/* Copyright (C) 1988-1991 Apple Computer, Inc. * All Rights Reserved. * * Warranty Information * Even though Apple has reviewed this software, Apple makes no warranty * or representation, either express or implied, with respect to this * software, its quality, accuracy, merchantability, or fitness for a  * particular purpose.  As a result, this software is provided "as is," * and you, its user, are assuming the entire risk as to its quality * and accuracy. * * This code may be used and freely distributed as long as it includes * this copyright notice and the warranty information. * * * Motorola processors (Macintosh, Sun, Sparc, MIPS, etc) * pack bytes from high to low (they are big-endian). * Use the HighLow routines to match the native format * of these machines. * * Intel-like machines (PCs, Sequent) * pack bytes from low to high (the are little-endian). * Use the LowHigh routines to match the native format * of these machines. * * These routines have been tested on the following machines: *	Apple Macintosh, MPW 3.1 C compiler *	Apple Macintosh, THINK C compiler *	Silicon Graphics IRIS, MIPS compiler *	Cray X/MP and Y/MP *	Digital Equipment VAX * * * Implemented by Malcolm Slaney and Ken Turkowski. * * Malcolm Slaney contributions during 1988-1990 include big- and little- * endian file I/O, conversion to and from Motorola's extended 80-bit * floating-point format, and conversions to and from IEEE single- * precision floating-point format. * * In 1991, Ken Turkowski implemented the conversions to and from * IEEE double-precision format, added more precision to the extended * conversions, and accommodated conversions involving +/- infinity, * NaN's, and denormalized numbers. * * $Id: portableio.c,v 2.6 1991/04/30 17:06:02 malcolm Exp $ * * $Log: portableio.c,v $ * Revision 2.6  91/04/30  17:06:02  malcolm */#include	<stdio.h>#include	<math.h>#include    "./libmp3enc/libmp3enc.h"#include	"portableio.h"/**************************************************************** * Big/little-endian independent I/O routines. ****************************************************************/i32ReadByte(fp)FILE *fp;{	i32	result;	result = getc(fp) & 0xff;	if (result & 0x80)		result = result - 0x100;	return result;}i32Read16BitsLowHigh(fp)FILE *fp;{	i32	first, second, result;	first = 0xff & getc(fp);	second = 0xff & getc(fp);	result = (second << 8) + first;#ifndef	THINK_C42	if (result & 0x8000)		result = result - 0x10000;#endif	/* THINK_C */	return(result);}i32Read16BitsHighLow(fp)FILE *fp;{	i32	first, second, result;	first = 0xff & getc(fp);	second = 0xff & getc(fp);	result = (first << 8) + second;#ifndef	THINK_C42	if (result & 0x8000)		result = result - 0x10000;#endif	/* THINK_C */	return(result);}voidWrite8Bits(fp, i)FILE *fp;i32 i;{	putc(i&0xff,fp);}voidWrite16BitsLowHigh(fp, i)FILE *fp;i32 i;{	putc(i&0xff,fp);	putc((i>>8)&0xff,fp);}voidWrite16BitsHighLow(fp, i)FILE *fp;i32 i;{	putc((i>>8)&0xff,fp);	putc(i&0xff,fp);}#define	Read32BitsLowHigh(f)	Read32Bits(f)i32Read32Bits(fp)FILE *fp;{	i32	first, second, result;	first = 0xffff & Read16BitsLowHigh(fp);	second = 0xffff & Read16BitsLowHigh(fp);	result = (second << 16) + first;#ifdef	CRAY	if (result & 0x80000000)		result = result - 0x100000000;#endif	/* CRAY */	return(result);}i32Read32BitsHighLow(fp)FILE *fp;{	i32	first, second, result;	first = 0xffff & Read16BitsHighLow(fp);	second = 0xffff & Read16BitsHighLow(fp);	result = (first << 16) + second;#ifdef	CRAY	if (result & 0x80000000)		result = result - 0x100000000;#endif	return(result);}void ReadBytes(fp, p, n)FILE	*fp;i8	*p;i32	n;{	while ((!feof(fp)) & ((n--) > 0))		*p++ = getc(fp);}defdouble ReadIeeeExtendedHighLow(fp)FILE *fp;{	i8	bits[kExtendedLength];	ReadBytes(fp, bits, kExtendedLength);	return ConvertFromIeeeExtended(bits);}