hmz007
36ed224bac
Signed-off-by: hmz007 <hmz007@gmail.com> Change-Id: Ib87fdbe7a0be7dc961af3500fe9ea4589a127f9f
95 lines
1.8 KiB
C
95 lines
1.8 KiB
C
/* 16-bit signed integer dot product
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* Switch to appropriate versions
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* Copyright 2004 Phil Karn
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* May be used under the terms of the GNU Lesser General Public License (LGPL)
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*/
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#include <stdlib.h>
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#include "fec.h"
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void *initdp_port(signed short coeffs[],int len);
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long dotprod_port(void *p,signed short *b);
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void freedp_port(void *p);
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#ifdef __i386__
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void *initdp_mmx(signed short coeffs[],int len);
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void *initdp_sse2(signed short coeffs[],int len);
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long dotprod_mmx(void *p,signed short *b);
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long dotprod_sse2(void *p,signed short *b);
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void freedp_mmx(void *p);
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void freedp_sse2(void *p);
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#endif
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#ifdef __VEC__
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void *initdp_av(signed short coeffs[],int len);
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long dotprod_av(void *p,signed short *b);
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void freedp_av(void *p);
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#endif
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/* Create and return a descriptor for use with the dot product function */
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void *initdp(signed short coeffs[],int len){
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find_cpu_mode();
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switch(Cpu_mode){
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case PORT:
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default:
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return initdp_port(coeffs,len);
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#ifdef __i386__
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case MMX:
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case SSE:
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return initdp_mmx(coeffs,len);
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case SSE2:
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return initdp_sse2(coeffs,len);
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#endif
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#ifdef __VEC__
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case ALTIVEC:
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return initdp_av(coeffs,len);
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#endif
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}
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}
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/* Free a dot product descriptor created earlier */
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void freedp(void *p){
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switch(Cpu_mode){
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case PORT:
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default:
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#ifdef __i386__
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case MMX:
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case SSE:
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return freedp_mmx(p);
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case SSE2:
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return freedp_sse2(p);
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#endif
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#ifdef __VEC__
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case ALTIVEC:
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return freedp_av(p);
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#endif
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}
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}
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/* Compute a dot product given a descriptor and an input array
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* The length is taken from the descriptor
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*/
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long dotprod(void *p,signed short a[]){
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switch(Cpu_mode){
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case PORT:
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default:
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return dotprod_port(p,a);
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#ifdef __i386__
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case MMX:
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case SSE:
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return dotprod_mmx(p,a);
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case SSE2:
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return dotprod_sse2(p,a);
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#endif
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#ifdef __VEC__
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case ALTIVEC:
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return dotprod_av(p,a);
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#endif
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}
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}
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