k6opt.h

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/* k6opt.h  vector functions optimized for MMX extensions to x86
 *
 * Copyright (C) 1999 by Stanley J. Brooks <stabro@megsinet.net>
 *
 * Any use of this software is permitted provided that this notice is not
 * removed and that neither the authors nor the Technische Universitaet Berlin
 * are deemed to have made any representations as to the suitability of this
 * software for any purpose nor are held responsible for any defects of
 * this software.  THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE;
 * not even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE.
 *
 * Chicago, 03.12.1999
 * Stanley J. Brooks
 */
 
extern void Weighting_filter P2((e, x),
    const word  * e,    /* signal [-5..0.39.44] IN  */
    word    * x     /* signal [0..39]   OUT */
)
;
 
extern longword k6maxcc P3((wt,dp,Nc_out),
    const word *wt,
    const word *dp,
    word        * Nc_out    /*      OUT */
)
;
/*
 * k6maxmin(p,n,out[])
 *  input p[n] is array of shorts (require n>0)
 *  returns (long) maximum absolute value..
 *  if out!=NULL, also returns out[0] the maximum and out[1] the minimum
 */
extern longword k6maxmin P3((p,n,out),
    const word *p,
    int n,
    word *out   /*      out[0] is max, out[1] is min */
)
;
 
extern longword k6iprod P3((p,q,n),
    const word *p,
    const word *q,
    int n
)
;
 
/*
 * k6vsraw(p,n,bits)
 *  input p[n] is array of shorts (require n>0)
 *  shift/round each to the right by bits>=0 bits.
 */
extern void k6vsraw P3((p,n,bits),
    const word *p,
    int n,
    int bits
)
;
 
/*
 * k6vsllw(p,n,bits)
 *  input p[n] is array of shorts (require n>0)
 *  shift each to the left by bits>=0 bits.
 */
extern void k6vsllw P3((p,n,bits),
    const word *p,
    int n,
    int bits
)
;
 
#if 1  /* there isn't any significant speed gain from mmx here: */
extern void Short_term_analysis_filteringx P4((u0,rp0,k_n,s),
    register word * u0,
    register word   * rp0,  /* [0..7]   IN  */
    register int    k_n,    /*   k_end - k_start    */
    register word   * s /* [0..n-1] IN/OUT  */
)
;
/*
#define Short_term_analysis_filtering Short_term_analysis_filteringx
*/
#endif