--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spandsp-0.0.6pre17/src/vector_float.c	Fri Jun 25 15:50:58 2010 +0200
@@ -0,0 +1,920 @@
+/*
+ * SpanDSP - a series of DSP components for telephony
+ *
+ * vector_float.c - Floating vector arithmetic routines.
+ *
+ * Written by Steve Underwood <steveu@coppice.org>
+ *
+ * Copyright (C) 2006 Steve Underwood
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id: vector_float.c,v 1.22 2009/07/12 09:23:09 steveu Exp $
+ */
+
+/*! \file */
+
+#if defined(HAVE_CONFIG_H)
+#include "config.h"
+#endif
+
+#include <inttypes.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#if defined(HAVE_TGMATH_H)
+#include <tgmath.h>
+#endif
+#if defined(HAVE_MATH_H)
+#include <math.h>
+#endif
+#include <assert.h>
+
+#include "floating_fudge.h"
+#include "mmx_sse_decs.h"
+
+#include "spandsp/telephony.h"
+#include "spandsp/vector_float.h"
+
+#if defined(__GNUC__)  &&  defined(SPANDSP_USE_SSE2)
+SPAN_DECLARE(void) vec_copyf(float z[], const float x[], int n)
+{
+    int i;
+    __m128 n1;
+ 
+    if ((i = n & ~3))
+    {
+        for (i -= 4;  i >= 0;  i -= 4)
+        {
+            n1 = _mm_loadu_ps(x + i);
+            _mm_storeu_ps(z + i, n1);
+        }
+    }
+    /* Now deal with the last 1 to 3 elements, which don't fill an SSE2 register */
+    switch (n & 3)
+    {
+    case 3:
+        z[n - 3] = x[n - 3];
+    case 2:
+        z[n - 2] = x[n - 2];
+    case 1:
+        z[n - 1] = x[n - 1];
+    }
+}
+#else
+SPAN_DECLARE(void) vec_copyf(float z[], const float x[], int n)
+{
+    int i;
+    
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i];
+}
+#endif
+/*- End of function --------------------------------------------------------*/
+
+SPAN_DECLARE(void) vec_copy(double z[], const double x[], int n)
+{
+    int i;
+    
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i];
+}
+/*- End of function --------------------------------------------------------*/
+
+#if defined(HAVE_LONG_DOUBLE)
+SPAN_DECLARE(void) vec_copyl(long double z[], const long double x[], int n)
+{
+    int i;
+    
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i];
+}
+/*- End of function --------------------------------------------------------*/
+#endif
+
+#if defined(__GNUC__)  &&  defined(SPANDSP_USE_SSE2)
+SPAN_DECLARE(void) vec_negatef(float z[], const float x[], int n)
+{
+    int i;
+	static const uint32_t mask = 0x80000000;
+	static const float *fmask = (float *) &mask;
+    __m128 n1;
+    __m128 n2;
+ 
+    if ((i = n & ~3))
+    {
+        n2 = _mm_set1_ps(*fmask);
+        for (i -= 4;  i >= 0;  i -= 4)
+        {
+            n1 = _mm_loadu_ps(x + i);
+		    n1 = _mm_xor_ps(n1, n2);
+            _mm_storeu_ps(z + i, n1);
+        }
+    }
+    /* Now deal with the last 1 to 3 elements, which don't fill an SSE2 register */
+    switch (n & 3)
+    {
+    case 3:
+        z[n - 3] = -x[n - 3];
+    case 2:
+        z[n - 2] = -x[n - 2];
+    case 1:
+        z[n - 1] = -x[n - 1];
+    }
+}
+#else
+SPAN_DECLARE(void) vec_negatef(float z[], const float x[], int n)
+{
+    int i;
+    
+    for (i = 0;  i < n;  i++)
+        z[i] = -x[i];
+}
+#endif
+/*- End of function --------------------------------------------------------*/
+
+SPAN_DECLARE(void) vec_negate(double z[], const double x[], int n)
+{
