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root/software/fixed/fixed_util.cc @ 42048db0

c7e0510c David Sorber
#include <cmath>
#include <cstdint>
#include <limits>
#include <iomanip>
#include <iostream>
#include <stdexcept>

#include "fixed.h"
#include "int128.h"

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#define USE_INT128 1

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// g++ fixed_test.cc -o fixed_test
int main(int argc, char** argv)
{
std::cout << "Fixed Type Test Util\n" << std::endl;
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fixed_128_128 value;
const char* input = "-0.31415926535897932384626433832795028841";
value.parse(input);
std::cout << "[0] Value: " << value << std::endl;
value = value * 0;
std::cout << "[1] Value: " << value << std::endl;
#if 0
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fixed_64_64 val;
fixed_64_64 val2;
val.parse("0.314159263538979");
std::cout << "[1] Val: " << val << std::endl;
val2 = val * 10;
std::cout << "[2] Val: " << val2 << std::endl;
val2 = val * 86;
std::cout << "[3] Val: " << val2 << std::endl;
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std::cout << "\n--------------------------------------------------------------------\n" << std::endl;
fixed_128_128 val3;
fixed_128_128 val4;
val3.parse("0.314159263538979");
std::cout << "[1] Val: " << val3 << std::endl;
val4 = val3 * 10;
std::cout << "[2] Val: " << val4 << std::endl;
val4 = val3 * 86;
std::cout << "[3] Val: " << val4 << std::endl;
#endif
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#if 0
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//-------------------------------------------------------------------------
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fixed_64_64 foobar;
std::cout << "Type size: " << sizeof(fixed_64_64) << std::endl;
std::cout << "Integer decimal digits: " << fixed_64_64::integer_decimal_digits << std::endl;
std::cout << "Fractional decimal digits: " << fixed_64_64::fractional_decimal_digits << std::endl;
std::cout << "Max integer value: " << fixed_64_64::MAX_INTEGER_VALUE << std::endl;
std::cout << "Max fractional value: " << fixed_64_64::MAX_FRACTIONAL_VALUE << std::endl;
std::cout << std::endl;
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std::cout << "Value: " << foobar << "\n\n" << std::endl;
//-------------------------------------------------------------------------
#ifdef USE_INT128

fixed_128_128 barfoo;
std::cout << "Type size: " << sizeof(barfoo) << std::endl;
std::cout << "Integer decimal digits: " << fixed_128_128::integer_decimal_digits << std::endl;
std::cout << "Fractional decimal digits: " << fixed_128_128::fractional_decimal_digits << std::endl;
std::cout << "Max integer value: " << fixed_128_128::MAX_INTEGER_VALUE << std::endl;
std::cout << "Max fractional value: " << fixed_128_128::MAX_FRACTIONAL_VALUE << std::endl;
std::cout << std::endl;
std::cout << "Value: " << barfoo << "\n\n" << std::endl;

#endif
//-------------------------------------------------------------------------
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fixed_64_64 quxbar(3, 1415926353);
std::cout << "Value: " << quxbar << std::endl;
fixed_64_64 intMax(999999999999999999ULL);
std::cout << "Value: " << intMax << std::endl;
try
{
fixed_64_64 intOverflow(1999999999999999999ULL);
std::cout << "Value: " << intMax << std::endl;
}
catch (const std::out_of_range& excep)
{
std::cout << "Integer overflow caught" << std::endl;
}
fixed_64_64 fracMax(0, 9999999999999999999ULL);
std::cout << "Value: " << fracMax << std::endl;
try
{
fixed_64_64 fracOverflow(0, 10000000000000000001ULL);
}
catch (const std::out_of_range& excep)
{
std::cout << "Fractional overflow caught" << std::endl;
}
fixed_64_64 value1;
fixed_64_64 value2;
const char* strVal = "100.1";
value1.parse(strVal);
std::cout << "String value: " << strVal << std::endl;
std::cout << "Parsed value: " << value1 << std::endl;
strVal = "100";
value2.parse(strVal);
std::cout << "String value: " << strVal << std::endl;
std::cout << "Parsed value: " << value2 << std::endl;
std::cout << value1 << " == " << value2 << " --> " << (value1 == value2) << std::endl;
std::cout << value1 << " != " << value2 << " --> " << (value1 != value2) << std::endl;
std::cout << value1 << " > " << value2 << " --> " << (value1 > value2) << std::endl;
std::cout << value1 << " < " << value2 << " --> " << (value1 < value2) << std::endl;
std::cout << value1 << " >= " << value2 << " --> " << (value1 >= value2) << std::endl;
std::cout << value1 << " <= " << value2 << " --> " << (value1 <= value2) << std::endl;
//~ double foo = std::pow(10, 18);
//~ std::cout << "Foo: " << std::fixed << std::setprecision(0) << foo << std::endl;
//~ std::cout << "Foo: " << std::fixed << std::setprecision(0) << (static_cast<uint64_t>(foo) - 1) << std::endl;
uint128_t big = 1098298217598174ULL;
std::cout << "BIG INT: " << big << std::endl;
big *= 1098982694765;
std::cout << "BIGGER INT: " << big << std::endl;
std::cout << "INT128T MAX: " << std::numeric_limits<int128_t>::max() << std::endl;
std::cout << "UINT128T MAX: " << std::numeric_limits<uint128_t>::max() << std::endl;
strVal = "-1207010734831637608463359110";
int128_t s128Val = strtoll_128(strVal, nullptr, 0);
std::cout << "String value: " << strVal << std::endl;
std::cout << "Parsed value: " << s128Val << std::endl;
//~ strVal = "991207010734831637608463359110888";
strVal = "340282366920938463463374607431768211456";
uint128_t u128Val = strtoull_128(strVal, nullptr, 0);
std::cout << "String value: " << strVal << std::endl;
std::cout << "Parsed value: " << u128Val << std::endl;
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#endif
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return 0;
}