clang/test/Sema/constant-builtins-fmaximum-num.cpp

   1 // RUN: %clang_cc1 -std=c++17 -fsyntax-only -verify %s
   2 // RUN: %clang_cc1 -std=c++17 -fsyntax-only -verify -fexperimental-new-constant-interpreter %s
   3 // expected-no-diagnostics
   4
   5 constexpr double NaN = __builtin_nan("");
   6 constexpr double SNaN = __builtin_nans("");
   7 constexpr double Inf = __builtin_inf();
   8 constexpr double NegInf = -__builtin_inf();
   9
  10 #define FMAXIMUMNUM_TEST_SIMPLE(T, FUNC)                           \
  11     static_assert(T(6.7890) == FUNC(T(1.2345), T(6.7890))); \
  12     static_assert(T(6.7890) == FUNC(T(6.7890), T(1.2345)));
  13
  14 #define FMAXIMUMNUM_TEST_SNAN(T, FUNC)                          \
  15     static_assert(Inf == FUNC(SNaN, Inf));               \
  16     static_assert(NegInf == FUNC(NegInf, SNaN));         \
  17     static_assert(0.0 == FUNC(SNaN, 0.0));               \
  18     static_assert(-0.0 == FUNC(-0.0, SNaN));             \
  19     static_assert(T(-1.2345) == FUNC(SNaN, T(-1.2345))); \
  20     static_assert(T(1.2345) == FUNC(T(1.2345), SNaN));   \
  21     static_assert(__builtin_isnan(FUNC(SNaN, SNaN)));    \
  22     static_assert(__builtin_isnan(FUNC(NaN, SNaN)));    \
  23     static_assert(!__builtin_issignaling(FUNC(SNaN, SNaN)));  \
  24     static_assert(!__builtin_issignaling(FUNC(NaN, SNaN)));
  25
  26 #define FMAXIMUMNUM_TEST_NAN(T, FUNC)                          \
  27     static_assert(Inf == FUNC(NaN, Inf));               \
  28     static_assert(NegInf == FUNC(NegInf, NaN));         \
  29     static_assert(0.0 == FUNC(NaN, 0.0));               \
  30     static_assert(-0.0 == FUNC(-0.0, NaN));             \
  31     static_assert(T(-1.2345) == FUNC(NaN, T(-1.2345))); \
  32     static_assert(T(1.2345) == FUNC(T(1.2345), NaN));   \
  33     static_assert(__builtin_isnan(FUNC(NaN, NaN)));
  34
  35 #define FMAXIMUMNUM_TEST_INF(T, FUNC)                  \
  36     static_assert(Inf == FUNC(NegInf, Inf));    \
  37     static_assert(Inf == FUNC(Inf, 0.0));       \
  38     static_assert(Inf == FUNC(-0.0, Inf));      \
  39     static_assert(Inf == FUNC(Inf, T(1.2345))); \
  40     static_assert(Inf == FUNC(T(-1.2345), Inf));
  41
  42 #define FMAXIMUMNUM_TEST_NEG_INF(T, FUNC)                         \
  43     static_assert(Inf == FUNC(Inf, NegInf));               \
  44     static_assert(0.0 == FUNC(NegInf, 0.0));               \
  45     static_assert(-0.0 == FUNC(-0.0, NegInf));             \
  46     static_assert(T(-1.2345) == FUNC(NegInf, T(-1.2345))); \
  47     static_assert(T(1.2345) == FUNC(T(1.2345), NegInf));
  48
  49 #define FMAXIMUMNUM_TEST_BOTH_ZERO(T, FUNC)       \
  50     static_assert(__builtin_copysign(1.0, FUNC(0.0, 0.0)) == 1.0);  \
  51     static_assert(__builtin_copysign(1.0, FUNC(-0.0, 0.0)) == 1.0);  \
  52     static_assert(__builtin_copysign(1.0, FUNC(0.0, -0.0)) == 1.0);  \
  53     static_assert(__builtin_copysign(1.0, FUNC(-0.0, -0.0)) == -1.0);
  54
  55 #define LIST_FMAXIMUMNUM_TESTS(T, FUNC) \
  56     FMAXIMUMNUM_TEST_SIMPLE(T, FUNC)    \
  57     FMAXIMUMNUM_TEST_NAN(T, FUNC)       \
  58     FMAXIMUMNUM_TEST_SNAN(T, FUNC)       \
  59     FMAXIMUMNUM_TEST_INF(T, FUNC)       \
  60     FMAXIMUMNUM_TEST_NEG_INF(T, FUNC)   \
  61     FMAXIMUMNUM_TEST_BOTH_ZERO(T, FUNC)
  62
  63 LIST_FMAXIMUMNUM_TESTS(double, __builtin_fmaximum_num)
  64 LIST_FMAXIMUMNUM_TESTS(float, __builtin_fmaximum_numf)
  65 LIST_FMAXIMUMNUM_TESTS((long double), __builtin_fmaximum_numl)
  66 LIST_FMAXIMUMNUM_TESTS(__fp16, __builtin_fmaximum_numf16)
  67 #ifdef __FLOAT128__
  68 LIST_FMAXIMUMNUM_TESTS(__float128, __builtin_fmaximum_numf128)
  69 #endif