[421b7d2] | 1 | /* useful.c |
---|
[caa8d8d] | 2 | * Copyright (C) 1993-2001,2003 Olly Betts |
---|
[846746e] | 3 | * |
---|
[89231c4] | 4 | * This program is free software; you can redistribute it and/or modify |
---|
| 5 | * it under the terms of the GNU General Public License as published by |
---|
| 6 | * the Free Software Foundation; either version 2 of the License, or |
---|
| 7 | * (at your option) any later version. |
---|
[846746e] | 8 | * |
---|
| 9 | * This program is distributed in the hope that it will be useful, |
---|
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
[89231c4] | 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
| 12 | * GNU General Public License for more details. |
---|
[846746e] | 13 | * |
---|
[89231c4] | 14 | * You should have received a copy of the GNU General Public License |
---|
| 15 | * along with this program; if not, write to the Free Software |
---|
[1b71c05] | 16 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
---|
[d1b1380] | 17 | */ |
---|
| 18 | |
---|
[a420b49] | 19 | #ifdef HAVE_CONFIG_H |
---|
| 20 | # include <config.h> |
---|
| 21 | #endif |
---|
[d1b1380] | 22 | |
---|
| 23 | #include "useful.h" |
---|
| 24 | #include "osdepend.h" |
---|
| 25 | |
---|
[f149799] | 26 | #ifndef WORDS_BIGENDIAN |
---|
[d1b1380] | 27 | |
---|
| 28 | /* used by macro versions of useful_get<nn> functions */ |
---|
[647407d] | 29 | INT16_T useful_w16; |
---|
| 30 | INT32_T useful_w32; |
---|
[d1b1380] | 31 | |
---|
[a420b49] | 32 | #if 0 /* these functions aren't needed - macros do the job */ |
---|
[d1b1380] | 33 | /* the numbers in the file are little endian, so use fread/fwrite */ |
---|
[caa8d8d] | 34 | extern void Far |
---|
[647407d] | 35 | useful_put16(INT16_T w, FILE *fh) |
---|
[a420b49] | 36 | { |
---|
| 37 | fwrite(&w, 2, 1, fh); |
---|
[d1b1380] | 38 | } |
---|
| 39 | |
---|
[a420b49] | 40 | #undef useful_put32 |
---|
[caa8d8d] | 41 | extern void Far |
---|
[647407d] | 42 | useful_put32(INT32_T w, FILE *fh) |
---|
[a420b49] | 43 | { |
---|
| 44 | fwrite(&w, 4, 1, fh); |
---|
[d1b1380] | 45 | } |
---|
| 46 | |
---|
[a420b49] | 47 | #undef useful_get16 |
---|
[caa8d8d] | 48 | extern INT16_T Far |
---|
[a420b49] | 49 | useful_get16(FILE *fh) |
---|
| 50 | { |
---|
[647407d] | 51 | INT16_T w; |
---|
[a420b49] | 52 | fread(&w, 2, 1, fh); |
---|
[d1b1380] | 53 | return w; |
---|
| 54 | } |
---|
| 55 | |
---|
[a420b49] | 56 | #undef useful_put32 |
---|
[caa8d8d] | 57 | extern INT32_T Far |
---|
[a420b49] | 58 | useful_get32(FILE *fh) |
---|
| 59 | { |
---|
[4beccdbc] | 60 | INT32_T w; |
---|
[a420b49] | 61 | fread(&w, 4, 1, fh); |
---|
[d1b1380] | 62 | return w; |
---|
| 63 | } |
---|
[a420b49] | 64 | #endif |
---|
[d1b1380] | 65 | |
---|
| 66 | #else |
---|
| 67 | |
---|
[caa8d8d] | 68 | extern void Far |
---|
[647407d] | 69 | useful_put16(INT16_T w, FILE *fh) |
---|
[a420b49] | 70 | { |
---|
| 71 | putc((char)(w), fh); |
---|
| 72 | putc((char)(w >> 8l), fh); |
---|
[d1b1380] | 73 | } |
---|
| 74 | |
---|
[caa8d8d] | 75 | extern void Far |
---|
[647407d] | 76 | useful_put32(INT32_T w, FILE *fh) |
---|
[a420b49] | 77 | { |
---|
| 78 | putc((char)(w), fh); |
---|
| 79 | putc((char)(w >> 8l), fh); |
---|
| 80 | putc((char)(w >> 16l), fh); |
---|
| 81 | putc((char)(w >> 24l), fh); |
---|
[d1b1380] | 82 | } |
---|
| 83 | |
---|
[caa8d8d] | 84 | extern INT16_T Far |
---|
[a420b49] | 85 | useful_get16(FILE *fh) |
---|
| 86 | { |
---|
[647407d] | 87 | INT16_T w; |
---|
[a420b49] | 88 | w = getc(fh); |
---|
[647407d] | 89 | w |= (INT16_T)(getc(fh) << 8l); |
---|
[d1b1380] | 90 | return w; |
---|
| 91 | } |
---|
| 92 | |
---|
[caa8d8d] | 93 | extern INT32_T Far |
---|
[a420b49] | 94 | useful_get32(FILE *fh) |
---|
| 95 | { |
---|
[647407d] | 96 | INT32_T w; |
---|
[a420b49] | 97 | w = getc(fh); |
---|
[4beccdbc] | 98 | w |= (INT32_T)(getc(fh) << 8l); |
---|
| 99 | w |= (INT32_T)(getc(fh) << 16l); |
---|
| 100 | w |= (INT32_T)(getc(fh) << 24l); |
---|
[d1b1380] | 101 | return w; |
---|
| 102 | } |
---|
| 103 | #endif |
---|