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update to snapshot spandsp-20080919.tar.gz

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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@9770 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale
2008-10-01 03:59:45 +00:00
parent 7460c20ecd
commit 2825fb6e5b
40 changed files with 717 additions and 544 deletions
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53
libs/spandsp/src/vector_float.c
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@@ -22,7 +22,7 @@
* 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 1.12 2008/09/16 15:21:52 steveu Exp $
* $Id: vector_float.c,v 1.14 2008/09/18 13:54:32 steveu Exp $
*/
/*! \file */
@@ -337,22 +337,25 @@ float vec_dot_prodf(const float x[], const float y[], int n)
{
int i;
float z;
__m128 num1, num2, num3, num4;
__m128 n1;
__m128 n2;
__m128 n3;
__m128 n4;
z = 0.0f;
if ((i = n & ~3))
{
num4 = _mm_setzero_ps(); //sets sum to zero
n4 = _mm_setzero_ps(); //sets sum to zero
for (i -= 4; i >= 0; i -= 4)
{
num1 = _mm_loadu_ps(x + i);
num2 = _mm_loadu_ps(y + i);
num3 = _mm_mul_ps(num1, num2);
num4 = _mm_add_ps(num4, num3);
n1 = _mm_loadu_ps(x + i);
n2 = _mm_loadu_ps(y + i);
n3 = _mm_mul_ps(n1, n2);
n4 = _mm_add_ps(n4, n3);
}
num4 = _mm_add_ps(_mm_movehl_ps(num4, num4), num4);
num4 = _mm_add_ss(_mm_shuffle_ps(num4, num4, 1), num4);
_mm_store_ss(&z, num4);
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 in an SSE2 register */
switch (n & 3)
@@ -405,4 +408,34 @@ long double vec_dot_prodl(const long double x[], const long double y[], int n)
}
/*- End of function --------------------------------------------------------*/
#endif
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 --------------------------------------------------------*/
void vec_lmsf(const float x[], float y[], int n, float error)
{
int i;
for (i = 0; i < n; i++)
{
y[i] += x[i]*error;
/* Leak a little to tame uncontrolled wandering */
y[i] *= 0.9999f;
}
}
/*- End of function --------------------------------------------------------*/
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 ------------------------------------------------------------*/