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Nasal-Interpreter
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Delete nasal_functional.h

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Valk Richard Li 2019-09-28 18:29:53 +08:00 committed by GitHub
parent b77bd42816
commit b377929f2b
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1 changed files with 0 additions and 59 deletions
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version0.4/nasal_functional.h
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@ -1,59 +0,0 @@
#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