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| Functions | |
| double | strtod (const std::string& str) | 
| Converts a string to a doublevalue. | |
| double | strtod (const std::string& str, std::string::size_type& end_index, std::string::size_type start_index=0) | 
| Converts a string to a doublevalue. | |
| std::string | dtostr (double d) | 
| Converts a doubleto a string, using the'.  | |
| bool | isalnum (char c) | 
| bool | isalpha (char c) | 
| bool | iscntrl (char c) | 
| bool | isdigit (char c) | 
| bool | isgraph (char c) | 
| bool | islower (char c) | 
| bool | isprint (char c) | 
| bool | ispunct (char c) | 
| bool | isspace (char c) | 
| bool | isupper (char c) | 
| bool | isxdigit (char c) | 
| char | tolower (char c) | 
| char | toupper (char c) | 
| int | digit_value (char c) | 
| int | xdigit_value (char c) | 
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