本文整理汇总了C++中decimal类的典型用法代码示例。如果您正苦于以下问题：C++ decimal类的具体用法？C++ decimal怎么用？C++ decimal使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了decimal类的13个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: suma
void decimal::suma(const decimal &sum)
{
// Por cada cifra del decimal, empezando por el final:
// 1. Sumamos ambos numeros.
// 2. Si la suma pasa de 10 acarreamos para la siguiente cifra, y restamos
// 10 a la cifra actual.
bool acarreo = false;
for(unsigned int i = 0; i < cifs; ++i) {
uint8_t op1 = this->get_cifra(i);
uint8_t op2 = sum.get_cifra(i);
uint8_t op3 = op1 + op2;
if(acarreo) ++op3;
if(op3 >= 10) {
acarreo = true;
op3 -= 10;
}
else {
acarreo = false;
}
// Control para el overflow.
if(acarreo && (i == cifs - 1))
this->set_cifra(10, i);
else
this->set_cifra(op3, i);
}
}
开发者ID:kbaedal，项目名称:test，代码行数:31，代码来源:decimal.cpp
示例2: resta
void decimal::resta(const decimal &res)
{
// Por cada cifra del decimal, empezando por el final:
// 1. Comprobamos si operador 1 es mayor o igual operador 2.
// 2. Si lo es, restamos. Si no, añadimos 10, indicando acarreo para el siguiente, y restamos.
bool acarreo = false;
for(unsigned int i = 0; i < cifs; ++i) {
uint8_t op1 = this->get_cifra(i);
uint8_t op2 = res.get_cifra(i);
if(acarreo) ++op2;
if(op1 < op2) {
op1 += 10;
acarreo = true;
}
else {
acarreo = false;
}
int op3 = op1 - op2;
this->set_cifra(op3, i);
}
}
开发者ID:kbaedal，项目名称:test，代码行数:27，代码来源:decimal.cpp
示例3: t
bool operator==(const decimal &a, const decimal &b)
{
// 1. Comparamos signos. Si son diferentes devolvemos falso.
// 2. Cambiamos el tamaño de b para que coincida con el de a.
// 3. Comparamos cifra a cifra.
if(a.is_negative() != b.is_negative()) return false;
decimal t(b);
t.resize(a.cifs, a.decs);
for(int i = 0; i < static_cast<int>(a.long_buffer); ++i)
if(a.buffer[i] != t.buffer[i])
return false;
return true;
}
开发者ID:kbaedal，项目名称:test，代码行数:17，代码来源:decimal.cpp
示例4: decimal
inline decimal operator*(const decimal& a, const decimal& b) {
const int64_t va = a.value() > 0 ? a.value() : -a.value();
const int64_t vb = b.value() > 0 ? b.value() : -b.value();
const int64_t ia = va/DECIMAL_PRECISION;
const int64_t ib = vb/DECIMAL_PRECISION;
const int64_t fa = va%DECIMAL_PRECISION;
const int64_t fb = vb%DECIMAL_PRECISION;
const decimal result = decimal(ia*ib*DECIMAL_PRECISION + fa*ib + fb*ia + (fa*fb)/DECIMAL_PRECISION);
if(a.value() < 0 && b.value() > 0 || b.value() < 0 && a.value() > 0) {
return -result;
} else {
return result;
}
}
开发者ID:ivanovic，项目名称:frogatto，代码行数:17，代码来源:decimal.hpp
示例5: DECIMAL
decimal operator/(const decimal& a, const decimal& b)
{
int64_t va = a.value() > 0 ? a.value() : -a.value();
int64_t vb = b.value() > 0 ? b.value() : -b.value();
if(va == 0) {
return a;
}
int64_t orders_of_magnitude_shift = 0;
const int64_t target_value = DECIMAL(10000000000000);
while(va < target_value) {
va *= DECIMAL(10);
++orders_of_magnitude_shift;
}
const int64_t target_value_b = DECIMAL(1000000);
while(vb > target_value_b) {
vb /= DECIMAL(10);
++orders_of_magnitude_shift;
}
int64_t value = (va/vb);
while(orders_of_magnitude_shift > 6) {
value /= DECIMAL(10);
--orders_of_magnitude_shift;
}
while(orders_of_magnitude_shift < 6) {
value *= DECIMAL(10);
++orders_of_magnitude_shift;
}
const decimal result(decimal::from_raw_value(value));
if(a.value() < 0 && b.value() > 0 || b.value() < 0 && a.value() > 0) {
return -result;
} else {
return result;
}
}
开发者ID:gradonly，项目名称:frogatto，代码行数:43，代码来源:decimal.cpp
示例6: underflow_error
decimal decimal::operator -=(const decimal& b)
{
if (b.isZero()) {
return *this;
}
decimal& a = *this;
