1*956e8222Scf46844 /* 2*956e8222Scf46844 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 3*956e8222Scf46844 * Use is subject to license terms. 4*956e8222Scf46844 */ 5*956e8222Scf46844 67c478bd9Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 77c478bd9Sstevel@tonic-gate /* All Rights Reserved */ 87c478bd9Sstevel@tonic-gate 97c478bd9Sstevel@tonic-gate 107c478bd9Sstevel@tonic-gate /* 117c478bd9Sstevel@tonic-gate * Copyright (c) 1980 Regents of the University of California. 127c478bd9Sstevel@tonic-gate * All rights reserved. The Berkeley software License Agreement 137c478bd9Sstevel@tonic-gate * specifies the terms and conditions for redistribution. 147c478bd9Sstevel@tonic-gate */ 157c478bd9Sstevel@tonic-gate 16*956e8222Scf46844 #pragma ident "%Z%%M% %I% %E% SMI" 177c478bd9Sstevel@tonic-gate 187c478bd9Sstevel@tonic-gate /* 197c478bd9Sstevel@tonic-gate * Sum bytes in file mod 2^16 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate 227c478bd9Sstevel@tonic-gate #include <stdio.h> 237c478bd9Sstevel@tonic-gate 24*956e8222Scf46844 int 25*956e8222Scf46844 main(int argc, char **argv) 267c478bd9Sstevel@tonic-gate { 27*956e8222Scf46844 unsigned int sum; 28*956e8222Scf46844 int i, c; 29*956e8222Scf46844 FILE *f; 30*956e8222Scf46844 long long nbytes; 317c478bd9Sstevel@tonic-gate int errflg = 0; 327c478bd9Sstevel@tonic-gate 337c478bd9Sstevel@tonic-gate i = 1; 347c478bd9Sstevel@tonic-gate do { 357c478bd9Sstevel@tonic-gate if(i < argc) { 367c478bd9Sstevel@tonic-gate if ((f = fopen(argv[i], "r")) == NULL) { 377c478bd9Sstevel@tonic-gate fprintf(stderr, "sum: Can't open %s\n", argv[i]); 387c478bd9Sstevel@tonic-gate errflg += 10; 397c478bd9Sstevel@tonic-gate continue; 407c478bd9Sstevel@tonic-gate } 417c478bd9Sstevel@tonic-gate } else 427c478bd9Sstevel@tonic-gate f = stdin; 437c478bd9Sstevel@tonic-gate sum = 0; 447c478bd9Sstevel@tonic-gate nbytes = 0; 457c478bd9Sstevel@tonic-gate while ((c = getc(f)) != EOF) { 467c478bd9Sstevel@tonic-gate nbytes++; 477c478bd9Sstevel@tonic-gate if (sum&01) 487c478bd9Sstevel@tonic-gate sum = (sum>>1) + 0x8000; 497c478bd9Sstevel@tonic-gate else 507c478bd9Sstevel@tonic-gate sum >>= 1; 517c478bd9Sstevel@tonic-gate sum += c; 527c478bd9Sstevel@tonic-gate sum &= 0xFFFF; 537c478bd9Sstevel@tonic-gate } 547c478bd9Sstevel@tonic-gate if (ferror(f)) { 557c478bd9Sstevel@tonic-gate errflg++; 567c478bd9Sstevel@tonic-gate fprintf(stderr, "sum: read error on %s\n", argc>1?argv[i]:"-"); 577c478bd9Sstevel@tonic-gate } 587c478bd9Sstevel@tonic-gate printf("%05u %5lld", sum, (nbytes+BUFSIZ-1)/BUFSIZ); 597c478bd9Sstevel@tonic-gate if(argc > 2) 607c478bd9Sstevel@tonic-gate printf(" %s", argv[i]); 617c478bd9Sstevel@tonic-gate printf("\n"); 627c478bd9Sstevel@tonic-gate fclose(f); 637c478bd9Sstevel@tonic-gate } while(++i < argc); 64*956e8222Scf46844 return (errflg); 657c478bd9Sstevel@tonic-gate } 66