cc65/include/cc65.h

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/*                                                                           */
/*                                  cc65.h                                   */
/*                                                                           */
/*          Target independent but cc65 specific utility functions           */
/*                                                                           */
/*                                                                           */
/*                                                                           */
/* (C) 2009-2011, Ullrich von Bassewitz                                      */
/*                Roemerstrasse 52                                           */
/*                D-70794 Filderstadt                                        */
/* EMail:         uz@cc65.org                                                */
/*                                                                           */
/*                                                                           */
/* This software is provided 'as-is', without any expressed or implied       */
/* warranty.  In no event will the authors be held liable for any damages    */
/* arising from the use of this software.                                    */
/*                                                                           */
/* Permission is granted to anyone to use this software for any purpose,     */
/* including commercial applications, and to alter it and redistribute it    */
/* freely, subject to the following restrictions:                            */
/*                                                                           */
/* 1. The origin of this software must not be misrepresented; you must not   */
/*    claim that you wrote the original software. If you use this software   */
/*    in a product, an acknowledgment in the product documentation would be  */
/*    appreciated but is not required.                                       */
/* 2. Altered source versions must be plainly marked as such, and must not   */
/*    be misrepresented as being the original software.                      */
/* 3. This notice may not be removed or altered from any source              */
/*    distribution.                                                          */
/*                                                                           */
/*****************************************************************************/



#ifndef _CC65_H
#define _CC65_H



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/*                                   Code                                    */
/*****************************************************************************/



long __fastcall__ idiv32by16r16 (long rhs, int lhs);
/* Divide a 32 bit signed value by a 16 bit signed value yielding a 16
** bit result and a 16 bit remainder. The former is returned in the lower 16
** bit of the result, the latter in the upper. If you don't need the
** remainder, just assign (or cast) to an int.
*/

unsigned long __fastcall__ udiv32by16r16 (unsigned long rhs, unsigned lhs);
/* Divide a 32 bit unsigned value by a 16 bit unsigned value yielding a 16
** bit result and a 16 bit remainder. The former is returned in the lower 16
** bit of the result, the latter in the upper. If you don't need the
** remainder, just assign (or cast) to an unsigned.
*/

int __fastcall__ imul8x8r16 (signed char lhs, signed char rhs);
/* Multiply two signed 8 bit to yield an signed 16 bit result */

long __fastcall__ imul16x16r32 (int lhs, int rhs);
/* Multiply two signed 16 bit to yield a signed 32 bit result */

unsigned __fastcall__ umul8x8r16 (unsigned char lhs, unsigned char rhs);
/* Multiply two unsigned 8 bit to yield an unsigned 16 bit result */

unsigned long __fastcall__ umul16x8r32 (unsigned lhs, unsigned char rhs);
/* Multiply an unsigned 16 bit by an unsigned 8 bit number yielding a 24
** bit unsigned result that is extended to 32 bits for easier handling from C.
*/

unsigned long __fastcall__ umul16x16r32 (unsigned lhs, unsigned rhs);
/* Multiply two unsigned 16 bit to yield an unsigned 32 bit result */

unsigned int __fastcall__ mul20 (unsigned char value);
/* Multiply an 8 bit unsigned value by 20 and return the 16 bit unsigned
** result
*/

unsigned int __fastcall__ mul40 (unsigned char value);
/* Multiply an 8 bit unsigned value by 40 and return the 16 bit unsigned
** result
*/

int __fastcall__ _sin (unsigned x);
/* Return the sine of the argument, which must be in range 0..360. The result
** is in 8.8 fixed point format, which means that 1.0 = $100 and -1.0 = $FF00.
*/

int __fastcall__ _cos (unsigned x);
/* Return the cosine of the argument, which must be in range 0..360. The result
** is in 8.8 fixed point format, which means that 1.0 = $100 and -1.0 = $FF00.
*/

unsigned char doesclrscrafterexit (void);
/* Indicates whether the screen automatically be cleared after program
** termination.
*/



/* End of cc65.h */
#endif