const size_t w = a.length();
if (b.length() > w) {
throw underflow_error("Negative values not allowed");
}
bool borrow = false;
for (size_t i = 0; i < w; i++) {
digit d = a[i] - b[i] - (borrow ? 1 : 0);
borrow = d < 0;
a[i] = borrow ? 10 + d : d;
}
if (borrow) {
throw underflow_error("Negative values not allowed");
}
remove_lz();
return *this;
}
开发者ID:battlesnake，项目名称:kaiu，代码行数:22，代码来源:decimal.cpp
示例7: if
decimal decimal::operator +=(const decimal& b)
{
if (isZero()) {
*this = b;
return *this;
} else if (b.isZero()) {
return *this;
}
decimal& a = *this;
const size_t w = max(a.length(), b.length());
digits.resize(w + 1);
bool carry = false;
for (size_t i = 0; i < w; i++) {
digit d = a[i] + b[i] + (carry ? 1 : 0);
carry = d >= 10;
a[i] = carry ? d - 10 : d;
}
if (carry) {
a[w] = 1;
} else {
digits.resize(w);
}
return *this;
}
开发者ID:battlesnake，项目名称:kaiu，代码行数:24，代码来源:decimal.cpp
示例8: length
decimal decimal::operator *(const decimal& value) const
{
const decimal& a = length() <= value.length() ? *this : value;
const decimal& b = length() > value.length() ? *this : value;
if (a.isZero()) {
return decimal(0);
} else if (a.isUnity()) {
return b;
}
decimal c;
const auto as = a.length();
const auto bs = b.length();
c.digits.resize(as + bs);
for (size_t i = 0; i < as; i++) {
const digit ad = a[i];
if (ad == 0) {
continue;
}
decimal tmp;
tmp.digits.resize(bs + i + 1);
digit carry = 0;
for (size_t j = 0; j < bs; j++) {
digit d = b[j] * ad + carry;
carry = d / 10;
tmp[j + i] = d - (carry * 10);
}
if (carry) {
tmp[bs + i] = carry;
} else {
tmp.digits.resize(bs + i);
}
c += tmp;
}
c.remove_lz();
return c;
}
开发者ID:battlesnake，项目名称:kaiu，代码行数:36，代码来源:decimal.cpp
示例9: relation_to
char decimal::relation_to(const decimal& b) const
{
const decimal& a = *this;
const auto as = a.length();
const auto bs = b.length();
if (as > bs) {
return +1;
} else if (bs > as) {
return -1;
}
for (auto i = as; i > 0; i--) {
digit d = a[i - 1] - b[i - 1];
if (d > 0) {
return +1;
} else if (d < 0) {
return -1;
}
}
return 0;
}
开发者ID:battlesnake，项目名称:kaiu，代码行数:20，代码来源:decimal.cpp
示例10: variant
explicit variant(decimal d) : type_(VARIANT_TYPE_DECIMAL), decimal_value_(d.value()) {}
开发者ID:psikorski，项目名称:anura，代码行数:1，代码来源:variant.hpp
示例11: decimal
decimal decimal::parallel_multiply(const decimal& l, const decimal& r)
{
const decimal& a = l.length() <= r.length() ? l : r;
const decimal& b = l.length() > r.length() ? l : r;
if (a.isZero()) {
return decimal(0);
} else if (a.isUnity()) {
return b;
}
const auto as = a.length();
const auto bs = b.length();
const size_t cores = std::thread::hardware_concurrency();
const size_t workers = min<size_t>(cores, (as / 1000));
if (workers == 0) {
return l * r;
}
decimal result;
result.digits.resize(as + bs);
mutex mx;
function<int(size_t, size_t)> partial_product = [&a, &b, as, bs, &mx, &result] (size_t begin, size_t end) {
decimal c;
c.digits.resize(as + bs);
decimal tmp;
tmp.digits.reserve(bs + end + 1);
for (size_t i = begin; i < end; i++) {
const digit ad = a[i];
if (ad == 0) {
continue;
}
fill(tmp.digits.begin(), tmp.digits.end(), 0);
tmp.digits.resize(bs + i + 1);
digit carry = 0;
for (size_t j = 0; j < bs; j++) {
digit d = b[j] * ad + carry;
carry = d / 10;
tmp[j + i] = d - (carry * 10);
}
if (carry) {
tmp[bs + i] = carry;
} else {
tmp.digits.resize(bs + i);
}
c += tmp;
}
lock_guard<mutex> lock(mx);
result += c;
return 0;
};
vector<future<int>> futures;
futures.reserve(workers);
for (size_t worker = 0; worker < workers; worker++) {
const auto begin = (as * worker) / workers;
const auto end = (as * (worker + 1)) / workers;
