xxq250/Nasal-Interpreter
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⚡ several updates.

Browse Source 
1. merge `--chkpath` `-cp` with `-d`

2. complete test/ppmgen.nas

3. update comments about why we don't use `atof` to convert string to
number

4. update .gitignore
This commit is contained in:
ValKmjolnir
2022-08-19 23:25:46 +08:00
parent 692f8ccefe
commit caf048aae4
4 changed files with 34 additions and 24 deletions
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nasal.h
+9 -6
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@@ -52,7 +52,7 @@ using std::string;
const u32 STACK_DEPTH=1024;
inline f64 hex_to_double(const char* str)
inline f64 hex2f(const char* str)
{
f64 ret=0;
for(;*str;++str)
@@ -69,7 +69,7 @@ inline f64 hex_to_double(const char* str)
}
return ret;
}
inline f64 oct_to_double(const char* str)
inline f64 oct2f(const char* str)
{
f64 ret=0;
for(;*str;++str)
@@ -82,7 +82,10 @@ inline f64 oct_to_double(const char* str)
}
return ret;
}
inline f64 dec_to_double(const char* str)
// we have the same reason not using atof here just as andy's interpreter does.
// it is not platform independent, and may have strange output.
// so we write a new function here to convert str to number manually.
inline f64 dec2f(const char* str)
{
f64 ret=0,negative=1,num_pow=0;
while('0'<=*str && *str<='9')
@@ -124,11 +127,11 @@ f64 str2num(const char* str)
if(!*str)
return nan("");
if(str[0]=='0' && str[1]=='x')
res=hex_to_double(str+2);
res=hex2f(str+2);
else if(str[0]=='0' && str[1]=='o')
res=oct_to_double(str+2);
res=oct2f(str+2);
else
res=dec_to_double(str);
res=dec2f(str);
return negative?-res:res;
}