stringstream not working on Android

[fatmingwang]

the code in muParser.cpp
int Parser::IsVal(const char_type* a_szExpr, int *a_iPos, value_type *a_fVal)
{
....
....
below one will crash on android(NDK)
stream >> fVal;//stringstream not working right on android plaform
....
}

so I have change as
//return how many string is legal for value,if return 0 this is not a value
inline int Mywtof( const wchar_t* e_str,double_e_pdValue )
int Parser::IsVal(const char_type_ a_szExpr, int *a_iPos, value_type *a_fVal)
{
value_type fVal(0);
int l_iValueLength = Mywtof(a_szExpr,&fVal);
if( l_iValueLength == 0 )
return 0;
*a_iPos += l_iValueLength;
*a_fVal = fVal;
return 1;
}

inline int Mywtof( const wchar_t* e_str,double*e_pdValue )
{
    int l_iLegalValueLength = 0;
    bool l_bIsValue = true;
    bool bMinus = false;
    if (*e_str == '+')
    {
        e_str++;
    }
    else
    if (*e_str == '-')
    {
        bMinus = true;
        e_str++;
    }
    double  l_dbValue = 0.f;
    int     l_dotStart = -1;
    int l_iLength = wcslen(e_str);
    for( int i=0;i<l_iLength;++i )
    {
        if( e_str[i] == L'.' )
        {
            l_dotStart = i;
        }
        else
        if( e_str[i] >= L'0' && e_str[i] <= L'9' )
        {
            l_dbValue = (l_dbValue*10) +(e_str[i]-L'0');
        }
        else
        if( e_str[i] == L'e'||e_str[i] == L'E' )
        {
            int l_ie = e_str[i+2]-L'0';
            for( int j=1;j<l_ie;++j )
                l_dbValue /= 10;
        }
        else
        {
            break;
        }
        ++l_iLegalValueLength;
    }

    if( l_dotStart != -1 )
    {
        float   l_fDotOffset = 1.f;
        for( int j=1;j<l_iLength-l_dotStart;++j )
            l_fDotOffset*=10;
        l_dbValue/=l_fDotOffset;
    }
    *e_pdValue = bMinus?-l_dbValue:l_dbValue;
    return l_iLegalValueLength;
}

[beltoforion]

closing the issue since it is more a bug of android than muparser.