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00001 #define _STLP_DO_IMPORT_CSTD_FUNCTIONS
00002 
00003 #include <limits>
00004 #include <cmath>
00005 //We also test math functions imported from stdlib.h or
00006 //defined in cstdlib
00007 #include <cstdlib>
00008 
00009 #include "math_aux.h"
00010 #include "cppunit/cppunit_proxy.h"
00011 
00012 //This test purpose is to check the right import of math.h C symbols
00013 //into the std namespace so we do not use the using namespace std
00014 //specification
00015 
00016 //
00017 // TestCase class
00018 //
00019 class CMathTest : public CPPUNIT_NS::TestCase
00020 {
00021   CPPUNIT_TEST_SUITE(CMathTest);
00022 #if defined (STLPORT) && !defined (_STLP_USE_NAMESPACES)
00023   CPPUNIT_IGNORE;
00024 #endif
00025   CPPUNIT_TEST(import_checks);
00026   CPPUNIT_TEST_SUITE_END();
00027 
00028   protected:
00029     void import_checks();
00030 };
00031 
00032 CPPUNIT_TEST_SUITE_REGISTRATION(CMathTest);
00033 
00034 //
00035 // tests implementation
00036 //
00037 void CMathTest::import_checks()
00038 {
00039 #if !defined (STLPORT) || defined (_STLP_USE_NAMESPACES)
00040   int int_val = -1;
00041   long long_val = -1l;
00042   float float_val = -1.0f;
00043   double double_val = -1.0;
00044 #  if !defined (_STLP_NO_LONG_DOUBLE)
00045   long double long_double_val = -1.0l;
00046 #  endif
00047 
00048   CPPUNIT_CHECK( are_equals(std::abs(int_val), -int_val) );
00049   CPPUNIT_CHECK( are_equals(std::abs(long_val), -long_val) );
00050   CPPUNIT_CHECK( are_equals(std::labs(long_val), -long_val) );
00051   CPPUNIT_CHECK( are_equals(std::abs(float_val), -float_val) );
00052   CPPUNIT_CHECK( are_equals(std::abs(double_val), -double_val) );
00053 #  if !defined (_STLP_NO_LONG_DOUBLE)
00054   CPPUNIT_CHECK( are_equals(std::abs(long_double_val), -long_double_val) );
00055 #  endif
00056 
00057   CPPUNIT_CHECK( are_equals(std::fabs(float_val), -float_val) );
00058   CPPUNIT_CHECK( are_equals(std::fabs(double_val), -double_val) );
00059 #  if !defined (_STLP_NO_LONG_DOUBLE)
00060   CPPUNIT_CHECK( are_equals(std::fabs(long_double_val), -long_double_val) );
00061 #  endif
00062 
00063   std::div_t div_res = std::div(3, 2);
00064   CPPUNIT_CHECK( div_res.quot == 1 );
00065   CPPUNIT_CHECK( div_res.rem == 1 );
00066   std::ldiv_t ldiv_res = std::ldiv(3l, 2l);
00067   CPPUNIT_CHECK( ldiv_res.quot == 1l );
00068   CPPUNIT_CHECK( ldiv_res.rem == 1l );
00069   ldiv_res = std::div(3l, 2l);
00070   CPPUNIT_CHECK( ldiv_res.quot == 1l );
00071   CPPUNIT_CHECK( ldiv_res.rem == 1l );
00072 
00073   std::srand(2);
00074   int rand_val = std::rand();
00075   CPPUNIT_CHECK( rand_val >= 0 && rand_val <= RAND_MAX );
00076 
00077   CPPUNIT_CHECK( are_equals(std::floor(1.5), 1.0) );
00078   CPPUNIT_CHECK( are_equals(std::ceil(1.5), 2.0) );
00079   CPPUNIT_CHECK( are_equals(std::fmod(1.5, 1.0), 0.5) );
00080   CPPUNIT_CHECK( are_equals(std::sqrt(4.0), 2.0) );
00081   CPPUNIT_CHECK( are_equals(std::pow(2.0, 2), 4.0) );
00082   /*
00083    * Uncomment the following to check that it generates an ambiguous call
00084    * as there is no Standard pow(int, int) function only pow(double, int),
00085    * pow(float, int) and some others...
