-Xdbl_size

This option specifies the data size of double and long double type.

[Specification format]

-Xdbl_size=num

-	Interpretation when omitted

double and long double type are 8 bytes (this is the same result as when -Xdbl_size=8 is specified).

[Detailed description]

-	This option specifies the data size of double and long double type.

-	One of the following can be specified as num. An error will occur if any other item is specified.

-	4 double and long double type are 4 bytes.

-	8 double and long double type are 8 bytes.