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wvec_rdot.c
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/***************** wvec_rdot.c (in su3.a) ******************************
* *
* Real wvec_rdot( wilson_vector *a, wilson_vector *b ) *
* return real part of dot product of two wilson_vectors *
*/
#include "../include/config.h"
#include "../include/complex.h"
#include "../include/su3.h"
Real wvec_rdot( wilson_vector *a, wilson_vector *b ){
#ifndef FAST
register Real temp1,temp2;
register int i;
temp2=0.0;
for(i=0;i<4;i++){
temp1 = a->d[i].c[0].real * b->d[i].c[0].real; temp2 += temp1;
temp1 = a->d[i].c[0].imag * b->d[i].c[0].imag; temp2 += temp1;
temp1 = a->d[i].c[1].real * b->d[i].c[1].real; temp2 += temp1;
temp1 = a->d[i].c[1].imag * b->d[i].c[1].imag; temp2 += temp1;
temp1 = a->d[i].c[2].real * b->d[i].c[2].real; temp2 += temp1;
temp1 = a->d[i].c[2].imag * b->d[i].c[2].imag; temp2 += temp1;
}
return(temp2);
#else
#ifndef NATIVEDOUBLE
register double ar,ai,br,bi,ss;
#else
register Real ar,ai,br,bi,ss;
#endif
ar=a->d[0].c[0].real; ai=a->d[0].c[0].imag;
br=b->d[0].c[0].real; bi=b->d[0].c[0].imag;
ss = ar*br + ai*bi;
ar=a->d[0].c[1].real; ai=a->d[0].c[1].imag;
br=b->d[0].c[1].real; bi=b->d[0].c[1].imag;
ss += ar*br + ai*bi;
ar=a->d[0].c[2].real; ai=a->d[0].c[2].imag;
br=b->d[0].c[2].real; bi=b->d[0].c[2].imag;
ss += ar*br + ai*bi;
ar=a->d[1].c[0].real; ai=a->d[1].c[0].imag;
br=b->d[1].c[0].real; bi=b->d[1].c[0].imag;
ss += ar*br + ai*bi;
ar=a->d[1].c[1].real; ai=a->d[1].c[1].imag;
br=b->d[1].c[1].real; bi=b->d[1].c[1].imag;
ss += ar*br + ai*bi;
ar=a->d[1].c[2].real; ai=a->d[1].c[2].imag;
br=b->d[1].c[2].real; bi=b->d[1].c[2].imag;
ss += ar*br + ai*bi;
ar=a->d[2].c[0].real; ai=a->d[2].c[0].imag;
br=b->d[2].c[0].real; bi=b->d[2].c[0].imag;
ss += ar*br + ai*bi;
ar=a->d[2].c[1].real; ai=a->d[2].c[1].imag;
br=b->d[2].c[1].real; bi=b->d[2].c[1].imag;
ss += ar*br + ai*bi;
ar=a->d[2].c[2].real; ai=a->d[2].c[2].imag;
br=b->d[2].c[2].real; bi=b->d[2].c[2].imag;
ss += ar*br + ai*bi;
ar=a->d[3].c[0].real; ai=a->d[3].c[0].imag;
br=b->d[3].c[0].real; bi=b->d[3].c[0].imag;
ss += ar*br + ai*bi;
ar=a->d[3].c[1].real; ai=a->d[3].c[1].imag;
br=b->d[3].c[1].real; bi=b->d[3].c[1].imag;
ss += ar*br + ai*bi;
ar=a->d[3].c[2].real; ai=a->d[3].c[2].imag;
br=b->d[3].c[2].real; bi=b->d[3].c[2].imag;
ss += ar*br + ai*bi;
return(ss);
#endif
}