lib/3rdparty/stlport/test/unit/cmath_test.cpp

   1 #define _STLP_DO_IMPORT_CSTD_FUNCTIONS
   2
   3 #include <limits>
   4 #include <cmath>
   5 //We also test math functions imported from stdlib.h or
   6 //defined in cstdlib
   7 #include <cstdlib>
   8
   9 #include "math_aux.h"
  10 #include "cppunit/cppunit_proxy.h"
  11
  12 //This test purpose is to check the right import of math.h C symbols
  13 //into the std namespace so we do not use the using namespace std
  14 //specification
  15
  16 //
  17 // TestCase class
  18 //
  19 class CMathTest : public CPPUNIT_NS::TestCase
  20 {
  21   CPPUNIT_TEST_SUITE(CMathTest);
  22 #if defined (STLPORT) && !defined (_STLP_USE_NAMESPACES)
  23   CPPUNIT_IGNORE;
  24 #endif
  25   CPPUNIT_TEST(import_checks);
  26   CPPUNIT_TEST_SUITE_END();
  27
  28   protected:
  29     void import_checks();
  30 };
  31
  32 CPPUNIT_TEST_SUITE_REGISTRATION(CMathTest);
  33
  34 //
  35 // tests implementation
  36 //
  37 void CMathTest::import_checks()
  38 {
  39 #if !defined (STLPORT) || defined (_STLP_USE_NAMESPACES)
  40   int int_val = -1;
  41   long long_val = -1l;
  42   float float_val = -1.0f;
  43   double double_val = -1.0;
  44 #  if !defined (_STLP_NO_LONG_DOUBLE)
  45   long double long_double_val = -1.0l;
  46 #  endif
  47
  48   CPPUNIT_CHECK( are_equals(std::abs(int_val), -int_val) );
  49   CPPUNIT_CHECK( are_equals(std::abs(long_val), -long_val) );
  50   CPPUNIT_CHECK( are_equals(std::labs(long_val), -long_val) );
  51   CPPUNIT_CHECK( are_equals(std::abs(float_val), -float_val) );
  52   CPPUNIT_CHECK( are_equals(std::abs(double_val), -double_val) );
  53 #  if !defined (_STLP_NO_LONG_DOUBLE)
  54   CPPUNIT_CHECK( are_equals(std::abs(long_double_val), -long_double_val) );
  55 #  endif
  56
  57   CPPUNIT_CHECK( are_equals(std::fabs(float_val), -float_val) );
  58   CPPUNIT_CHECK( are_equals(std::fabs(double_val), -double_val) );
  59 #  if !defined (_STLP_NO_LONG_DOUBLE)
  60   CPPUNIT_CHECK( are_equals(std::fabs(long_double_val), -long_double_val) );
  61 #  endif
  62
  63   std::div_t div_res = std::div(3, 2);
  64   CPPUNIT_CHECK( div_res.quot == 1 );
  65   CPPUNIT_CHECK( div_res.rem == 1 );
  66   std::ldiv_t ldiv_res = std::ldiv(3l, 2l);
  67   CPPUNIT_CHECK( ldiv_res.quot == 1l );
  68   CPPUNIT_CHECK( ldiv_res.rem == 1l );
  69   ldiv_res = std::div(3l, 2l);
  70   CPPUNIT_CHECK( ldiv_res.quot == 1l );
  71   CPPUNIT_CHECK( ldiv_res.rem == 1l );
  72
  73   std::srand(2);
  74   int rand_val = std::rand();
  75   CPPUNIT_CHECK( rand_val >= 0 && rand_val <= RAND_MAX );
  76
  77   CPPUNIT_CHECK( are_equals(std::floor(1.5), 1.0) );
  78   CPPUNIT_CHECK( are_equals(std::ceil(1.5), 2.0) );
  79   CPPUNIT_CHECK( are_equals(std::fmod(1.5, 1.0), 0.5) );
  80   CPPUNIT_CHECK( are_equals(std::sqrt(4.0), 2.0) );
  81   CPPUNIT_CHECK( are_equals(std::pow(2.0, 2), 4.0) );
  82   /*
  83    * Uncomment the following to check that it generates an ambiguous call
  84    * as there is no Standard pow(int, int) function only pow(double, int),
  85    * pow(float, int) and some others...
