cpp/string/basic string/to wstring

Converts a numeric value to std.

Let be an internal to the conversion functions buffer, sufficiently large to contain the result of conversion.

@1@ Converts a signed decimal integer to a wide string as if by. @2@ Converts a signed decimal integer to a wide string as if by. @3@ Converts a signed decimal integer to a wide string as if by. @4@ Converts an unsigned decimal integer to a wide string as if by. @5@ Converts an unsigned decimal integer to a wide string as if by. @6@ Converts an unsigned decimal integer to a wide string as if by. @7,8@ Converts a floating point value to a wide string as if by. @9@ Converts a floating point value to a wide string as if by.

Return value
A wide string holding the converted value.

Exceptions
May throw std from the std constructor.