IBM Version 4 manual Selecting the High-Level Language To Use

Selecting the High-Level Language To Use

You can use APIs with all the languages available on AS/400 business c systems, except for the ILE APIs. ILE APIs that are implemented as grams (*SRVPGM) can be accessed only by ILE languages. In some cases program (*PGM) interface is provided so that non-ILE languages can acce function.

Some APIs also require that particular data types and particular par conventions be used. Figure 2-2 shows the languages available on the AS system and the data types that they provide.

Figure

2-2. Language

Selection

Considerations — Data

Types

Excep-

Float-

tion

Poin-

Binary

Binary

Char-

Zoned

Packed

ing

Struc-

Single

Han-

Language

1

ters

2

4

acter

Decimal

Decimal

Point

tures

Array

dling

BASIC

(PRPQ

X

X

X

X2

X2

X

X

X

5799-FPK)

ILE

C

X

X

X

X

X9

X

X

X

X

VisualAge ++C

for

X

X

X

X

X10

X

X

X

X

OS/400

CL

X3

X3

X

X

X4

X4

X

ILE

CL

X5

X3

X3

X

X

X4

X4

X

COBOL

X

X

X

X

X

X

X

X

X6

ILE

COBOL

X

X

X

X

X

X

X

X

X6

MI

X

X

X

X

X

X

X

X

X

X

Pascal

(PRPQ

X

X

X

X

X7

X7

X

X

X

X

5799-FRJ)

PL/I

(PRPQ

X

X

X

X

X

X

X

X

X

X

5799-FPJ)

REXX

X

X4

X4

X

RPG

X

X

X

X

X

X

X

X8

ILE

RPG

X

X

X

X

X

X

X

X

X8

Notes:

1

You

cannot

develop

Cross

System Product

(CSP)

programs

on

an

AS/400

system. However,

you

can

develop

CSP

pro

grams

on

a

System/370

system

and

run them on your AS/400 system.

2

Refer

to

the

CNVRT$

intrinsic

function.

3

There

is

no direct

support,

but

the

%BIN

function

exists

on the

Change

Variable (CHGVAR)

CL

command

to

from

binary.

4

There

is

no

direct

support,

but

you can use the substring capability to simulate

structures and

arr

5

There

is

no

direct

support,

but

pointers

passed to a

CL

program

are preserved.

6

COBOL

and

ILE

COBOL

programs

cannot

monitor

for

specific

messages,

but

these

programs

can

define

an

er

run

when

a

program

ends

because

of an error.

7

There is no direct support,

but

you

can

use

extended

program

model

(EPM)

conversion

routines

to

convert

zoned

and

packed

decimal.

8

RPG

programs

cannot

monitor

for

specific messages, but these programs

turn

on

an

error

indicator

when

a

ends

with

an

error. These

programs

can

define

an

error

handler

to

run

when

a

program

ends

because

o

9

Packed

decimal

is

implemented

in

ILE C with the decimal() data type.

10

Packed

decimal

is

implemented

in

VisualAge++ for

OS/400C

with

the

Binary

Coded

Decimal

(BCD)

class. The

BCD

class

the C++ implementation of the

C-language's decimal(). The BCD object can be used in

API

calls

because

patible

with

the

decimal()

data

type.

Chapter 2. Getting Started with2-3APIs