3 * $Id: arith24.h,v 1.2 2000/07/02 15:21:20 mdw Exp $
5 * Arithmetic mod %$2^{24}$%
7 * (c) 2000 Mark Wooding
10 /*----- Licensing notice --------------------------------------------------*
12 * Copyright (c) 2000 Mark Wooding
13 * All rights reserved.
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16 * modification, are permitted provided that the following conditions are
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20 * notice, this list of conditions and the following disclaimer.
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24 * documentation and/or other materials provided with the distribution.
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27 * products derived from this software without specific prior written
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49 /*----- Revision history --------------------------------------------------*
52 * Revision 1.2 2000/07/02 15:21:20 mdw
55 * Revision 1.1 2000/05/21 11:28:30 mdw
67 /*----- Header files ------------------------------------------------------*/
73 /*----- Functions provided ------------------------------------------------*/
77 * Arguments: @uint24 x@ = a number to invert
79 * Returns: The multiplicative inverse %$x^{-1}$% of %$x$% (mod
80 * %$2^{24}$%, if %$x$% is odd, or zero if %$x$% is even (and
81 * hence uninvertible).
83 * Use: Computes multiplicative inverses mod %$2^{24}$%.
86 extern uint24
inv24(uint24
/*x*/);
88 /*----- That's all, folks -------------------------------------------------*/