--- /dev/null
+/***************************************************************************
+Copyright (c) 2014, The OpenBLAS Project
+All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+1. Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in
+the documentation and/or other materials provided with the
+distribution.
+3. Neither the name of the OpenBLAS project nor the names of
+its contributors may be used to endorse or promote products
+derived from this software without specific prior written permission.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*****************************************************************************/
+
+
+#include "common.h"
+
+
+#define NBMAX 1024
+
+#ifndef HAVE_KERNEL_16x4
+
+static void zgemv_kernel_16x4(BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y)
+{
+ BLASLONG i;
+ FLOAT *a0,*a1,*a2,*a3;
+ a0 = ap[0];
+ a1 = ap[1];
+ a2 = ap[2];
+ a3 = ap[3];
+
+ for ( i=0; i< 2*n; i+=2 )
+ {
+#if !defined(CONJ)
+#if !defined(XCONJ)
+ y[i] += a0[i]*x[0] - a0[i+1] * x[1];
+ y[i+1] += a0[i]*x[1] + a0[i+1] * x[0];
+ y[i] += a1[i]*x[2] - a1[i+1] * x[3];
+ y[i+1] += a1[i]*x[3] + a1[i+1] * x[2];
+ y[i] += a2[i]*x[4] - a2[i+1] * x[5];
+ y[i+1] += a2[i]*x[5] + a2[i+1] * x[4];
+ y[i] += a3[i]*x[6] - a3[i+1] * x[7];
+ y[i+1] += a3[i]*x[7] + a3[i+1] * x[6];
+#else
+ y[i] += a0[i]*x[0] + a0[i+1] * x[1];
+ y[i+1] += a0[i]*x[1] - a0[i+1] * x[0];
+ y[i] += a1[i]*x[2] + a1[i+1] * x[3];
+ y[i+1] += a1[i]*x[3] - a1[i+1] * x[2];
+ y[i] += a2[i]*x[4] + a2[i+1] * x[5];
+ y[i+1] += a2[i]*x[5] - a2[i+1] * x[4];
+ y[i] += a3[i]*x[6] + a3[i+1] * x[7];
+ y[i+1] += a3[i]*x[7] - a3[i+1] * x[6];
+#endif
+#else
+#if !defined(XCONJ)
+ y[i] += a0[i]*x[0] + a0[i+1] * x[1];
+ y[i+1] -= a0[i]*x[1] - a0[i+1] * x[0];
+ y[i] += a1[i]*x[2] + a1[i+1] * x[3];
+ y[i+1] -= a1[i]*x[3] - a1[i+1] * x[2];
+ y[i] += a2[i]*x[4] + a2[i+1] * x[5];
+ y[i+1] -= a2[i]*x[5] - a2[i+1] * x[4];
+ y[i] += a3[i]*x[6] + a3[i+1] * x[7];
+ y[i+1] -= a3[i]*x[7] - a3[i+1] * x[6];
+
+#else
+ y[i] += a0[i]*x[0] - a0[i+1] * x[1];
+ y[i+1] -= a0[i]*x[1] + a0[i+1] * x[0];
+ y[i] += a1[i]*x[2] - a1[i+1] * x[3];
+ y[i+1] -= a1[i]*x[3] + a1[i+1] * x[2];
+ y[i] += a2[i]*x[4] - a2[i+1] * x[5];
+ y[i+1] -= a2[i]*x[5] + a2[i+1] * x[4];
+ y[i] += a3[i]*x[6] - a3[i+1] * x[7];
+ y[i+1] -= a3[i]*x[7] + a3[i+1] * x[6];
