The standard conversions are those pre-defined conversions that can occur as
part of a user-defined
conversion.
13.3.1 Standard implicit conversions
The following implicit conversions are classified as standard implicit
conversions:
?Identity conversions (?3.1.1)
?Implicit numeric conversions (?3.1.2)
?Implicit reference conversions (?3.1.4)
?Boxing conversions (?3.1.5)
?Implicit constant expression conversions (?3.1.6)
The standard implicit conversions specifically exclude user-defined
implicit conversions.
13.3.2 Standard explicit conversions
The standard explicit conversions are all standard implicit conversions
plus the subset of the explicit
conversions for which an opposite standard implicit conversion exists.
[Note: In other words, if a standard
implicit conversion exists from a type A to a type B, then a standard
explicit conversion exists from type A to
type B and from type B to type A. end note]
