Supported data types for passing function return values
Table 1 lists the data types that can be passed as function return values from a C function to a Fortran routine.
| C | Fortran |
|---|---|
| signed short int | INTEGER*2 |
| signed int, signed long int | INTEGER*4 |
| float | REAL*4 |
| double | REAL*8 |
| long double | REAL*16 |
| signed char | INTEGER*1 |
| unsigned char | UNSIGNED*1 |