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Change-Id: Ia026c3f0f0d016627a4fb5a9032852c33d24b4d3

7 files changed, 501 insertions, 0 deletions

diff --git a/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/max.c b/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/max.c
new file mode 100644
index 0000000..a4739d7
--- /dev/null
+++ b/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/max.c
@@ -0,0 +1,85 @@
+#include "ref.h"
+
+void ref_max_f32(
+  float32_t * pSrc,
+  uint32_t blockSize,
+  float32_t * pResult,
+  uint32_t * pIndex)
+{
+	uint32_t i, ind=0;
+	float32_t max=-FLT_MAX;
+	
+	for(i=0;i<blockSize;i++)
+	{
+		if (max < pSrc[i])
+		{
+			max = pSrc[i];
+			ind = i;
+		}
+	}
+	*pResult = max;
+	*pIndex = ind;
+}
+
+void ref_max_q31(
+  q31_t * pSrc,
+  uint32_t blockSize,
+  q31_t * pResult,
+  uint32_t * pIndex)
+{
+	uint32_t i, ind=0;
+	q31_t max=INT_MIN;
+	
+	for(i=0;i<blockSize;i++)
+	{
+		if (max < pSrc[i])
+		{
+			max = pSrc[i];
+			ind = i;
+		}
+	}
+	*pResult = max;
+	*pIndex = ind;
+}
+
+void ref_max_q15(
+  q15_t * pSrc,
+  uint32_t blockSize,
+  q15_t * pResult,
+  uint32_t * pIndex)
+{
+	uint32_t i, ind=0;
+	q15_t max=SHRT_MIN;
+	
+	for(i=0;i<blockSize;i++)
+	{
+		if (max < pSrc[i])
+		{
+			max = pSrc[i];
+			ind = i;
+		}
+	}
+	*pResult = max;
+	*pIndex = ind;
+}
+
+void ref_max_q7(
+  q7_t * pSrc,
+  uint32_t blockSize,
+  q7_t * pResult,
+  uint32_t * pIndex)
+{
+	uint32_t i, ind=0;
+	q7_t max=SCHAR_MIN;
+	
+	for(i=0;i<blockSize;i++)
+	{
+		if (max < pSrc[i])
+		{
+			max = pSrc[i];
+			ind = i;
+		}
+	}
+	*pResult = max;
+	*pIndex = ind;
+}
diff --git a/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/mean.c b/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/mean.c
new file mode 100644
index 0000000..33d4a70
--- /dev/null
+++ b/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/mean.c
@@ -0,0 +1,61 @@
+#include "ref.h"
+
+void ref_mean_f32(
+  float32_t * pSrc,
+  uint32_t blockSize,
+  float32_t * pResult)
+{
+	uint32_t i;
+	float32_t sum=0;
+	
+	for(i=0;i<blockSize;i++)
+	{
+			sum += pSrc[i];
+	}
+	*pResult = sum / (float32_t)blockSize;
+}
+
+void ref_mean_q31(
+  q31_t * pSrc,
+  uint32_t blockSize,
+  q31_t * pResult)
+{
+	uint32_t i;
+	q63_t sum=0;
+	
+	for(i=0;i<blockSize;i++)
+	{
+			sum += pSrc[i];
+	}
+	*pResult = (q31_t) (sum / (int32_t) blockSize);
+}
+
+void ref_mean_q15(
+  q15_t * pSrc,
+  uint32_t blockSize,
+  q15_t * pResult)
+{
+	uint32_t i;
+	q31_t sum=0;
+	
+	for(i=0;i<blockSize;i++)
+	{
+			sum += pSrc[i];
+	}
+	*pResult = (q15_t) (sum / (int32_t) blockSize);
+}
+
+void ref_mean_q7(
+  q7_t * pSrc,
+  uint32_t blockSize,
+  q7_t * pResult)
+{
+	uint32_t i;
+	q31_t sum=0;
+	
+	for(i=0;i<blockSize;i++)
+	{
+			sum += pSrc[i];
+	}
+	*pResult = (q7_t) (sum / (int32_t) blockSize);
+}
diff --git a/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/min.c b/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/min.c
new file mode 100644
index 0000000..28c5949
--- /dev/null
