assimp/test/unit/utFastAtof.cpp

/*
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Open Asset Import Library (assimp)
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All rights reserved.

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* Redistributions in binary form must reproduce the above
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*/
#include "UnitTestPCH.h"

#include <assimp/fast_atof.h>

namespace {

template <typename Real>
bool IsNan(Real x) {
    return x != x;
}

template <typename Real>
bool IsInf(Real x) {
    return std::abs(x) == std::numeric_limits<Real>::infinity();
}

} // Namespace

class FastAtofTest : public ::testing::Test
{
protected:
    template <typename Real, typename AtofFunc>
    static void RunTest(AtofFunc atof_func)
    {
        const Real kEps = 1e-5f;

#define TEST_CASE(NUM) EXPECT_NEAR(static_cast<Real>(NUM), atof_func(#NUM), kEps)
#define TEST_CASE_NAN(NUM) EXPECT_TRUE(IsNan(atof_func(#NUM)))
#define TEST_CASE_INF(NUM) EXPECT_TRUE(IsInf(atof_func(#NUM)))

        TEST_CASE(0);
        TEST_CASE(1.354);
        TEST_CASE(1054E-3);
        TEST_CASE(-1054E-3);
        TEST_CASE(-10.54E30);
        TEST_CASE(-345554.54e-5);
        TEST_CASE(-34555.534954e-5);
        TEST_CASE(-34555.534954e-5);
        TEST_CASE(549067);
        TEST_CASE(567);
        TEST_CASE(446);
        TEST_CASE(7);
        TEST_CASE(73);
        TEST_CASE(256);
        TEST_CASE(5676);
        TEST_CASE(3);
        TEST_CASE(738);
        TEST_CASE(684);
        TEST_CASE(26);
        TEST_CASE(673.678e-56);
        TEST_CASE(53);
        TEST_CASE(67);
        TEST_CASE(684);
        TEST_CASE(-5437E24);
        TEST_CASE(8);
        TEST_CASE(84);
        TEST_CASE(3);
        TEST_CASE(56733.68);
        TEST_CASE(786);
        TEST_CASE(6478);
        TEST_CASE(34563.65683598734);
        TEST_CASE(5673);
        TEST_CASE(784e-3);
        TEST_CASE(8678);
        TEST_CASE(46784);
        TEST_CASE(-54.0888e-6);
        TEST_CASE(100000e10);
        TEST_CASE(1e-307);
        TEST_CASE(0.000001e-301);
        TEST_CASE(0.0000001e-300);
        TEST_CASE(0.00000001e-299);
        TEST_CASE(1000000e-313);
        TEST_CASE(10000000e-314);
        TEST_CASE(100000000e-315);
        TEST_CASE(12.345);
        TEST_CASE(12.345e19);
        TEST_CASE(-.1e+9);
        TEST_CASE(.125);
        TEST_CASE(1e20);
        TEST_CASE(0e-19);
        TEST_CASE(400012);
        TEST_CASE(5.9e-76);
        TEST_CASE_INF(inf);
        TEST_CASE_INF(inf);
        TEST_CASE_INF(infinity);
        TEST_CASE_INF(Inf);
        TEST_CASE_INF(-Inf);
        TEST_CASE_INF(+InFiNiTy);
        TEST_CASE_NAN(NAN);
        TEST_CASE_NAN(NaN);
        TEST_CASE_NAN(nan);
        EXPECT_EQ(static_cast<Real>(6), atof_func("006"));
        EXPECT_EQ(static_cast<Real>(5.3), atof_func("5.300  "));

        /* Failing Cases:
        EXPECT_EQ(static_cast<Real>(6), atof_func("  006"));
        EXPECT_EQ(static_cast<Real>(5.3), atof_func("  5.300  "));
        TEST_CASE(-10.54E45);
        TEST_CASE(0x0A);
        TEST_CASE(0xA0);
        TEST_CASE(0x1p1023);
        TEST_CASE(0x1000p1011);
        TEST_CASE(0x1p1020);
        TEST_CASE(0x0.00001p1040);
        TEST_CASE(0x1p-1021);
        TEST_CASE(0x1000p-1033);
        TEST_CASE(0x10000p-1037);
        TEST_CASE(0x0.001p-1009);
        TEST_CASE(0x0.0001p-1005);
        TEST_CASE(0x1.4p+3);
        TEST_CASE(0xAp0);
        TEST_CASE(0x0Ap0);
        TEST_CASE(0x0.A0p8);
        TEST_CASE(0x0.50p9);
        TEST_CASE(0x0.28p10);
        TEST_CASE(0x0.14p11);
        TEST_CASE(0x0.0A0p12);
        TEST_CASE(0x0.050p13);
        TEST_CASE(0x0.028p14);
        TEST_CASE(0x0.014p15);
        TEST_CASE(0x00.00A0p16);
        TEST_CASE(0x00.0050p17);
        TEST_CASE(0x00.0028p18);
        TEST_CASE(0x00.0014p19);
        TEST_CASE(0x1p-1023);
        TEST_CASE(0x0.8p-1022);
        TEST_CASE(0x80000Ap-23);
        TEST_CASE(0x100000000000008p0);
        TEST_CASE(0x100000000000008.p0);
        TEST_CASE(0x100000000000008.00p0);
        TEST_CASE(0x10000000000000800p0);
        TEST_CASE(0x10000000000000801p0)
        */

#undef TEST_CASE
#undef TEST_CASE_NAN
#undef TEST_CASE_INF
    }
};

struct FastAtofWrapper {
    ai_real operator()(const char* str) { return Assimp::fast_atof(str); }
};

TEST_F(FastAtofTest, FastAtof)
{
    RunTest<ai_real>(FastAtofWrapper());
}