+    int i;
+    
+    for (i = 0;  i < n;  i++)
+        z[i] = -x[i];
+}
+/*- End of function --------------------------------------------------------*/
+
+#if defined(HAVE_LONG_DOUBLE)
+SPAN_DECLARE(void) vec_negatel(long double z[], const long double x[], int n)
+{
+    int i;
+    
+    for (i = 0;  i < n;  i++)
+        z[i] = -x[i];
+}
+/*- End of function --------------------------------------------------------*/
+#endif
+
+#if defined(__GNUC__)  &&  defined(SPANDSP_USE_SSE2)
+SPAN_DECLARE(void) vec_zerof(float z[], int n)
+{
+    int i;
+    __m128 n1;
+ 
+    if ((i = n & ~3))
+    {
+        n1 = _mm_setzero_ps();
+        for (i -= 4;  i >= 0;  i -= 4)
+            _mm_storeu_ps(z + i, n1);
+    }
+    /* Now deal with the last 1 to 3 elements, which don't fill an SSE2 register */
+    switch (n & 3)
+    {
+    case 3:
+        z[n - 3] = 0;
+    case 2:
+        z[n - 2] = 0;
+    case 1:
+        z[n - 1] = 0;
+    }
+}
+#else
+SPAN_DECLARE(void) vec_zerof(float z[], int n)
+{
+    int i;
+    
+    for (i = 0;  i < n;  i++)
+        z[i] = 0.0f;
+}
+#endif
+/*- End of function --------------------------------------------------------*/
+
+SPAN_DECLARE(void) vec_zero(double z[], int n)
+{
+    int i;
+    
+    for (i = 0;  i < n;  i++)
+        z[i] = 0.0;
+}
+/*- End of function --------------------------------------------------------*/
+
+#if defined(HAVE_LONG_DOUBLE)
+SPAN_DECLARE(void) vec_zerol(long double z[], int n)
+{
+    int i;
+    
+    for (i = 0;  i < n;  i++)
+        z[i] = 0.0L;
+}
+/*- End of function --------------------------------------------------------*/
+#endif
+
+#if defined(__GNUC__)  &&  defined(SPANDSP_USE_SSE2)
+SPAN_DECLARE(void) vec_setf(float z[], float x, int n)
+{
+    int i;
+    __m128 n1;
+ 
+    if ((i = n & ~3))
+    {
+        n1 = _mm_set1_ps(x);
+        for (i -= 4;  i >= 0;  i -= 4)
+            _mm_storeu_ps(z + i, n1);
+    }
+    /* Now deal with the last 1 to 3 elements, which don't fill an SSE2 register */
+    switch (n & 3)
+    {
+    case 3:
+        z[n - 3] = x;
+    case 2:
+        z[n - 2] = x;
+    case 1:
+        z[n - 1] = x;
+    }
+}
+#else
+SPAN_DECLARE(void) vec_setf(float z[], float x, int n)
+{
+    int i;
+    
+    for (i = 0;  i < n;  i++)
+        z[i] = x;
+}
+#endif
+/*- End of function --------------------------------------------------------*/
+
+SPAN_DECLARE(void) vec_set(double z[], double x, int n)
+{
+    int i;
+    
+    for (i = 0;  i < n;  i++)
+        z[i] = x;
+}
+/*- End of function --------------------------------------------------------*/
+
+#if defined(HAVE_LONG_DOUBLE)
+SPAN_DECLARE(void) vec_setl(long double z[], long double x, int n)
+{
+    int i;
+    
+    for (i = 0;  i < n;  i++)
+        z[i] = x;
+}
+/*- End of function --------------------------------------------------------*/
+#endif
+
+#if defined(__GNUC__)  &&  defined(SPANDSP_USE_SSE2)
+SPAN_DECLARE(void) vec_addf(float z[], const float x[], const float y[], int n)
+{
+    int i;
+    __m128 n1;
+    __m128 n2;
+ 
+    if ((i = n & ~3))
+    {
+        for (i -= 4;  i >= 0;  i -= 4)
+        {
+            n1 = _mm_loadu_ps(x + i);
+            n2 = _mm_loadu_ps(y + i);
+            n2 = _mm_add_ps(n1, n2);
+            _mm_storeu_ps(z + i, n2);
+        }
+    }
