60 lines
1.2 KiB
C++
60 lines
1.2 KiB
C++
#ifndef __NASAL_FUNCTIONAL_H__
|
|
#define __NASAL_FUNCTIONAL_H__
|
|
|
|
bool is_float(std::string &str)
|
|
{
|
|
for(int i=0;i<(int)str.length();++i)
|
|
if(str[i]=='.')
|
|
return true;
|
|
return false;
|
|
}
|
|
long long int int_str2num(std::string &str)
|
|
{
|
|
for(int i=0;i<(int)str.length();++i)
|
|
if(!(('0'<=str[i]) && (str[i]<='9') || (str[i]=='.')))
|
|
{
|
|
std::cout<<"[Error] Non-numeric string."<<std::endl;
|
|
return 0;
|
|
}
|
|
long long int num=0;
|
|
long long int acc=1;
|
|
for(int i=(int)str.length()-1;i>=0;--i)
|
|
{
|
|
num+=acc*((long long int)(str[i]-'0'));
|
|
acc*=10;
|
|
}
|
|
return num;
|
|
}
|
|
double double_str2num(std::string &str)
|
|
{
|
|
for(int i=0;i<(int)str.length();++i)
|
|
if(!(('0'<=str[i]) && (str[i]<='9') || (str[i]=='.')))
|
|
{
|
|
std::cout<<"[Error] Non-numeric string."<<std::endl;
|
|
return 0;
|
|
}
|
|
int DotPlace=0;
|
|
for(int i=0;i<(int)str.length();++i)
|
|
if(str[i]=='.')
|
|
{
|
|
DotPlace=i;
|
|
break;
|
|
}
|
|
double num=0;
|
|
double acc=1;
|
|
double aff=0.1;
|
|
for(int i=DotPlace+1;i<(int)str.length();++i)
|
|
{
|
|
num+=aff*((double)(str[i]-'0'));
|
|
aff*=0.1;
|
|
}
|
|
for(int i=DotPlace-1;i>=0;--i)
|
|
{
|
|
num+=acc*((double)(str[i]-'0'));
|
|
acc*=10;
|
|
}
|
|
return num;
|
|
}
|
|
|
|
#endif
|