, __LDBL_MAX_EXP__);
 220
 221   TESTIT (logb, 0.0);
 222   TESTIT (logb, -0.0);
 223
 224   TESTIT (ilogb, 0.0);
 225   TESTIT (ilogb, -0.0);
 226
 227   foof (__builtin_ilogbf (__builtin_inff()));
 228   foo (__builtin_ilogb (__builtin_inf()));
 229   fool (__builtin_ilogbl (__builtin_infl()));
 230   foof (__builtin_ilogbf (-__builtin_inff()));
 231   foo (__builtin_ilogb (-__builtin_inf()));
 232   fool (__builtin_ilogbl (-__builtin_infl()));
 233
 234   foof (__builtin_ilogbf (__builtin_nanf("")));
 235   foo (__builtin_ilogb (__builtin_nan("")));
 236   fool (__builtin_ilogbl (__builtin_nanl("")));
 237   foof (__builtin_ilogbf (-__builtin_nanf("")));
 238   foo (__builtin_ilogb (-__builtin_nan("")));
 239   fool (__builtin_ilogbl (-__builtin_nanl("")));
 240
 241   /* The y* arg must be [0 ... Inf] EXclusive.  */
 242   TESTIT (y0, -1.0);
 243   TESTIT (y0, 0.0);
 244   TESTIT (y0, -0.0);
 245
 246   TESTIT (y1, -1.0);
 247   TESTIT (y1, 0.0);
 248   TESTIT (y1, -0.0);
 249
 250   TESTIT2_I1 (yn, 2, -1.0);
 251   TESTIT2_I1 (yn, 2, 0.0);
 252   TESTIT2_I1 (yn, 2, -0.0);
 253
 254   TESTIT2_I1 (yn, -3, -1.0);
 255   TESTIT2_I1 (yn, -3, 0.0);
 256   TESTIT2_I1 (yn, -3, -0.0);
 257
 258   /* The second argument of remquo/remainder/drem must not be 0.  */
 259   TESTIT_REMQUO (1.0, 0.0);
 260   TESTIT_REMQUO (1.0, -0.0);
 261   TESTIT2 (remainder, 1.0, 0.0);
 262   TESTIT2 (remainder, 1.0, -0.0);
 263   TESTIT2 (drem, 1.0, 0.0);
 264   TESTIT2 (drem, 1.0, -0.0);
 265
 266   /* The argument to lgamma* cannot be zero or a negative integer.  */
 267   TESTIT_REENT (lgamma, -4.0); /* lgamma_r */
 268   TESTIT_REENT (lgamma, -3.0); /* lgamma_r */
 269   TESTIT_REENT (lgamma, -2.0); /* lgamma_r */
 270   TESTIT_REENT (lgamma, -1.0); /* lgamma_r */
 271   TESTIT_REENT (lgamma, -0.0); /* lgamma_r */
 272   TESTIT_REENT (lgamma, 0.0); /* lgamma_r */
 273
 274   TESTIT_REENT (gamma, -4.0); /* gamma_r */
 275   TESTIT_REENT (gamma, -3.0); /* gamma_r */
 276   TESTIT_REENT (gamma, -2.0); /* gamma_r */
 277   TESTIT_REENT (gamma, -1.0); /* gamma_r */
 278   TESTIT_REENT (gamma, -0.0); /* gamma_r */
 279   TESTIT_REENT (gamma, 0.0); /* gamma_r */
 280 }
 281
 282 /* { dg-final { scan-tree-dump-times "exp2 " 9 "original" } } */
 283 /* { dg-final { scan-tree-dump-times "exp2f" 9 "original" } } */
 284 /* { dg-final { scan-tree-dump-times "exp2l" 9 "original" } } */
 285 /* { dg-final { scan-tree-dump-times "asin " 2 "original" } } */
 286 /* { dg-final { scan-tree-dump-times "asinf" 2 "original" } } */
 287 /* { dg-final { scan-tree-dump-times "asinl" 2 "original" } } */
 288 /* { dg-final { scan-tree-dump-times "acos " 2 "original" } } */
 289 /* { dg-final { scan-tree-dump-times "acosf" 2 "original" } } */
 290 /* { dg-final { scan-tree-dump-times "acosl" 2 "original" } } */
 291 /* { dg-final { scan-tree-dump-times "acosh " 1 "original" } } */
 292 /* { dg-final { scan-tree-dump-times "acoshf" 1 "original" } } */
 293 /* { dg-final { scan-tree-dump-times "acoshl" 1 "original" } } */
 294 /* { dg-final { scan-tree-dump-times "atanh " 2 "original" } } */
 295 /* { dg-final { scan-tree-dump-times "atanhf" 2 "original" } } */
 296 /* { dg-final { scan-tree-dump-times "atanhl" 2 "original" } } */
 297 /* { dg-final { scan-tree-dump-times "log " 3 "original" } } */
 298 /* { dg-final { scan-tree-dump-times "logf" 3 "original" } } */
 299 /* { dg-final { scan-tree-dump-times "logl" 3 "original" } } */
 300 /* { dg-final { scan-tree-dump-times "log2 " 3 "original" } } */
 301 /* { dg-final { scan-tree-dump-times "log2f" 3 "original" } } */
 302 /* { dg-final { scan-tree-dump-times "log2l" 3 "original" } } */
 303 /* { dg-final { scan-tree-dump-times "log10 " 3 "original" } } */
