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