+    /* Now deal with the last 1 to 3 elements, which don't fill an SSE2 register */
+    switch (n & 3)
+    {
+    case 3:
+        z[n - 3] = x[n - 3] + y[n - 3];
+    case 2:
+        z[n - 2] = x[n - 2] + y[n - 2];
+    case 1:
+        z[n - 1] = x[n - 1] + y[n - 1];
+    }
+}
+#else
+SPAN_DECLARE(void) vec_addf(float z[], const float x[], const float y[], int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i] + y[i];
+}
+#endif
+/*- End of function --------------------------------------------------------*/
+
+SPAN_DECLARE(void) vec_add(double z[], const double x[], const double y[], int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i] + y[i];
+}
+/*- End of function --------------------------------------------------------*/
+
+#if defined(HAVE_LONG_DOUBLE)
+SPAN_DECLARE(void) vec_addl(long double z[], const long double x[], const long double y[], int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i] + y[i];
+}
+/*- End of function --------------------------------------------------------*/
+#endif
+
+#if defined(__GNUC__)  &&  defined(SPANDSP_USE_SSE2)
+SPAN_DECLARE(void) vec_scaledxy_addf(float z[], const float x[], float x_scale, const float y[], float y_scale, int n)
+{
+    int i;
+    __m128 n1;
+    __m128 n2;
+    __m128 n3;
+    __m128 n4;
+ 
+    if ((i = n & ~3))
+    {
+        n3 = _mm_set1_ps(x_scale);
+        n4 = _mm_set1_ps(y_scale);
+        for (i -= 4;  i >= 0;  i -= 4)
+        {
+            n1 = _mm_loadu_ps(x + i);
+            n2 = _mm_loadu_ps(y + i);
+            n1 = _mm_mul_ps(n1, n3);
+            n2 = _mm_mul_ps(n2, n4);
+            n2 = _mm_add_ps(n1, n2);
+            _mm_storeu_ps(z + i, n2);
+        }
+    }
+    /* Now deal with the last 1 to 3 elements, which don't fill an SSE2 register */
+    switch (n & 3)
+    {
+    case 3:
+        z[n - 3] = x[n - 3]*x_scale + y[n - 3]*y_scale;
+    case 2:
+        z[n - 2] = x[n - 2]*x_scale + y[n - 2]*y_scale;
+    case 1:
+        z[n - 1] = x[n - 1]*x_scale + y[n - 1]*y_scale;
+    }
+}
+#else
+SPAN_DECLARE(void) vec_scaledxy_addf(float z[], const float x[], float x_scale, const float y[], float y_scale, int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i]*x_scale + y[i]*y_scale;
+}
+#endif
+/*- End of function --------------------------------------------------------*/
+
+SPAN_DECLARE(void) vec_scaledxy_add(double z[], const double x[], double x_scale, const double y[], double y_scale, int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i]*x_scale + y[i]*y_scale;
+}
+/*- End of function --------------------------------------------------------*/
+
+#if defined(HAVE_LONG_DOUBLE)
+SPAN_DECLARE(void) vec_scaledxy_addl(long double z[], const long double x[], long double x_scale, const long double y[], long double y_scale, int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i]*x_scale + y[i]*y_scale;
+}
+/*- End of function --------------------------------------------------------*/
+#endif
+
+#if defined(__GNUC__)  &&  defined(SPANDSP_USE_SSE2)
+SPAN_DECLARE(void) vec_scaledy_addf(float z[], const float x[], const float y[], float y_scale, int n)
+{
+    int i;
+    __m128 n1;
+    __m128 n2;
+    __m128 n3;
+ 
+    if ((i = n & ~3))
+    {
+        n3 = _mm_set1_ps(y_scale);
+        for (i -= 4;  i >= 0;  i -= 4)
