?? fowrdfilt.c
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/* This material contains proprietary software of Entropic Processing, Inc. Any reproduction, distribution, or publication without the the prior written permission of Entropic Processing, Inc. is strictly prohibited. Any public distribution of copies of this work authorized in writing by Entropic Processing, Inc. must bear the notice Copyright 1986, Entropic Proccessing, Inc (C) 1985, Entropic Processing, Inc. */#ifdef SCCSstatic char *sccsid = "@(#)fowrdfilt.c 1.1 5/8/86";#endif /* perform forward filtering */float fowrd_filter (c, state, order, input)float c[], state[], input;int order;{ int j; double t = input; for (j = 1; j <= order; j++) t += c[j] * state[j]; for (j = order; j > 1; j--) state[j] = state[j - 1]; state[1] = t; return (t);}
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