futures.emplace_back(async(std::launch::async, partial_product, begin, end));
}
for (size_t worker = 0; worker < workers; worker++) {
auto& future = futures[worker];
future.get();
}
result.remove_lz();
return result;
}
开发者ID:battlesnake，项目名称:kaiu，代码行数:62，代码来源:decimal.cpp
示例12: key
void code_editor_widget::select_token(const std::string& row, int& begin_row, int& end_row, int& begin_col, int& end_col)
{
std::pair<int,int> key(begin_row, begin_col);
if(bracket_match_.count(key)) {
begin_row = bracket_match_.find(key)->second.front().first;
begin_col = bracket_match_.find(key)->second.front().second;
end_row = bracket_match_.find(key)->second.back().first;
end_col = bracket_match_.find(key)->second.back().second+1;
return;
}
text_editor_widget::select_token(row, begin_row, end_row, begin_col, end_col);
std::string token(row.begin() + begin_col, row.begin() + end_col);
boost::regex numeric_regex("-?\\d+(\\.\\d+)?", boost::regex::perl);
std::cerr << "token: (" << token << ")\n";
if(boost::regex_match(token.c_str(), numeric_regex)) {
const decimal current_value(decimal::from_string(token));
if(current_value <= 10000000 && current_value >= -10000000) {
slider_.reset(new slider(200, boost::bind(&code_editor_widget::on_slider_move, this, _1)));
slider_decimal_ = std::count(token.begin(), token.end(), '.') ? true : false;
slider_magnitude_ = (abs(current_value.as_int())+1) * 5;
const decimal slider_value = (current_value - decimal::from_int(-slider_magnitude_)) / decimal::from_int(slider_magnitude_*2);
slider_->set_position(slider_value.as_float());
slider_range_.clear();
slider_labels_.clear();
if(current_value > 0) {
slider_range_.push_back(slider_range(0.0, 0.1, -current_value*5, -current_value));
slider_range_.push_back(slider_range(0.1, 0.2, -current_value, decimal(0)));
slider_range_.push_back(slider_range(0.2, 0.3, decimal(0), current_value));
slider_range_.push_back(slider_range(0.3, 0.5, decimal(0), current_value));
slider_range_.push_back(slider_range(0.5, 0.7, current_value, 2*current_value));
slider_range_.push_back(slider_range(0.7, 0.9, 2*current_value, 5*current_value));
slider_range_.push_back(slider_range(0.9, 1.0, 5*current_value, 10*current_value));
slider_range_.push_back(slider_range(1.0, 2.0, 10*current_value, 20*current_value));
slider_->set_position(0.5);
} else {
slider_range_.push_back(slider_range(0.0, 0.5, current_value*2, decimal(0)));
slider_range_.push_back(slider_range(0.5, 1.0, decimal(0), -current_value*2));
slider_range_.push_back(slider_range(1.0, 2.0, -current_value*2, -current_value*4));
slider_->set_position(0.25);
}
std::pair<int,int> pos = char_position_on_screen(begin_row, (begin_col+end_col)/2);
row_slider_ = begin_row;
begin_col_slider_ = begin_col;
end_col_slider_ = end_col;
int x = pos.second - slider_->width()/2;
int y = pos.first + 20 - slider_->height();
if(x < 10) {
x = 10;
}
if(x > width() - slider_->width()) {
x = width() - slider_->width();
}
if(y < 20) {
y += 60;
}
if(y > height() - slider_->height()) {
y = height() - slider_->height();
}
slider_->set_loc(x, y);
foreach(slider_range& r, slider_range_) {
slider_labels_.push_back(widget_ptr(new gui::label(formatter() << r.target_begin, 10)));
slider_labels_.back()->set_loc(x + slider_->width()*r.begin - slider_labels_.back()->width()/2, y);
}
}
开发者ID:AsKorysti，项目名称:anura，代码行数:78，代码来源:code_editor_widget.cpp
示例13:
inline bool operator<=(const decimal& a, const decimal& b) {
return a.value() <= b.value();
}
开发者ID:ivanovic，项目名称:frogatto，代码行数:3，代码来源:decimal.hpp
注：本文中的decimal类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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