+++ b/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/min.c
@@ -0,0 +1,85 @@
+#include "ref.h"
+
+void ref_min_f32(
+  float32_t * pSrc,
+  uint32_t blockSize,
+  float32_t * pResult,
+  uint32_t * pIndex)
+{
+	uint32_t i, ind=0;
+	float32_t min=FLT_MAX;
+	
+	for(i=0;i<blockSize;i++)
+	{
+		if (min > pSrc[i])
+		{
+			min = pSrc[i];
+			ind = i;
+		}
+	}
+	*pResult = min;
+	*pIndex = ind;
+}
+
+void ref_min_q31(
+  q31_t * pSrc,
+  uint32_t blockSize,
+  q31_t * pResult,
+  uint32_t * pIndex)
+{
+	uint32_t i, ind=0;
+	q31_t min=INT_MAX;
+	
+	for(i=0;i<blockSize;i++)
+	{
+		if (min > pSrc[i])
+		{
+			min = pSrc[i];
+			ind = i;
+		}
+	}
+	*pResult = min;
+	*pIndex = ind;
+}
+
+void ref_min_q15(
+  q15_t * pSrc,
+  uint32_t blockSize,
+  q15_t * pResult,
+  uint32_t * pIndex)
+{
+	uint32_t i, ind=0;
+	q15_t min=SHRT_MAX;
+	
+	for(i=0;i<blockSize;i++)
+	{
+		if (min > pSrc[i])
+		{
+			min = pSrc[i];
+			ind = i;
+		}
+	}
+	*pResult = min;
+	*pIndex = ind;
+}
+
+void ref_min_q7(
+  q7_t * pSrc,
+  uint32_t blockSize,
+  q7_t * pResult,
+  uint32_t * pIndex)
+{
+	uint32_t i, ind=0;
+	q7_t min=SCHAR_MAX;
+	
+	for(i=0;i<blockSize;i++)
+	{
+		if (min > pSrc[i])
+		{
+			min = pSrc[i];
+			ind = i;
+		}
+	}
+	*pResult = min;
+	*pIndex = ind;
+}
diff --git a/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/power.c b/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/power.c
new file mode 100644
index 0000000..6160bfe
--- /dev/null
+++ b/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/power.c
@@ -0,0 +1,61 @@
+#include "ref.h"
+
+void ref_power_f32(
+  float32_t * pSrc,
+  uint32_t blockSize,
+  float32_t * pResult)
+{
+	uint32_t i;
+	float32_t sumsq=0;
+	
+	for(i=0;i<blockSize;i++)
+	{
+			sumsq += pSrc[i] * pSrc[i];
+	}
+	*pResult = sumsq;
+}
+
+void ref_power_q31(
+  q31_t * pSrc,
+  uint32_t blockSize,
+  q63_t * pResult)
+{
+	uint32_t i;
+	q63_t sumsq=0;
+	
+	for(i=0;i<blockSize;i++)
+	{
+			sumsq += ((q63_t)pSrc[i] * pSrc[i]) >> 14;
+	}
+	*pResult = sumsq;
+}
+
+void ref_power_q15(
+  q15_t * pSrc,
+  uint32_t blockSize,
+  q63_t * pResult)
+{
+	uint32_t i;
+	q63_t sumsq=0;
+	
+	for(i=0;i<blockSize;i++)
+	{
+			sumsq += (q63_t)pSrc[i] * pSrc[i];
+	}
+	*pResult = sumsq;
+}
+
+void ref_power_q7(
+  q7_t * pSrc,
+  uint32_t blockSize,
+  q31_t * pResult)
+{
+	uint32_t i;
+	q31_t sumsq=0;
+	
+	for(i=0;i<blockSize;i++)
+	{
+			sumsq += (q31_t)pSrc[i] * pSrc[i];
+	}
+	*pResult = sumsq;
+}
diff --git a/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/rms.c b/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/rms.c
new file mode 100644
index 0000000..7b91163
--- /dev/null
+++ b/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/rms.c
@@ -0,0 +1,65 @@
+#include "ref.h"
+
+void ref_rms_f32(
+  float32_t * pSrc,
+  uint32_t blockSize,
+  float32_t * pResult)
+{
+	uint32_t i;
+	float32_t sumsq=0;
+	
+	for(i=0;i<blockSize;i++)
+	{
+			sumsq += pSrc[i] * pSrc[i];
+	}
+	*pResult = sqrtf(sumsq / (float32_t)blockSize);
+}
+
+void ref_rms_q31(
+  q31_t * pSrc,
+  uint32_t blockSize,