  86    * If it do not generate a compile time error it should at least give
  87    * the good result.
  88    */
  89   //CPPUNIT_CHECK( are_equals(std::pow(10, -2), 0.01) );
  90   CPPUNIT_CHECK( are_equals(std::pow(10.0, -2), 0.01) );
  91   CPPUNIT_CHECK( are_equals(std::exp(0.0), 1.0) );
  92   CPPUNIT_CHECK( are_equals(std::log(std::exp(1.0)), 1.0) );
  93   CPPUNIT_CHECK( are_equals(std::log10(100.0), 2.0) );
  94 #  if !defined (STLPORT) || !defined (_STLP_USING_PLATFORM_SDK_COMPILER) || !defined (_WIN64)
  95   CPPUNIT_CHECK( are_equals(std::modf(100.5, &double_val), 0.5) );
  96   CPPUNIT_CHECK( are_equals(double_val, 100.0) );
  97 #  endif
  98   double_val = std::frexp(8.0, &int_val);
  99   CPPUNIT_CHECK( are_equals(double_val * std::pow(2.0, int_val), 8.0) );
 100   CPPUNIT_CHECK( are_equals(std::ldexp(1.0, 2), 4.0) );
 101   CPPUNIT_CHECK( are_equals(std::cos(std::acos(1.0)), 1.0) );
 102   CPPUNIT_CHECK( are_equals(std::sin(std::asin(1.0)), 1.0) );
 103   CPPUNIT_CHECK( are_equals(std::tan(std::atan(1.0)), 1.0) );
 104   CPPUNIT_CHECK( are_equals(std::tan(std::atan2(1.0, 1.0)), 1.0) );
 105   CPPUNIT_CHECK( are_equals(std::cosh(0.0), 1.0) );
 106   CPPUNIT_CHECK( are_equals(std::sinh(0.0), 0.0) );
 107 #  if !defined (STLPORT) || !defined (_STLP_USING_PLATFORM_SDK_COMPILER) || !defined (_M_AMD64)
 108   CPPUNIT_CHECK( are_equals(std::tanh(0.0), 0.0) );
 109 #  endif
 110
 111   CPPUNIT_CHECK( are_equals(std::floor(1.5f), 1.0f) );
 112   CPPUNIT_CHECK( are_equals(std::ceil(1.5f), 2.0f) );
 113   CPPUNIT_CHECK( are_equals(std::fmod(1.5f, 1.0f), 0.5f) );
 114   CPPUNIT_CHECK( are_equals(std::sqrt(4.0f), 2.0f) );
 115   CPPUNIT_CHECK( are_equals(std::pow(2.0f, 2), 4.0f) );
 116   CPPUNIT_CHECK( are_equals(std::exp(0.0f), 1.0f) );
 117   CPPUNIT_CHECK( are_equals(std::log(std::exp(1.0f)), 1.0f) );
 118   CPPUNIT_CHECK( are_equals(std::log10(100.0f), 2.0f) );
 119 #  if !defined (STLPORT) || !defined (_STLP_USING_PLATFORM_SDK_COMPILER) || !defined (_WIN64)
 120   CPPUNIT_CHECK( are_equals(std::modf(100.5f, &float_val), 0.5f) );
 121   CPPUNIT_CHECK( are_equals(float_val, 100.0f) );
 122 #  endif
 123   float_val = std::frexp(8.0f, &int_val);
 124   CPPUNIT_CHECK( are_equals(float_val * std::pow(2.0f, int_val), 8.0f) );
 125   CPPUNIT_CHECK( are_equals(std::ldexp(1.0f, 2), 4.0f) );
 126   CPPUNIT_CHECK( are_equals(std::cos(std::acos(1.0f)), 1.0f) );
