Namespacyfied
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@ -8,8 +8,11 @@
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#include "ContainerUtility.h"
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#include "ContainerUtility.h"
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class BaseConversion {
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namespace Leonetienne {
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public:
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namespace GeneralUtility {
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class BaseConversion {
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public:
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//! Will divide a number of arbitrary base in `dividend` by an integer divisor.
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//! Will divide a number of arbitrary base in `dividend` by an integer divisor.
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//! This is a specific helper function for the base conversion functions.
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//! This is a specific helper function for the base conversion functions.
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//! \tparam T_Container The type of container used for the digitstring
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//! \tparam T_Container The type of container used for the digitstring
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@ -17,16 +20,17 @@ public:
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//! \param divisor The integer divisor
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//! \param divisor The integer divisor
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//! \param set The set/base of `dividend`
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//! \param set The set/base of `dividend`
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//! \return A pair of the result. (result, rest)
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//! \return A pair of the result. (result, rest)
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template <class T_Container>
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template<class T_Container>
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static std::pair<T_Container, int> DigitstringDivision(const T_Container& dividend, const unsigned int divisor, const T_Container& set);
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static std::pair<T_Container, int>
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DigitstringDivision(const T_Container ÷nd, const unsigned int divisor, const T_Container &set);
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//! Will convert a number of arbitrary base to base 10
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//! Will convert a number of arbitrary base to base 10
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//! \tparam T_Container The type of container used for the digitstring
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//! \tparam T_Container The type of container used for the digitstring
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//! \param num A listlike container representing the number (such as a string)
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//! \param num A listlike container representing the number (such as a string)
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//! \param set The set/base of the number
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//! \param set The set/base of the number
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//! \return A 64-bit integer representing the number
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//! \return A 64-bit integer representing the number
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template <class T_Container>
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template<class T_Container>
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static std::uint64_t BaseX_2_10(const T_Container& num, const T_Container& set);
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static std::uint64_t BaseX_2_10(const T_Container &num, const T_Container &set);
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//! Will convert a number to an arbitrary base.
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//! Will convert a number to an arbitrary base.
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//! This just a wrapper for BaseX_2_Y.
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//! This just a wrapper for BaseX_2_Y.
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@ -34,8 +38,9 @@ public:
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//! \param num The number to be converted
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//! \param num The number to be converted
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//! \param set The desired set/base for the output to be in. Should be a listlike container (such as a string)
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//! \param set The desired set/base for the output to be in. Should be a listlike container (such as a string)
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//! \return `num` in base `set`
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//! \return `num` in base `set`
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template <class T_Container>
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template<class T_Container>
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static T_Container Base10_2_X(const std::uint64_t& num, const T_Container& set, const std::uint32_t minOutLen = 1);
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static T_Container
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Base10_2_X(const std::uint64_t &num, const T_Container &set, const std::uint32_t minOutLen = 1);
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//! Will convert a number from an arbitrary base to another arbitrary base.
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//! Will convert a number from an arbitrary base to another arbitrary base.
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//! \tparam T_ContainerIn The type of container used for the incoming digitstring
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//! \tparam T_ContainerIn The type of container used for the incoming digitstring
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@ -45,15 +50,17 @@ public:
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//! \param set_out The desired set/base to output
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//! \param set_out The desired set/base to output
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//! \param minLen The minimum output length. Setting this will result in zero-padded output (Like, 00000001 instead of 1)
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//! \param minLen The minimum output length. Setting this will result in zero-padded output (Like, 00000001 instead of 1)
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//! \return `num` in base `set_out`
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//! \return `num` in base `set_out`
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template <class T_ContainerIn, class T_ContainerOut>
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template<class T_ContainerIn, class T_ContainerOut>
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static T_ContainerOut BaseX_2_Y(const T_ContainerIn& num, const T_ContainerIn& set_in, const T_ContainerOut& set_out, const std::uint32_t minOutLen = 1);
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static T_ContainerOut
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BaseX_2_Y(const T_ContainerIn &num, const T_ContainerIn &set_in, const T_ContainerOut &set_out,
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const std::uint32_t minOutLen = 1);
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private:
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private:
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// No instantiation! >:(
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// No instantiation! >:(
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BaseConversion();
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BaseConversion();
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};
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};
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namespace {
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namespace {
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// Fast 64-bit int power function
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// Fast 64-bit int power function
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inline std::uint64_t Powuli(const std::uint64_t &b, const std::uint64_t &e) {
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inline std::uint64_t Powuli(const std::uint64_t &b, const std::uint64_t &e) {
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std::uint64_t buf = 1;
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std::uint64_t buf = 1;