+
+#endif
+#endif
+ }
+}
+
+#endif
+
+static void zgemv_kernel_16x1(BLASLONG n, FLOAT *ap, FLOAT *x, FLOAT *y)
+{
+ BLASLONG i;
+ FLOAT *a0;
+ a0 = ap;
+
+ for ( i=0; i< 2*n; i+=2 )
+ {
+#if !defined(CONJ)
+#if !defined(XCONJ)
+ y[i] += a0[i]*x[0] - a0[i+1] * x[1];
+ y[i+1] += a0[i]*x[1] + a0[i+1] * x[0];
+#else
+ y[i] += a0[i]*x[0] + a0[i+1] * x[1];
+ y[i+1] += a0[i]*x[1] - a0[i+1] * x[0];
+#endif
+#else
+#if !defined(XCONJ)
+ y[i] += a0[i]*x[0] + a0[i+1] * x[1];
+ y[i+1] -= a0[i]*x[1] - a0[i+1] * x[0];
+
+#else
+ y[i] += a0[i]*x[0] - a0[i+1] * x[1];
+ y[i+1] -= a0[i]*x[1] + a0[i+1] * x[0];
+#endif
+#endif
+
+ }
+}
+
+
+static void zero_y(BLASLONG n, FLOAT *dest)
+{
+ BLASLONG i;
+ for ( i=0; i<2*n; i++ )
+ {
+ *dest = 0.0;
+ dest++;
+ }
+}
+
+
+
+static void add_y(BLASLONG n, FLOAT *src, FLOAT *dest, BLASLONG inc_dest)
+{
+ BLASLONG i;
+ for ( i=0; i<n; i++ )
+ {
+ *dest += *src;
+#if ( !defined(CONJ) && !defined(XCONJ) ) || ( defined(CONJ) && defined(XCONJ) )
+ *(dest+1) += *(src+1);
+#else
+ *(dest+1) -= *(src+1);
+#endif
+ src+=2;
+ dest += inc_dest;
+ }
+}
+
+int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT alpha_r,FLOAT alpha_i, FLOAT *a, BLASLONG lda, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT *buffer)
+{
+ BLASLONG i;
+ BLASLONG j;
+ FLOAT *a_ptr;
+ FLOAT *x_ptr;
+ FLOAT *y_ptr;
+ FLOAT *ap[4];
+ BLASLONG n1;
+ BLASLONG m1;
+ BLASLONG m2;
+ BLASLONG n2;
+ FLOAT xbuffer[8],*ybuffer;
+
+ ybuffer = buffer;
+
+ inc_x *= 2;
+ inc_y *= 2;
+ lda *= 2;
+
+ n1 = n / 4 ;
+ n2 = n % 4 ;
+
+ m1 = m - ( m % 16 );
+ m2 = (m % NBMAX) - (m % 16) ;
+
+ y_ptr = y;
+
+ BLASLONG NB = NBMAX;
+
+ while ( NB == NBMAX )
+ {
+
+ m1 -= NB;
+ if ( m1 < 0)
+ {
+ if ( m2 == 0 ) break;
+ NB = m2;
+ }
+
+ a_ptr = a;
+ x_ptr = x;
+ zero_y(NB,ybuffer);
+ for( i = 0; i < n1 ; i++)
+ {
+
+#if !defined(XCONJ)
+ xbuffer[0] = alpha_r * x_ptr[0] - alpha_i * x_ptr[1];
+ xbuffer[1] = alpha_r * x_ptr[1] + alpha_i * x_ptr[0];
+ x_ptr += inc_x;
+ xbuffer[2] = alpha_r * x_ptr[0] - alpha_i * x_ptr[1];
+ xbuffer[3] = alpha_r * x_ptr[1] + alpha_i * x_ptr[0];
+ x_ptr += inc_x;
+ xbuffer[4] = alpha_r * x_ptr[0] - alpha_i * x_ptr[1];
+ xbuffer[5] = alpha_r * x_ptr[1] + alpha_i * x_ptr[0];
+ x_ptr += inc_x;
+ xbuffer[6] = alpha_r * x_ptr[0] - alpha_i * x_ptr[1];
