Index_P

P

P (pad result) operation extender, 193

packed decimal data, 13

decimal data errors and, 559, 564–566

PACKEVEN Definition specification keyword, 65

%PADDR, 117, 118, 123, 160–161

PAGE reserved field name, 28

parameter lists (PLIST), 9, 29, 187, 189, 326–328, 453–459

CALL and, 219, 326

CALLB and, 221, 326

named vs. unnamed, 326

PARM and, 326

SPECIAL device routine and, 326–328

syntax diagram for, 197

parameter passing, 452–460

by reference, 324, 454–455, 454

by value vs. by reference, 324

CALL and, 456–458

data structures passed as parameters in, 459–460

entry parameter lists in, 453

field addresses in, 456

memory locations in, 455–456, 455

named parameter lists in, 455–456

PARM and, 457–459

PLIST and, 453–459

prototyped call interface in, 455

read-only parameters in, 454

weak parameter module in, 455

parameters

expressions as, 111–113

expressions in, 110

parameters data area (PDA), DEFINE and, 244

parentheses

built-in functions and, 117

free-format syntax in, 540

PARM, 187, 189, 323–326, 481, 482, 483

by value vs. by reference parameter passing and, 324

CALL and, 219, 323–326

CALLB and, 323–326

MOVEL and, 324

parameter lists (PLIST) and, 323–326

*PARMS and, 324

pointers, 324

prototyped calls and, 457–459

syntax diagram for, 197

Z-ADD and, 324

%PARMS, 117–118, 123, 162, 324

partial key lists, 501

PASS file specification keyword, 49

*PDA, 30

period (.) edit word control code, 93

PERRCD keyword, 65, 98–100

personal computer (PC) workstations, 517–518

*PGM compiler option, 543, 544

PGMNAME File specification keyword, 49

physical files, 497, 498–503

key fields in, 500–503

partial key lists in, 501

product structure file in, 502–503

PL/I, xxii, 6, 37, 106, 409

*PLACE, 30

PLIST (See parameter lists)

PLIST keyword, 49, 453–459

plus sign (+) operator, 104

pointer data type, 13

position-oriented languages, 3

position-oriented RPG IV, 4, 6

positive values, decimal data errors and 562–566

POST, 187, 329–330, 496, 521

syntax diagram for, 197

workstation device file processing and, 518

power function (**), 105–106

PREFIX keyword, 50, 66

preprocessor directives, 31–34, 33

PRINT key, 22

printer files, 79, 82, 205

priority of operators, 105–106

procedure expressions, 103

procedure interface, prototyped calls and, 462–463

procedure specifications, 4, 8, 9, 37, 89–90

procedures and subprocedures, 10, 395, 400, 421–423, 431, 473–491

application program interfaces (APIs) and, 489–491

application-specific, 476

arguments in, 480

CALL, CALLB, and CALLP in, 395, 399–401, 477–478, 479–489, 490

calling, 476–478

CEEDOD (Retrieve Operational Descriptor) and, 490–491

choice constructs in, 450

/COPY and, 479

Create Program (CRTPGM) and, 476

Create RPG Module (CRTRPGMOD) and, 476

data areas in, 467–471, 467

data structures and prototyped procedures in, 464–466

definition for, 478–480

definition specification and, 52

function modules in, 450

general-purpose, 476

hierarchy of modules in, 423, 451, 451

identification of, 479

IMPORT and EXPORT in, 403–405, 404, 405

inline ILE, 588–589

interface for, 479, 489–491

local variables and, 423

logic control modules in, 450

mainline, 476, 483, 484

modular programming benefits of, 449–451

module storage of, 475–476, 475

*MODULE and, 475, 484

multiple source files using, 401

*NOMAIN keyword and, 475, 484, 485

OPDESC keyword and, 489–490

parameter passing in, 452–460

PLIST for parameter passing in, 453–459

program entry point (PEP) and, 483–489

prototyped calls in, 460–464

prototyped procedure keywords for, 481–483

prototypes for, 478, 479

repetition constructs in, 450

RPG cycle and, 475, 484, 486

sequence constructs in, 450

source file structure of, using mainline procedure, 476, 485–489

static vs. automatic storage in, 402–403

top-down programming and, 450

user entry procedure (UEP) and, 484

user-written functions and, 477

user-written, 475–476

PROCPTR Definition specification keyword, 66

product structure file, 502–503

program binding, 395

program described files

CHAIN and, 229–231

EXCEPT and, 269–272

file specifications for, 43–51

Input specifications and, 68–73

Output specifications and, 80–85

WRITE and, 384–385

program design, 428

program entry point (PEP), 483–489

program hierarchy chart, 451, 451

program logic cycle, 397

program names, 395

program organization, 393–405

activation groups in, 400

application source files in, 401

bound modules vs. independent programs in, 399–400

CALL and, 399–401

Create Bound Program (CRTBNDRPG) and, 396, 400

Create RPG Module (CRTRPGMOD) and, 396–397, 400

embedded subprocedures in, 400

flat file systems and, 396–397

IMPORT and EXPORT in, 403–405, 404, 405

Integrated File System (IFS) in, 395–396

machine readable or executable objects in, 399

mainline procedure in, 395, 397, 397

module definition in, 397–401

*MODULE in, 395

multiple source files with embedded/external subprocedures, 401

NOMAIN keyword in, 397

program binding in, 395

program logic cycle in, 397

program names in, 395

scope in, 397, 401–402, 402

single-source file RPG programs in, 400

source file member contents in, 397

source files and source file location in, 395–397

source program structures in, 400

static vs. automatic storage in, 402–403

subprocedures in, 395

variables in, local vs. global, 397–402, 402

program status codes, PARM and, 202–203

program status data structure (PSDS), 52, 56, 521, 590

program termination indicator, 17

program-to-program calls, 452–460, 452

prototype name definition statement, prototyped calls and, 463

prototyped call interface, 455

prototyped calls, 460–464

CALLP and, 461, 463, 464

named parameter lists and, 463

procedure interface definition statement in, 463

procedure interface in, 462–463

prototype name definition statement in, 463

prototyped procedures

data structures and, 464–466

keywords for, 466, 481–483

prototypes

CALLP and, 223–224, 223

Definition specification and, 52

procedures and subprocedures, 478, 479

prototyped procedure keywords for, 481–483

ZINCLUDE source code listing, 581–582

PRTCTL File specification keyword, 50

pseudocode, 6

*PSSR, 30, 202, 214

PWRDWNSYS (Power Down System), SHTDN and, 360