+        {
+            n1 = _mm_loadu_ps(x + i);
+            n2 = _mm_loadu_ps(y + i);
+            n2 = _mm_mul_ps(n2, n3);
+            n2 = _mm_add_ps(n1, n2);
+            _mm_storeu_ps(z + i, n2);
+        }
+    }
+    /* Now deal with the last 1 to 3 elements, which don't fill an SSE2 register */
+    switch (n & 3)
+    {
+    case 3:
+        z[n - 3] = x[n - 3] + y[n - 3]*y_scale;
+    case 2:
+        z[n - 2] = x[n - 2] + y[n - 2]*y_scale;
+    case 1:
+        z[n - 1] = x[n - 1] + y[n - 1]*y_scale;
+    }
+}
+#else
+SPAN_DECLARE(void) vec_scaledy_addf(float z[], const float x[], const float y[], float y_scale, int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i] + y[i]*y_scale;
+}
+#endif
+/*- End of function --------------------------------------------------------*/
+
+SPAN_DECLARE(void) vec_scaledy_add(double z[], const double x[], const double y[], double y_scale, int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i] + y[i]*y_scale;
+}
+/*- End of function --------------------------------------------------------*/
+
+#if defined(HAVE_LONG_DOUBLE)
+SPAN_DECLARE(void) vec_scaledy_addl(long double z[], const long double x[], const long double y[], long double y_scale, int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i] + y[i]*y_scale;
+}
+/*- End of function --------------------------------------------------------*/
+#endif
+
+#if defined(__GNUC__)  &&  defined(SPANDSP_USE_SSE2)
+SPAN_DECLARE(void) vec_subf(float z[], const float x[], const float y[], int n)
+{
+    int i;
+    __m128 n1;
+    __m128 n2;
+ 
+    if ((i = n & ~3))
+    {
+        for (i -= 4;  i >= 0;  i -= 4)
+        {
+            n1 = _mm_loadu_ps(x + i);
+            n2 = _mm_loadu_ps(y + i);
+            n2 = _mm_sub_ps(n1, n2);
+            _mm_storeu_ps(z + i, n2);
+        }
+    }
+    /* Now deal with the last 1 to 3 elements, which don't fill an SSE2 register */
+    switch (n & 3)
+    {
+    case 3:
+        z[n - 3] = x[n - 3] - y[n - 3];
+    case 2:
+        z[n - 2] = x[n - 2] - y[n - 2];
+    case 1:
+        z[n - 1] = x[n - 1] - y[n - 1];
+    }
+}
+#else
+SPAN_DECLARE(void) vec_subf(float z[], const float x[], const float y[], int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i] - y[i];
+}
+#endif
+/*- End of function --------------------------------------------------------*/
+
+SPAN_DECLARE(void) vec_sub(double z[], const double x[], const double y[], int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i] - y[i];
+}
+/*- End of function --------------------------------------------------------*/
+
+#if defined(HAVE_LONG_DOUBLE)
+SPAN_DECLARE(void) vec_subl(long double z[], const long double x[], const long double y[], int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i] - y[i];
+}
+/*- End of function --------------------------------------------------------*/
+#endif
+
+SPAN_DECLARE(void) vec_scaledxy_subf(float z[], const float x[], float x_scale, const float y[], float y_scale, int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i]*x_scale - y[i]*y_scale;
+}
+/*- End of function --------------------------------------------------------*/
+
+SPAN_DECLARE(void) vec_scaledxy_sub(double z[], const double x[], double x_scale, const double y[], double y_scale, int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i]*x_scale - y[i]*y_scale;