00086    * If it do not generate a compile time error it should at least give
00087    * the good result.
00088    */
00089   //CPPUNIT_CHECK( are_equals(std::pow(10, -2), 0.01) );
00090   CPPUNIT_CHECK( are_equals(std::pow(10.0, -2), 0.01) );
00091   CPPUNIT_CHECK( are_equals(std::exp(0.0), 1.0) );
00092   CPPUNIT_CHECK( are_equals(std::log(std::exp(1.0)), 1.0) );
00093   CPPUNIT_CHECK( are_equals(std::log10(100.0), 2.0) );
00094 #  if !defined (STLPORT) || !defined (_STLP_USING_PLATFORM_SDK_COMPILER) || !defined (_WIN64)
00095   CPPUNIT_CHECK( are_equals(std::modf(100.5, &double_val), 0.5) );
00096   CPPUNIT_CHECK( are_equals(double_val, 100.0) );
00097 #  endif
00098   double_val = std::frexp(8.0, &int_val);
00099   CPPUNIT_CHECK( are_equals(double_val * std::pow(2.0, int_val), 8.0) );
00100   CPPUNIT_CHECK( are_equals(std::ldexp(1.0, 2), 4.0) );
00101   CPPUNIT_CHECK( are_equals(std::cos(std::acos(1.0)), 1.0) );
00102   CPPUNIT_CHECK( are_equals(std::sin(std::asin(1.0)), 1.0) );
00103   CPPUNIT_CHECK( are_equals(std::tan(std::atan(1.0)), 1.0) );
00104   CPPUNIT_CHECK( are_equals(std::tan(std::atan2(1.0, 1.0)), 1.0) );
00105   CPPUNIT_CHECK( are_equals(std::cosh(0.0), 1.0) );
00106   CPPUNIT_CHECK( are_equals(std::sinh(0.0), 0.0) );
00107 #  if !defined (STLPORT) || !defined (_STLP_USING_PLATFORM_SDK_COMPILER) || !defined (_M_AMD64)
00108   CPPUNIT_CHECK( are_equals(std::tanh(0.0), 0.0) );
00109 #  endif
00110 
00111   CPPUNIT_CHECK( are_equals(std::floor(1.5f), 1.0f) );
00112   CPPUNIT_CHECK( are_equals(std::ceil(1.5f), 2.0f) );
00113   CPPUNIT_CHECK( are_equals(std::fmod(1.5f, 1.0f), 0.5f) );
00114   CPPUNIT_CHECK( are_equals(std::sqrt(4.0f), 2.0f) );
00115   CPPUNIT_CHECK( are_equals(std::pow(2.0f, 2), 4.0f) );
00116   CPPUNIT_CHECK( are_equals(std::exp(0.0f), 1.0f) );
00117   CPPUNIT_CHECK( are_equals(std::log(std::exp(1.0f)), 1.0f) );
00118   CPPUNIT_CHECK( are_equals(std::log10(100.0f), 2.0f) );
00119 #  if !defined (STLPORT) || !defined (_STLP_USING_PLATFORM_SDK_COMPILER) || !defined (_WIN64)
00120   CPPUNIT_CHECK( are_equals(std::modf(100.5f, &float_val), 0.5f) );
00121   CPPUNIT_CHECK( are_equals(float_val, 100.0f) );
00122 #  endif
00123   float_val = std::frexp(8.0f, &int_val);
00124   CPPUNIT_CHECK( are_equals(float_val * std::pow(2.0f, int_val), 8.0f) );
00125   CPPUNIT_CHECK( are_equals(std::ldexp(1.0f, 2), 4.0f) );
00126   CPPUNIT_CHECK( are_equals(std::cos(std::acos(1.0f)), 1.0f) );
00127   CPPUNIT_CHECK( are_equals(std::sin(std::asin(1.0f)), 1.0f) );
