本文整理汇总了C++中bigint::to_long方法的典型用法代码示例。如果您正苦于以下问题：C++ bigint::to_long方法的具体用法？C++ bigint::to_long怎么用？C++ bigint::to_long使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类bigint的用法示例。
在下文中一共展示了bigint::to_long方法的2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，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: pow
bigint pow (const bigint& base, const bigint& exponent) {
DEBUGF ('^', "base = " << base << ", exponent = " << exponent);
if (base == 0) return 0;
bigint base_copy = base;
long expt = exponent.to_long();
//long_max
if(expt > 2147483647) {
throw range_error ("Exponent cannot fit");
}
bigint result = bigint("1");
if (expt < 0) {
base_copy = 1 / base_copy;
expt = - expt;
}
while (expt > 0) {
if (expt & 1) { //odd
result = result * base_copy;
--expt;
} else { //even
base_copy = base_copy * base_copy;
expt /= 2;
}
}
DEBUGF ('^', "result = " << result);
return result;
}示例2: pow
bigint pow (const bigint& base, const bigint& exponent) {
DEBUGF ('^', "base = " << base << ", exponent = " << exponent);
if (base == 0) return 0;
bigint base_copy = base;
long expt = exponent.to_long();
bigint result = 1;
if (expt < 0) {
base_copy = 1 / base_copy;
expt = - expt;
}
while (expt > 0) {
if (expt & 1) { //odd
result = result * base_copy;
--expt;
}else { //even
base_copy = base_copy * base_copy;
expt /= 2;
}
}
DEBUGF ('^', "result = " << result);
return result;
}