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@ -63,10 +70,10 @@ namespace {
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return buf;
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return buf;
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}
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}
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}
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}
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template <class T_Container>
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template<class T_Container>
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std::uint64_t BaseConversion::BaseX_2_10(const T_Container& num, const T_Container& set) {
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std::uint64_t BaseConversion::BaseX_2_10(const T_Container &num, const T_Container &set) {
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// If base is 0, throw logic error
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// If base is 0, throw logic error
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if (set.size() == 0)
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if (set.size() == 0)
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throw std::logic_error("Can't convert from base0! Please supply a nonempty set!");
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throw std::logic_error("Can't convert from base0! Please supply a nonempty set!");
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@ -75,19 +82,20 @@ std::uint64_t BaseConversion::BaseX_2_10(const T_Container& num, const T_Contain
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for (std::size_t i = 0; i < num.size(); i++) {
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for (std::size_t i = 0; i < num.size(); i++) {
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for (std::size_t j = 0; j < set.size(); j++) {
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for (std::size_t j = 0; j < set.size(); j++) {
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if (num[i] == set[j]) {
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if (num[i] == set[j]) {
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buf += Powuli((std::uint64_t)set.size(), (uint64_t)(num.size() - (i + 1))) * j;
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buf += Powuli((std::uint64_t) set.size(), (uint64_t) (num.size() - (i + 1))) * j;
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break;
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break;
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}
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}
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}
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}
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}
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}
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return buf;
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return buf;
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}
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}
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// Based on: https://www.geeksforgeeks.org/divide-large-number-represented-string/
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// Based on: https://www.geeksforgeeks.org/divide-large-number-represented-string/
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template <class T_Container>
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template<class T_Container>
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std::pair<T_Container, int>
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std::pair<T_Container, int>
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BaseConversion::DigitstringDivision(const T_Container& dividend, const unsigned int divisor, const T_Container& set) {
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BaseConversion::DigitstringDivision(const T_Container ÷nd, const unsigned int divisor,
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const T_Container &set) {
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// Quick rejects:
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// Quick rejects:
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// No set? Throw logic error
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// No set? Throw logic error
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return std::make_pair(T_Container({set[0]}), 0);
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return std::make_pair(T_Container({set[0]}), 0);
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// Verify that all digits are represented in the set/base
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// Verify that all digits are represented in the set/base
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for (const auto& c : dividend)
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for (const auto &c: dividend)
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if (ContainerUtility::Ord(c, set) == -1)
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if (ContainerUtility::Ord(c, set) == -1)
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throw std::logic_error("The supplied dividend contains a digit that is not represented in the set/base!");
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throw std::logic_error(
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"The supplied dividend contains a digit that is not represented in the set/base!");
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// Now for the actual algorithm:
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// Now for the actual algorithm:
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@ -147,10 +156,12 @@ BaseConversion::DigitstringDivision(const T_Container& dividend, const unsigned
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// else return the answer
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// else return the answer
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return std::make_pair(result, curRest);
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return std::make_pair(result, curRest);
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}
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}
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template <class T_ContainerIn, class T_ContainerOut>
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template<class T_ContainerIn, class T_ContainerOut>
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T_ContainerOut BaseConversion::BaseX_2_Y(const T_ContainerIn& num, const T_ContainerIn& set_in, const T_ContainerOut& set_out, const std::uint32_t minOutLen) {
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T_ContainerOut
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BaseConversion::BaseX_2_Y(const T_ContainerIn &num, const T_ContainerIn &set_in, const T_ContainerOut &set_out,
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const std::uint32_t minOutLen) {
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if ((set_in.size() == 0) || (set_out.size() == 0))
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if ((set_in.size() == 0) || (set_out.size() == 0))
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throw std::logic_error("Can't convert from or to base0! Please supply a nonempty set!");
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throw std::logic_error("Can't convert from or to base0! Please supply a nonempty set!");
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@ -179,32 +190,30 @@ T_ContainerOut BaseConversion::BaseX_2_Y(const T_ContainerIn& num, const T_Conta
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for (std::size_t i = 0; i < buf.size(); i++)
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for (std::size_t i = 0; i < buf.size(); i++)
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result.insert(result.cend(), buf[buf.size() - i - 1]);
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result.insert(result.cend(), buf[buf.size() - i - 1]);
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}
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}
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}
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} else {
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else
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{
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// If num is 0, just pass a null-value. The algorithm would hang otherwise.
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// If num is 0, just pass a null-value. The algorithm would hang otherwise.
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result.insert(result.cend(), set_out[0]);
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result.insert(result.cend(), set_out[0]);
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}
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}
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// Add as much null-values to the left as requested.
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// Add as much null-values to the left as requested.
