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toruurakawa/gist:4130129

Created November 22, 2012 09:14
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gistfile1.txt
void mul2_SSE(double x, double xx, double y, double yy, double* z, double* zz){
double c, cc;
mul12_SSE( x, y, &c, &cc);
__m128d x_y = {x, y};
__m128d yy_xx = {yy, xx};
__m128d xyy_yxx = _mm_mul_pd(x_y, yy_xx);
__m128d cc_cc = {cc, cc};
cc_cc = _mm_add_pd(_mm_add_pd(xyy_yxx, _mm_shuffle_pd(xyy_yxx, xyy_yxx, 1)), cc_cc);
__m128d c_cSubz = {c, c-*z};
__m128d res = _mm_add_pd(c_cSubz, cc_cc);
_mm_storel_pd(z, res);
_mm_storeh_pd(zz, res);
}
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