System.AnsiStringBase.ToDouble
C++
double ToDouble() const;
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| function | public | dstring.h | System | AnsiStringBase |
Description
Converts the string to a floating-point value.
ToDouble converts the string to a floating-point value. The string must consist of an optional sign (+ or -), a string of digits with an optional decimal point, and an optional 'E' or 'e' followed by a signed integer. Leading and trailing blanks in the string are ignored. The DecimalSeparator global variable defines the character that must be used as a decimal point. Thousand separators and currency symbols are not allowed in the string. If the string does not contain a valid value, an EConvertError exception is thrown.