 304 /* { dg-final { scan-tree-dump-times "log10f" 3 "original" } } */
 305 /* { dg-final { scan-tree-dump-times "log10l" 3 "original" } } */
 306 /* { dg-final { scan-tree-dump-times "log1p " 2 "original" } } */
 307 /* { dg-final { scan-tree-dump-times "log1pf" 2 "original" } } */
 308 /* { dg-final { scan-tree-dump-times "log1pl" 2 "original" } } */
 309 /* { dg-final { scan-tree-dump-times "tgamma " 5 "original" } } */
 310 /* { dg-final { scan-tree-dump-times "tgammaf" 5 "original" } } */
 311 /* { dg-final { scan-tree-dump-times "tgammal" 5 "original" } } */
 312 /* { dg-final { scan-tree-dump-times "pow " 13 "original" } } */
 313 /* { dg-final { scan-tree-dump-times "powf" 13 "original" } } */
 314 /* { dg-final { scan-tree-dump-times "powl" 13 "original" } } */
 315 /* { dg-final { scan-tree-dump-times "sqrt " 1 "original" } } */
 316 /* { dg-final { scan-tree-dump-times "sqrtf" 1 "original" } } */
 317 /* { dg-final { scan-tree-dump-times "sqrtl" 1 "original" } } */
 318 /* { dg-final { scan-tree-dump-times "ldexp " 8 "original" } } */
 319 /* { dg-final { scan-tree-dump-times "ldexpf" 8 "original" } } */
 320 /* { dg-final { scan-tree-dump-times "ldexpl" 8 "original" } } */
 321 /* { dg-final { scan-tree-dump-times "scalbn " 8 "original" } } */
 322 /* { dg-final { scan-tree-dump-times "scalbnf" 8 "original" } } */
 323 /* { dg-final { scan-tree-dump-times "scalbnl" 8 "original" } } */
 324 /* { dg-final { scan-tree-dump-times "scalbln " 8 "original" } } */
 325 /* { dg-final { scan-tree-dump-times "scalblnf" 8 "original" } } */
 326 /* { dg-final { scan-tree-dump-times "scalblnl" 8 "original" } } */
 327 /* { dg-final { scan-tree-dump-times "_logb " 2 "original" } } */
 328 /* { dg-final { scan-tree-dump-times "_logbf" 2 "original" } } */
 329 /* { dg-final { scan-tree-dump-times "_logbl" 2 "original" } } */
 330 /* { dg-final { scan-tree-dump-times "ilogb " 6 "original" } } */
 331 /* { dg-final { scan-tree-dump-times "ilogbf" 6 "original" } } */
 332 /* { dg-final { scan-tree-dump-times "ilogbl" 6 "original" } } */
 333 /* { dg-final { scan-tree-dump-times "y0 " 3 "original" } } */
 334 /* { dg-final { scan-tree-dump-times "y0f" 3 "original" } } */
 335 /* { dg-final { scan-tree-dump-times "y0l" 3 "original" } } */
 336 /* { dg-final { scan-tree-dump-times "y1 " 3 "original" } } */
 337 /* { dg-final { scan-tree-dump-times "y1f" 3 "original" } } */
 338 /* { dg-final { scan-tree-dump-times "y1l" 3 "original" } } */
 339 /* { dg-final { scan-tree-dump-times "yn " 6 "original" } } */
 340 /* { dg-final { scan-tree-dump-times "ynf" 6 "original" } } */
 341 /* { dg-final { scan-tree-dump-times "ynl" 6 "original" } } */
 342 /* { dg-final { scan-tree-dump-times "remquo " 2 "original" } } */
 343 /* { dg-final { scan-tree-dump-times "remquof" 2 "original" } } */
 344 /* { dg-final { scan-tree-dump-times "remquol" 2 "original" } } */
 345 /* { dg-final { scan-tree-dump-times "remainder " 2 "original" } } */
 346 /* { dg-final { scan-tree-dump-times "remainderf" 2 "original" } } */
 347 /* { dg-final { scan-tree-dump-times "remainderl" 2 "original" } } */
 348 /* { dg-final { scan-tree-dump-times "drem " 2 "original" } } */
 349 /* { dg-final { scan-tree-dump-times "dremf" 2 "original" } } */
 350 /* { dg-final { scan-tree-dump-times "dreml" 2 "original" } } */
 351 /* { dg-final { scan-tree-dump-times "lgamma_r " 6 "original" } } */
 352 /* { dg-final { scan-tree-dump-times "lgammaf_r" 6 "original" } } */
 353 /* { dg-final { scan-tree-dump-times "lgammal_r" 6 "original" } } */
 354 /* { dg-final { scan-tree-dump-times "_gamma_r " 6 "original" } } */
 355 /* { dg-final { scan-tree-dump-times "_gammaf_r" 6 "original" } } */
 356 /* { dg-final { scan-tree-dump-times "_gammal_r" 6 "original" } } */