00128   CPPUNIT_CHECK( are_equals(std::tan(std::atan(1.0f)), 1.0f) );
00129   CPPUNIT_CHECK( are_equals(std::tan(std::atan2(1.0f, 1.0f)), 1.0f) );
00130   CPPUNIT_CHECK( are_equals(std::cosh(0.0f), 1.0f) );
00131   CPPUNIT_CHECK( are_equals(std::sinh(0.0f), 0.0f) );
00132 #  if !defined (STLPORT) || !defined (_STLP_USING_PLATFORM_SDK_COMPILER) || !defined (_M_AMD64)
00133   CPPUNIT_CHECK( are_equals(std::tanh(0.0f), 0.0f) );
00134 #  endif
00135 
00136 #  if !defined (_STLP_NO_LONG_DOUBLE)
00137   CPPUNIT_CHECK( are_equals(std::floor(1.5l), 1.0l) );
00138   CPPUNIT_CHECK( are_equals(std::ceil(1.5l), 2.0l) );
00139   CPPUNIT_CHECK( are_equals(std::fmod(1.5l, 1.0l), 0.5l) );
00140   CPPUNIT_CHECK( are_equals(std::sqrt(4.0l), 2.0l) );
00141   CPPUNIT_CHECK( are_equals(std::pow(2.0l, 2), 4.0l) );
00142   CPPUNIT_CHECK( are_equals(std::exp(0.0l), 1.0l) );
00143   CPPUNIT_CHECK( are_equals(std::log(std::exp(1.0l)), 1.0l) );
00144   CPPUNIT_CHECK( are_equals(std::log10(100.0l), 2.0l) );
00145 #    if !defined (STLPORT) || !defined (_STLP_USING_PLATFORM_SDK_COMPILER) || !defined (_WIN64)
00146   CPPUNIT_CHECK( are_equals(std::modf(100.5l, &long_double_val), 0.5l) );
00147   CPPUNIT_CHECK( are_equals(long_double_val, 100.0l) );
00148 #    endif
00149   long_double_val = std::frexp(8.0l, &int_val);
00150   CPPUNIT_CHECK( are_equals(long_double_val * std::pow(2.0l, int_val), 8.0l) );
00151   CPPUNIT_CHECK( are_equals(std::ldexp(1.0l, 2), 4.0l) );
00152   CPPUNIT_CHECK( are_equals(std::cos(std::acos(1.0l)), 1.0l) );
00153   CPPUNIT_CHECK( are_equals(std::sin(std::asin(1.0l)), 1.0l) );
00154   CPPUNIT_CHECK( are_equals(std::tan(0.0l), 0.0l) );
00155   CPPUNIT_CHECK( are_equals(std::atan(0.0l), 0.0l) );
00156   CPPUNIT_CHECK( are_equals(std::atan2(0.0l, 1.0l), 0.0l) );
00157   CPPUNIT_CHECK( are_equals(std::cosh(0.0l), 1.0l) );
00158   CPPUNIT_CHECK( are_equals(std::sinh(0.0l), 0.0l) );
00159 #    if !defined (STLPORT) || !defined (_STLP_USING_PLATFORM_SDK_COMPILER) || !defined (_M_AMD64)
00160   CPPUNIT_CHECK( are_equals(std::tanh(0.0l), 0.0l) );
00161 #    endif
00162 #  endif
00163 
00164   CPPUNIT_CHECK( are_equals(std::sqrt(std::sqrt(std::sqrt(256.0))), 2.0) );
00165   CPPUNIT_CHECK( are_equals(std::sqrt(std::sqrt(std::sqrt(256.0f))), 2.0f) );
00166 #  if !defined (_STLP_NO_LONG_DOUBLE)
00167   CPPUNIT_CHECK( are_equals(std::sqrt(std::sqrt(std::sqrt(256.0l))), 2.0l) );
00168 #  endif
00169 #endif
00170 }
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