+}
+/*- End of function --------------------------------------------------------*/
+
+#if defined(HAVE_LONG_DOUBLE)
+SPAN_DECLARE(void) vec_scaledxy_subl(long double z[], const long double x[], long double x_scale, const long double y[], long double y_scale, int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i]*x_scale - y[i]*y_scale;
+}
+/*- End of function --------------------------------------------------------*/
+#endif
+
+#if defined(__GNUC__)  &&  defined(SPANDSP_USE_SSE2)
+SPAN_DECLARE(void) vec_scalar_mulf(float z[], const float x[], float y, int n)
+{
+    int i;
+    __m128 n1;
+    __m128 n2;
+ 
+    if ((i = n & ~3))
+    {
+        n2 = _mm_set1_ps(y);
+        for (i -= 4;  i >= 0;  i -= 4)
+        {
+            n1 = _mm_loadu_ps(x + i);
+            n1 = _mm_mul_ps(n1, n2);
+            _mm_storeu_ps(z + i, n1);
+        }
+    }
+    /* Now deal with the last 1 to 3 elements, which don't fill an SSE2 register */
+    switch (n & 3)
+    {
+    case 3:
+        z[n - 3] = x[n - 3]*y;
+    case 2:
+        z[n - 2] = x[n - 2]*y;
+    case 1:
+        z[n - 1] = x[n - 1]*y;
+    }
+}
+#else
+SPAN_DECLARE(void) vec_scalar_mulf(float z[], const float x[], float y, int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i]*y;
+}
+#endif
+/*- End of function --------------------------------------------------------*/
+
+SPAN_DECLARE(void) vec_scalar_mul(double z[], const double x[], double y, int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i]*y;
+}
+/*- End of function --------------------------------------------------------*/
+
+#if defined(__GNUC__)  &&  defined(SPANDSP_USE_SSE2)
+SPAN_DECLARE(void) vec_scalar_addf(float z[], const float x[], float y, int n)
+{
+    int i;
+    __m128 n1;
+    __m128 n2;
+ 
+    if ((i = n & ~3))
+    {
+        n2 = _mm_set1_ps(y);
+        for (i -= 4;  i >= 0;  i -= 4)
+        {
+            n1 = _mm_loadu_ps(x + i);
+            n1 = _mm_add_ps(n1, n2);
+            _mm_storeu_ps(z + i, n1);
+        }
+    }
+    /* Now deal with the last 1 to 3 elements, which don't fill an SSE2 register */
+    switch (n & 3)
+    {
+    case 3:
+        z[n - 3] = x[n - 3] + y;
+    case 2:
+        z[n - 2] = x[n - 2] + y;
+    case 1:
+        z[n - 1] = x[n - 1] + y;
+    }
+}
+#else
+SPAN_DECLARE(void) vec_scalar_addf(float z[], const float x[], float y, int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i] + y;
+}
+#endif
+/*- End of function --------------------------------------------------------*/
+
+SPAN_DECLARE(void) vec_scalar_add(double z[], const double x[], double y, int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i] + y;
+}
+/*- End of function --------------------------------------------------------*/
+
+#if defined(HAVE_LONG_DOUBLE)
+SPAN_DECLARE(void) vec_scalar_addl(long double z[], const long double x[], long double y, int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i] + y;
+}
+/*- End of function --------------------------------------------------------*/
+#endif
+
+#if defined(__GNUC__)  &&  defined(SPANDSP_USE_SSE2)
+SPAN_DECLARE(void) vec_scalar_subf(float z[], const float x[], float y, int n)
+{
+    int i;
+    __m128 n1;
+    __m128 n2;
+ 
+    if ((i = n & ~3))
+    {
+        n2 = _mm_set1_ps(y);
