Compatibility Of Types For C And Pascal; Table 6-1 C And Pascal Size And Alignment Of Compatible Types - Sun Microsystems SunSoft Pascal 4.0 User Manual

6

Compatibility of Types for C and Pascal

90
The -c option produces an unlinked object file. The -calign option causes
pc to use C-like data formats for aggregate objects.
When you compile a Pascal main routine that calls C, you don't have to use
any special options, but the -calign option is again useful. The C object
library, libc, is automatically brought in for every Pascal compilation.
For example:
hostname% cc -c my_c.c
hostname% pc -calign my_c.o my_pascal.p
Table 6-1 and Table 6-2 list the default sizes and alignments of compatible
types for C and Pascal.
Table 6-1 C and Pascal Size and Alignment of Compatible Types
Pascal Type C Type
double double
longreal double
real double
single float
shortreal float
integer16 short int
integer32 int
integer int
-128..127 char
boolean char
alfa char a[10
char char
string char a[80]
varying[n] of char struct {int, char[n]}
record struct/union
Pascal 4.0 User's Guide
Size (bytes)
8
8
8
4
4
2
4
4
1
1
]
10
1
80
-
-
Alignment (bytes)
8
8
8
4
4
2
4
4
1
1
1
1
1
4
Same as element type