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if (result.size() < minOutLen)
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if (result.size() < minOutLen) {
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{
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const std::size_t cachedLen = result.size();
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const std::size_t cachedLen = result.size();
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const T_ContainerOut cachedStr = result;
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const T_ContainerOut cachedStr = result;
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result.clear();
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result.clear();
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for (std::size_t i = 0; i < minOutLen - cachedLen; i++)
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for (std::size_t i = 0; i < minOutLen - cachedLen; i++)
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result.insert(result.cend(), set_out[0]);
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result.insert(result.cend(), set_out[0]);
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for (const auto& it : cachedStr)
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for (const auto &it: cachedStr)
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result.insert(result.cend(), it);
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result.insert(result.cend(), it);
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}
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}
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return result;
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return result;
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}
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}
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template <class T_Container>
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template<class T_Container>
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T_Container BaseConversion::Base10_2_X(const std::uint64_t &num, const T_Container& set, const std::uint32_t minOutLen) {
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T_Container
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BaseConversion::Base10_2_X(const std::uint64_t &num, const T_Container &set, const std::uint32_t minOutLen) {
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// Convert num to a string
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// Convert num to a string
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std::stringstream ss;
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std::stringstream ss;
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ss << num;
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ss << num;
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@ -215,6 +224,10 @@ T_Container BaseConversion::Base10_2_X(const std::uint64_t &num, const T_Contain
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// return it
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// return it
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return convertedNum;
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return convertedNum;
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}
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}
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}
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}
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#endif //GENERALUTILITY_BASECONVERSION_H
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#endif //GENERALUTILITY_BASECONVERSION_H
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#include <algorithm>
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#include <algorithm>
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class ContainerUtility {
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namespace Leonetienne {
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public:
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namespace GeneralUtility {
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class ContainerUtility {
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public:
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//! Will return the index of `item` in `set`.
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//! Will return the index of `item` in `set`.
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//! \tparam T_Type The type of `item`
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//! \tparam T_Type The type of `item`
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//! \tparam T_Container The type of container
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//! \tparam T_Container The type of container
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//! \param item The item to find the index for
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//! \param item The item to find the index for
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//! \param set The container to be looking in
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//! \param set The container to be looking in
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//! \return The index of `item` in `set`. -1 if not found.
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//! \return The index of `item` in `set`. -1 if not found.
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template <typename T_Type, class T_Container>
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template<typename T_Type, class T_Container>
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static int Ord(const T_Type& item, const T_Container& set);
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static int Ord(const T_Type &item, const T_Container &set);
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private:
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private:
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// No instantiation! >:(
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// No instantiation! >:(
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ContainerUtility();
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ContainerUtility();
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};
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};
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template<typename T_Type, class T_Container>
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template<typename T_Type, class T_Container>
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int ContainerUtility::Ord(const T_Type& item, const T_Container& set) {
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int ContainerUtility::Ord(const T_Type &item, const T_Container &set) {
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const auto result =
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const auto result =
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std::find_if(set.begin(), set.end(), [item](const T_Type& c) -> bool {
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std::find_if(set.begin(), set.end(), [item](const T_Type &c) -> bool {
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return c == item;
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return c == item;
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});
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});
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@ -31,6 +34,8 @@ int ContainerUtility::Ord(const T_Type& item, const T_Container& set) {
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return -1;
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return -1;
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else
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else
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return result - set.begin();
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return result - set.begin();
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}
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}
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}
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}
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#endif //GENERALUTILITY_CONTAINERUTILITY_H
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#endif //GENERALUTILITY_CONTAINERUTILITY_H
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#include <BaseConversion.h>
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#include <BaseConversion.h>
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#include "Catch2.h"
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#include "Catch2.h"
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using namespace Leonetienne::GeneralUtility;
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// Tests base 10 to 10
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// Tests base 10 to 10
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TEST_CASE(__FILE__"/Base10_to_10", "[BaseConversion][Base10_2_X]")
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TEST_CASE(__FILE__"/Base10_to_10", "[BaseConversion][Base10_2_X]")
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{
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{
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#include <BaseConversion.h>
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#include <BaseConversion.h>
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#include "Catch2.h"
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#include "Catch2.h"
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using namespace Leonetienne::GeneralUtility;
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// Tests base 10 to 10
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// Tests base 10 to 10
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TEST_CASE(__FILE__"/Base10_to_10", "[BaseConversion][BaseX_2_10]")
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TEST_CASE(__FILE__"/Base10_to_10", "[BaseConversion][BaseX_2_10]")
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{
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{
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#include <BaseConversion.h>
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#include <BaseConversion.h>
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#include "Catch2.h"
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#include "Catch2.h"
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using namespace Leonetienne::GeneralUtility;
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// Tests base 10 to 10
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// Tests base 10 to 10
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TEST_CASE(__FILE__"/Base10_to_10", "[BaseConversion][BaseX_2_Y]")
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TEST_CASE(__FILE__"/Base10_to_10", "[BaseConversion][BaseX_2_Y]")
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{
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{
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#include <time.h>
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#include <time.h>
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#include <stdexcept>
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#include <stdexcept>
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using namespace Leonetienne::GeneralUtility;
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// Tests that basic division (base10) is working, with oracle values
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// Tests that basic division (base10) is working, with oracle values
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TEST_CASE(__FILE__"/Base10", "[BaseConversion][DigitstringDivision]")
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TEST_CASE(__FILE__"/Base10", "[BaseConversion][DigitstringDivision]")
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{
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{
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#include <string>
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#include <string>
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#include <vector>
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#include <vector>
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using namespace Leonetienne::GeneralUtility;
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// Tests that the Ord method works with characters in a string
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// Tests that the Ord method works with characters in a string
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TEST_CASE(__FILE__"/WorksWithCharsInString", "[ContainerUtility][Ord]")
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TEST_CASE(__FILE__"/WorksWithCharsInString", "[ContainerUtility][Ord]")
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{
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{
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