Elementary data types

This section describes the elementary data types supported by GNU Modula-2. It also describes the relationship between these data types and the equivalent C data types.

The following data types are supported: INTEGER, LONGINT, SHORTINT, CARDINAL, LONGCARD, SHORTCARD, BOOLEAN, REAL, LONGREAL, SHORTREAL, COMPLEX, LONGCOMPLEX, SHORTCOMPLEX and CHAR.

An equivalence table is given below:

GNU Modula-2              GNU C
======================================
INTEGER                   int
LONGINT                   long long int
SHORTINT                  short int
CARDINAL                  unsigned int
LONGCARD                  long long unsigned int
SHORTCARD                 short unsigned int
BOOLEAN                   int
REAL                      double
LONGREAL                  long double
SHORTREAL                 float
CHAR                      char
SHORTCOMPLEX              complex float
COMPLEX                   complex double
LONGCOMPLEX               complex long double

Note that GNU Modula-2 also supports fixed sized data types which are exported from the SYSTEM module. See The PIM system module. See The ISO system module.