+        for (i -= 4;  i >= 0;  i -= 4)
+        {
+            n1 = _mm_loadu_ps(x + i);
+            n1 = _mm_sub_ps(n1, n2);
+            _mm_storeu_ps(z + i, n1);
+        }
+    }
+    /* Now deal with the last 1 to 3 elements, which don't fill an SSE2 register */
+    switch (n & 3)
+    {
+    case 3:
+        z[n - 3] = x[n - 3] - y;
+    case 2:
+        z[n - 2] = x[n - 2] - y;
+    case 1:
+        z[n - 1] = x[n - 1] - y;
+    }
+}
+#else
+SPAN_DECLARE(void) vec_scalar_subf(float z[], const float x[], float y, int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i] - y;
+}
+#endif
+/*- End of function --------------------------------------------------------*/
+
+SPAN_DECLARE(void) vec_scalar_sub(double z[], const double x[], double y, int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i] - y;
+}
+/*- End of function --------------------------------------------------------*/
+
+#if defined(HAVE_LONG_DOUBLE)
+SPAN_DECLARE(void) vec_scalar_subl(long double z[], const long double x[], long double y, int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i] - y;
+}
+/*- End of function --------------------------------------------------------*/
+#endif
+
+#if defined(__GNUC__)  &&  defined(SPANDSP_USE_SSE2)
+SPAN_DECLARE(void) vec_mulf(float z[], const float x[], const float y[], int n)
+{
+    int i;
+    __m128 n1;
+    __m128 n2;
+    __m128 n3;
+ 
+    if ((i = n & ~3))
+    {
+        for (i -= 4;  i >= 0;  i -= 4)
+        {
+            n1 = _mm_loadu_ps(x + i);
+            n2 = _mm_loadu_ps(y + i);
+            n3 = _mm_mul_ps(n1, n2);
+            _mm_storeu_ps(z + i, n3);
+        }
+    }
+    /* Now deal with the last 1 to 3 elements, which don't fill an SSE2 register */
+    switch (n & 3)
+    {
+    case 3:
+        z[n - 3] = x[n - 3]*y[n - 3];
+    case 2:
+        z[n - 2] = x[n - 2]*y[n - 2];
+    case 1:
+        z[n - 1] = x[n - 1]*y[n - 1];
+    }
+}
+#else
+SPAN_DECLARE(void) vec_mulf(float z[], const float x[], const float y[], int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i]*y[i];
+}
+/*- End of function --------------------------------------------------------*/
+#endif
+
+SPAN_DECLARE(void) vec_mul(double z[], const double x[], const double y[], int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i]*y[i];
+}
+/*- End of function --------------------------------------------------------*/
+
+#if defined(HAVE_LONG_DOUBLE)
+SPAN_DECLARE(void) vec_mull(long double z[], const long double x[], const long double y[], int n)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+        z[i] = x[i]*y[i];
+}
+/*- End of function --------------------------------------------------------*/
+#endif
+
+#if defined(__GNUC__)  &&  defined(SPANDSP_USE_SSE2)
+SPAN_DECLARE(float) vec_dot_prodf(const float x[], const float y[], int n)
+{
+    int i;
+    float z;
+    __m128 n1;
+    __m128 n2;
+    __m128 n3;
+    __m128 n4;
+ 
+    z = 0.0f;
+    if ((i = n & ~3))
+    {
+        n4 = _mm_setzero_ps();  //sets sum to zero
+        for (i -= 4;  i >= 0;  i -= 4)
+        {
+            n1 = _mm_loadu_ps(x + i);
+            n2 = _mm_loadu_ps(y + i);
+            n3 = _mm_mul_ps(n1, n2);
+            n4 = _mm_add_ps(n4, n3);
+        }
+        n4 = _mm_add_ps(_mm_movehl_ps(n4, n4), n4);
