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portableio
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1996-03-28
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96 lines
#ifndef PORTABLEIO_H__
#define PORTABLEIO_H__
/* 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.
*
* Machine-independent I/O routines for 8-, 16-, 24-, and 32-bit integers.
*
* 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.h,v 2.6 1991/04/30 17:06:02 malcolm Exp $
*
* $Log: portableio.h,v $
* Revision 2.6 91/04/30 17:06:02 malcolm
*/
#include <stdio.h>
#include "ieeefloat.h"
#ifndef __cplusplus
# define CLINK
#else
# define CLINK "C"
#endif
extern CLINK int ReadByte(FILE *fp);
extern CLINK int Read16BitsLowHigh(FILE *fp);
extern CLINK int Read16BitsHighLow(FILE *fp);
extern CLINK void Write8Bits(FILE *fp, int i);
extern CLINK void Write16BitsLowHigh(FILE *fp, int i);
extern CLINK void Write16BitsHighLow(FILE *fp, int i);
extern CLINK int Read24BitsHighLow(FILE *fp);
extern CLINK int Read32Bits(FILE *fp);
extern CLINK int Read32BitsHighLow(FILE *fp);
extern CLINK void Write32Bits(FILE *fp, int i);
extern CLINK void Write32BitsLowHigh(FILE *fp, int i);
extern CLINK void Write32BitsHighLow(FILE *fp, int i);
extern CLINK void ReadBytes(FILE *fp, char *p, int n);
extern CLINK void ReadBytesSwapped(FILE *fp, char *p, int n);
extern CLINK void WriteBytes(FILE *fp, char *p, int n);
extern CLINK void WriteBytesSwapped(FILE *fp, char *p, int n);
extern CLINK defdouble ReadIeeeFloatHighLow(FILE *fp);
extern CLINK defdouble ReadIeeeFloatLowHigh(FILE *fp);
extern CLINK defdouble ReadIeeeDoubleHighLow(FILE *fp);
extern CLINK defdouble ReadIeeeDoubleLowHigh(FILE *fp);
extern CLINK defdouble ReadIeeeExtendedHighLow(FILE *fp);
extern CLINK defdouble ReadIeeeExtendedLowHigh(FILE *fp);
extern CLINK void WriteIeeeFloatLowHigh(FILE *fp, defdouble num);
extern CLINK void WriteIeeeFloatHighLow(FILE *fp, defdouble num);
extern CLINK void WriteIeeeDoubleLowHigh(FILE *fp, defdouble num);
extern CLINK void WriteIeeeDoubleHighLow(FILE *fp, defdouble num);
extern CLINK void WriteIeeeExtendedLowHigh(FILE *fp, defdouble num);
extern CLINK void WriteIeeeExtendedHighLow(FILE *fp, defdouble num);
#define Read32BitsLowHigh(f) Read32Bits(f)
#define WriteString(f,s) fwrite(s,strlen(s),sizeof(char),f)
#endif