+ xbuffer[7] = alpha_r * x_ptr[1] + alpha_i * x_ptr[0];
+ x_ptr += inc_x;
+#else
+ xbuffer[0] = alpha_r * x_ptr[0] + alpha_i * x_ptr[1];
+ xbuffer[1] = alpha_r * x_ptr[1] - alpha_i * x_ptr[0];
+ x_ptr += inc_x;
+ xbuffer[2] = alpha_r * x_ptr[0] + alpha_i * x_ptr[1];
+ xbuffer[3] = alpha_r * x_ptr[1] - alpha_i * x_ptr[0];
+ x_ptr += inc_x;
+ xbuffer[4] = alpha_r * x_ptr[0] + alpha_i * x_ptr[1];
+ xbuffer[5] = alpha_r * x_ptr[1] - alpha_i * x_ptr[0];
+ x_ptr += inc_x;
+ xbuffer[6] = alpha_r * x_ptr[0] + alpha_i * x_ptr[1];
+ xbuffer[7] = alpha_r * x_ptr[1] - alpha_i * x_ptr[0];
+ x_ptr += inc_x;
+#endif
+
+ ap[0] = a_ptr;
+ ap[1] = a_ptr + lda;
+ ap[2] = ap[1] + lda;
+ ap[3] = ap[2] + lda;
+ zgemv_kernel_16x4(NB,ap,xbuffer,ybuffer);
+ a_ptr += 4 * lda;
+ }
+
+ for( i = 0; i < n2 ; i++)
+ {
+#if !defined(XCONJ)
+ xbuffer[0] = alpha_r * x_ptr[0] - alpha_i * x_ptr[1];
+ xbuffer[1] = alpha_r * x_ptr[1] + alpha_i * x_ptr[0];
+ x_ptr += inc_x;
+#else
+ xbuffer[0] = alpha_r * x_ptr[0] + alpha_i * x_ptr[1];
+ xbuffer[1] = alpha_r * x_ptr[1] - alpha_i * x_ptr[0];
+ x_ptr += inc_x;
+#endif
+
+ zgemv_kernel_16x1(NB,a_ptr,xbuffer,ybuffer);
+ a_ptr += 1 * lda;
+
+ }
+ add_y(NB,ybuffer,y_ptr,inc_y);
+ a += 2 * NB;
+ y_ptr += NB * inc_y;
+ }
+ j=0;
+ while ( j < (m % 16))
+ {
+ a_ptr = a;
+ x_ptr = x;
+ FLOAT temp_r = 0.0;
+ FLOAT temp_i = 0.0;
+ for( i = 0; i < n; i++ )
+ {
+#if !defined(CONJ)
+#if !defined(XCONJ)
+ temp_r += a_ptr[0] * x_ptr[0] - a_ptr[1] * x_ptr[1];
+ temp_i += a_ptr[0] * x_ptr[1] + a_ptr[1] * x_ptr[0];
+#else
+ temp_r += a_ptr[0] * x_ptr[0] + a_ptr[1] * x_ptr[1];
+ temp_i += a_ptr[0] * x_ptr[1] - a_ptr[1] * x_ptr[0];
+#endif
+#else
+#if !defined(XCONJ)
+ temp_r += a_ptr[0] * x_ptr[0] + a_ptr[1] * x_ptr[1];
+ temp_i += a_ptr[0] * x_ptr[1] - a_ptr[1] * x_ptr[0];
+#else
+ temp_r += a_ptr[0] * x_ptr[0] - a_ptr[1] * x_ptr[1];
+ temp_i += a_ptr[0] * x_ptr[1] + a_ptr[1] * x_ptr[0];
+#endif
+#endif
+
+
+ a_ptr += lda;
+ x_ptr += inc_x;
+ }
+
+#if !defined(XCONJ)
+ y_ptr[0] += alpha_r * temp_r - alpha_i * temp_i;
+ y_ptr[1] += alpha_r * temp_i + alpha_i * temp_r;
+#else
+ y_ptr[0] += alpha_r * temp_r + alpha_i * temp_i;
+ y_ptr[1] -= alpha_r * temp_i - alpha_i * temp_r;
+#endif
+ y_ptr += inc_y;
+ a+=2;
+ j++;
+ }
+ return(0);
+}
+
+
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