+        n4 = _mm_add_ss(_mm_shuffle_ps(n4, n4, 1), n4);
+        _mm_store_ss(&z, n4);
+    }
+    /* Now deal with the last 1 to 3 elements, which don't fill an SSE2 register */
+    switch (n & 3)
+    {
+    case 3:
+        z += x[n - 3]*y[n - 3];
+    case 2:
+        z += x[n - 2]*y[n - 2];
+    case 1:
+        z += x[n - 1]*y[n - 1];
+    }
+    return z;
+}
+#else
+SPAN_DECLARE(float) vec_dot_prodf(const float x[], const float y[], int n)
+{
+    int i;
+    float z;
+
+    z = 0.0f;
+    for (i = 0;  i < n;  i++)
+        z += x[i]*y[i];
+    return z;
+}
+/*- End of function --------------------------------------------------------*/
+#endif
+
+SPAN_DECLARE(double) vec_dot_prod(const double x[], const double y[], int n)
+{
+    int i;
+    double z;
+
+    z = 0.0;
+    for (i = 0;  i < n;  i++)
+        z += x[i]*y[i];
+    return z;
+}
+/*- End of function --------------------------------------------------------*/
+
+#if defined(HAVE_LONG_DOUBLE)
+SPAN_DECLARE(long double) vec_dot_prodl(const long double x[], const long double y[], int n)
+{
+    int i;
+    long double z;
+
+    z = 0.0L;
+    for (i = 0;  i < n;  i++)
+        z += x[i]*y[i];
+    return z;
+}
+/*- End of function --------------------------------------------------------*/
+#endif
+
+SPAN_DECLARE(float) vec_circular_dot_prodf(const float x[], const float y[], int n, int pos)
+{
+    float z;
+
+    z = vec_dot_prodf(&x[pos], &y[0], n - pos);
+    z += vec_dot_prodf(&x[0], &y[n - pos], pos);
+    return z;
+}
+/*- End of function --------------------------------------------------------*/
+
+#define LMS_LEAK_RATE   0.9999f
+
+#if defined(__GNUC__)  &&  defined(SPANDSP_USE_SSE2)
+SPAN_DECLARE(void) vec_lmsf(const float x[], float y[], int n, float error)
+{
+    int i;
+    __m128 n1;
+    __m128 n2;
+    __m128 n3;
+    __m128 n4;
+ 
+    if ((i = n & ~3))
+    {
+        n3 = _mm_set1_ps(error);
+        n4 = _mm_set1_ps(LMS_LEAK_RATE);
+        for (i -= 4;  i >= 0;  i -= 4)
+        {
+            n1 = _mm_loadu_ps(x + i);
+            n2 = _mm_loadu_ps(y + i);
+            n1 = _mm_mul_ps(n1, n3);
+            n2 = _mm_mul_ps(n2, n4);
+            n1 = _mm_add_ps(n1, n2);
+            _mm_storeu_ps(y + i, n1);
+        }
+    }
+    /* Now deal with the last 1 to 3 elements, which don't fill an SSE2 register */
+    switch (n & 3)
+    {
+    case 3:
+        y[n - 3] = y[n - 3]*LMS_LEAK_RATE + x[n - 3]*error;
+    case 2:
+        y[n - 2] = y[n - 2]*LMS_LEAK_RATE + x[n - 2]*error;
+    case 1:
+        y[n - 1] = y[n - 1]*LMS_LEAK_RATE + x[n - 1]*error;
+    }
+}
+#else
+SPAN_DECLARE(void) vec_lmsf(const float x[], float y[], int n, float error)
+{
+    int i;
+
+    for (i = 0;  i < n;  i++)
+    {
+        /* Leak a little to tame uncontrolled wandering */
+        y[i] = y[i]*LMS_LEAK_RATE + x[i]*error;
+    }
+}
+#endif
+/*- End of function --------------------------------------------------------*/
+
+SPAN_DECLARE(void) vec_circular_lmsf(const float x[], float y[], int n, int pos, float error)
+{
+    vec_lmsf(&x[pos], &y[0], n - pos, error);
+    vec_lmsf(&x[0], &y[n - pos], pos, error);
+}
+/*- End of function --------------------------------------------------------*/
+/*- End of file ------------------------------------------------------------*/