 127   CPPUNIT_CHECK( are_equals(std::sin(std::asin(1.0f)), 1.0f) );
 128   CPPUNIT_CHECK( are_equals(std::tan(std::atan(1.0f)), 1.0f) );
 129   CPPUNIT_CHECK( are_equals(std::tan(std::atan2(1.0f, 1.0f)), 1.0f) );
 130   CPPUNIT_CHECK( are_equals(std::cosh(0.0f), 1.0f) );
 131   CPPUNIT_CHECK( are_equals(std::sinh(0.0f), 0.0f) );
 132 #  if !defined (STLPORT) || !defined (_STLP_USING_PLATFORM_SDK_COMPILER) || !defined (_M_AMD64)
 133   CPPUNIT_CHECK( are_equals(std::tanh(0.0f), 0.0f) );
 134 #  endif
 135
 136 #  if !defined (_STLP_NO_LONG_DOUBLE)
 137   CPPUNIT_CHECK( are_equals(std::floor(1.5l), 1.0l) );
 138   CPPUNIT_CHECK( are_equals(std::ceil(1.5l), 2.0l) );
 139   CPPUNIT_CHECK( are_equals(std::fmod(1.5l, 1.0l), 0.5l) );
 140   CPPUNIT_CHECK( are_equals(std::sqrt(4.0l), 2.0l) );
 141   CPPUNIT_CHECK( are_equals(std::pow(2.0l, 2), 4.0l) );
 142   CPPUNIT_CHECK( are_equals(std::exp(0.0l), 1.0l) );
 143   CPPUNIT_CHECK( are_equals(std::log(std::exp(1.0l)), 1.0l) );
 144   CPPUNIT_CHECK( are_equals(std::log10(100.0l), 2.0l) );
 145 #    if !defined (STLPORT) || !defined (_STLP_USING_PLATFORM_SDK_COMPILER) || !defined (_WIN64)
 146   CPPUNIT_CHECK( are_equals(std::modf(100.5l, &long_double_val), 0.5l) );
 147   CPPUNIT_CHECK( are_equals(long_double_val, 100.0l) );
 148 #    endif
 149   long_double_val = std::frexp(8.0l, &int_val);
 150   CPPUNIT_CHECK( are_equals(long_double_val * std::pow(2.0l, int_val), 8.0l) );
 151   CPPUNIT_CHECK( are_equals(std::ldexp(1.0l, 2), 4.0l) );
 152   CPPUNIT_CHECK( are_equals(std::cos(std::acos(1.0l)), 1.0l) );
 153   CPPUNIT_CHECK( are_equals(std::sin(std::asin(1.0l)), 1.0l) );
 154   CPPUNIT_CHECK( are_equals(std::tan(0.0l), 0.0l) );
 155   CPPUNIT_CHECK( are_equals(std::atan(0.0l), 0.0l) );
 156   CPPUNIT_CHECK( are_equals(std::atan2(0.0l, 1.0l), 0.0l) );
 157   CPPUNIT_CHECK( are_equals(std::cosh(0.0l), 1.0l) );
 158   CPPUNIT_CHECK( are_equals(std::sinh(0.0l), 0.0l) );
 159 #    if !defined (STLPORT) || !defined (_STLP_USING_PLATFORM_SDK_COMPILER) || !defined (_M_AMD64)
 160   CPPUNIT_CHECK( are_equals(std::tanh(0.0l), 0.0l) );
 161 #    endif
 162 #  endif
 163
 164   CPPUNIT_CHECK( are_equals(std::sqrt(std::sqrt(std::sqrt(256.0))), 2.0) );
 165   CPPUNIT_CHECK( are_equals(std::sqrt(std::sqrt(std::sqrt(256.0f))), 2.0f) );
 166 #  if !defined (_STLP_NO_LONG_DOUBLE)
 167   CPPUNIT_CHECK( are_equals(std::sqrt(std::sqrt(std::sqrt(256.0l))), 2.0l) );
 168 #  endif
 169 #endif
 170 }