switch attribute
The switch keyword selects the discriminant for an encapsulated_union.
switch (switch-type switch-name)
Parameters
-
switch-type
-
Specifies an int, char, enum type, or an identifier that resolves to one of these types.
-
switch-name
-
Specifies the name of the variable of type switch-type that acts as the union discriminant.
Examples
typedef union _S1_TYPE switch (long l1) U1_TYPE
{
case 1024:
float f1;
case 2048:
double d2;
} S1_TYPE;
/* in generated header file */
typedef struct _S1_TYPE
{
long l1;
union
{
float f1;
double d2;
} U1_TYPE;
} S1_TYPE;
See also