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95 lines
4.7 KiB
C
95 lines
4.7 KiB
C
/*****************************************************************************/
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/* */
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/* cc65.h */
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/* */
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/* Target independent but cc65 specific utility functions */
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/* */
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/* */
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/* */
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/* (C) 2009-2011, Ullrich von Bassewitz */
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/* Roemerstrasse 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#ifndef _CC65_H
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#define _CC65_H
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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long __fastcall__ cc65_idiv32by16r16 (long rhs, int lhs);
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/* Divide a 32 bit signed value by a 16 bit signed value yielding a 16
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** bit result and a 16 bit remainder. The former is returned in the lower 16
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** bit of the result, the latter in the upper. If you don't need the
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** remainder, just assign (or cast) to an int.
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*/
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unsigned long __fastcall__ cc65_udiv32by16r16 (unsigned long rhs, unsigned lhs);
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/* Divide a 32 bit unsigned value by a 16 bit unsigned value yielding a 16
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** bit result and a 16 bit remainder. The former is returned in the lower 16
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** bit of the result, the latter in the upper. If you don't need the
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** remainder, just assign (or cast) to an unsigned.
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*/
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int __fastcall__ cc65_imul8x8r16 (signed char lhs, signed char rhs);
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/* Multiplicate two signed 8 bit to yield an signed 16 bit result */
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long __fastcall__ cc65_imul16x16r32 (int lhs, int rhs);
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/* Multiplicate two signed 16 bit to yield a signed 32 bit result */
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unsigned __fastcall__ cc65_umul8x8r16 (unsigned char lhs, unsigned char rhs);
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/* Multiplicate two unsigned 8 bit to yield an unsigned 16 bit result */
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unsigned long __fastcall__ cc65_umul16x8r32 (unsigned lhs, unsigned char rhs);
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/* Multiplicate an unsigned 16 bit by an unsigned 8 bit number yielding a 24
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** bit unsigned result that is extended to 32 bits for easier handling from C.
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*/
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unsigned long __fastcall__ cc65_umul16x16r32 (unsigned lhs, unsigned rhs);
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/* Multiplicate two unsigned 16 bit to yield an unsigned 32 bit result */
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int __fastcall__ cc65_sin (unsigned x);
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/* Return the sine of the argument, which must be in range 0..360. The result
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** is in 8.8 fixed point format, which means that 1.0 = $100 and -1.0 = $FF00.
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*/
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int __fastcall__ cc65_cos (unsigned x);
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/* Return the cosine of the argument, which must be in range 0..360. The result
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** is in 8.8 fixed point format, which means that 1.0 = $100 and -1.0 = $FF00.
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*/
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/* End of cc65.h */
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#endif
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