gno/sys/fileport/includes/Portable.C.h

1 line
2.8 KiB
C

/*
* Copyright (c) Kopriha Software, 1990
* All Rights Reserved
*
* Portable.C.h
*
* Description: This include file contains all the portable C language
* definitions for Font Forge.
*
*
* Table of contents:
*
* Structures:
*
* Macros:
*
* COPY_BYTES . . . . . . . . . . Copy bytes from one place to another
* MAX . . . . . . . . . . . . . Return the maximum of two values
* MIN . . . . . . . . . . . . . Return the minimum of two values
* TO_POINTER . . . . . . . . . . Convert some pointer type to Pointer
* ZERO . . . . . . . . . . . . . Initialize a structure to zero
*
*
* Notes: Wherever possible, the macros defined in this module
* will be used!!!!
*
* History:August 10, 1990 Dave Created this file
*
*/
#ifndef _PORTABLE_C_
#define _PORTABLE_C_
#ifndef __stddef__
#include <stddef.h>
#endif
/*
* COPY_BYTES() - Copies the specified number of bytes
*/
#define COPY_BYTES(_src_ptr, _src_offset, _dest_ptr, _dest_offset, _size)\
\
BlockMove( &(((char *) (_src_ptr))[(_src_offset)]), \
&(((char *) (_dest_ptr))[(_dest_offset)]), \
(Long) (_size))
/*
* GET_ERROR() - returns the error from the last toolbox call.
* Use this macro only in a assignment statement
* (IE: z = MAX(x,y);)
*/
#define GET_ERROR() \
\
toolerror()
/*
* MAX(a,b) - returns the minimum value, use this macro only
* in a assignment statement (IE: z = MAX(x,y);)
*/
#define MAX(_arg1, _arg2) \
\
(((_arg1) > (_arg2)) ? (_arg1) : (_arg2))
/*
* MIN(a,b) - returns the minimum value, use this macro only
* in a assignment statement (IE: z = MIN(x,y);)
*/
#define MIN(_arg1, _arg2) \
\
(((_arg1) < (_arg2)) ? (_arg1) : (_arg2))
/*
* TO_POINTER(some_pointer) - returns some_pointer typecase as
* a Pointer. Use this macro only in a assignment
* statement (IE: z = MIN(x,y);)
*/
#define TO_POINTER(_some_pointer) \
\
((Pointer) (_some_pointer))
/*
* ZERO(structure) - sets a structure to zero.
*/
#define ZERO(_struct) \
\
memset( (char *) &(_struct), \
0, \
((size_t) sizeof(_struct)) )
#endif