+  q31_t * pResult)
+{
+	uint32_t i;
+	q63_t sumsq=0;
+	q63_t tmp1;
+	q31_t tmp2;
+  
+  float help_float;
+  
+	for(i=0;i<blockSize;i++)
+	{
+			sumsq += (q63_t)pSrc[i] * pSrc[i];
+	}
+	tmp1 = (sumsq / (q63_t)blockSize) >> 31;
+	tmp2 = ref_sat_q31(tmp1);
+
+  /* GCC M0 problem: __aeabi_f2iz(QNAN) returns not 0 */
+  help_float = (sqrtf((float)tmp2 / 2147483648.0f) * 2147483648.0f);
+  /* Checking for a NAN value in help_float */
+  if (((*((int *)(&help_float))) & 0x7FC00000) == 0x7FC00000) {
+      help_float = 0;
+  }
+  *pResult = (q31_t)(help_float);
+
+//  *pResult = (q31_t)(sqrtf((float)tmp2 / 2147483648.0f) * 2147483648.0f);
+}
+
+void ref_rms_q15(
+  q15_t * pSrc,
+  uint32_t blockSize,
+  q15_t * pResult)
+{
+	uint32_t i;
+	q63_t sumsq=0;
+	q31_t tmp1;
+	q15_t tmp2;
+	
+	for(i=0;i<blockSize;i++)
+	{
+			sumsq += (q63_t)pSrc[i] * pSrc[i];
+	}
+	tmp1 = (sumsq / (q63_t)blockSize) >> 15;
+	tmp2 = ref_sat_q15(tmp1);
+	*pResult = (q15_t)(sqrtf((float)tmp2 / 32768.0f) * 32768.0f);
+}
diff --git a/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/std.c b/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/std.c
new file mode 100644
index 0000000..148b5c7
--- /dev/null
+++ b/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/std.c
@@ -0,0 +1,74 @@
+#include "ref.h"
+
+void ref_std_f32(
+  float32_t * pSrc,
+  uint32_t blockSize,
+  float32_t * pResult)
+{
+	uint32_t i;
+	float32_t sum=0, sumsq=0;
+	
+	if (blockSize == 1)
+	{
+		*pResult = 0;
+		return;
+	}
+	
+	for(i=0;i<blockSize;i++)
+	{
+			sum += pSrc[i];
+			sumsq += pSrc[i] * pSrc[i];
+	}
+	*pResult = sqrtf((sumsq - sum * sum / (float32_t)blockSize) / ((float32_t)blockSize - 1));
+}
+
+void ref_std_q31(
+  q31_t * pSrc,
+  uint32_t blockSize,
+  q31_t * pResult)
+{
+	uint32_t i;
+	q63_t sum=0, sumsq=0;
+	q31_t in;
+	
+	if (blockSize == 1)
+	{
+		*pResult = 0;
+		return;
+	}
+	
+	for(i=0;i<blockSize;i++)
+	{
+			in = pSrc[i] >> 8;
+			sum += in;
+			sumsq += (q63_t)in * in;
+	}
+	sumsq /= (q63_t)(blockSize - 1);
+	sum = sum * sum / (q63_t)(blockSize * (blockSize - 1));
+	*pResult = (q31_t)(sqrtf((float)( (sumsq - sum) >> 15) / 2147483648.0f ) * 2147483648.0f);
+}
+
+void ref_std_q15(
+  q15_t * pSrc,
+  uint32_t blockSize,
+  q15_t * pResult)
+{
+	uint32_t i;
+	q31_t sum=0;
+	q63_t sumsq=0;
+	
+	if (blockSize == 1)
+	{
+		*pResult = 0;
+		return;
+	}
+	
+	for(i=0;i<blockSize;i++)
+	{
+			sum += pSrc[i];
+			sumsq += (q63_t)pSrc[i] * pSrc[i];
+	}
+	sumsq /= (q63_t)(blockSize - 1);
+	sum = (q31_t)((q63_t)sum * sum / (q63_t)(blockSize * (blockSize - 1)));
+	*pResult = (q15_t)(sqrtf((float)ref_sat_q15( (sumsq - sum) >> 15) / 32768.0f ) * 32768.0f);
+}
diff --git a/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/var.c b/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/var.c
new file mode 100644
index 0000000..0dfb015
--- /dev/null
+++ b/DSP/DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/var.c
@@ -0,0 +1,70 @@
+#include "ref.h"
+
+void ref_var_f32(
+  float32_t * pSrc,
+  uint32_t blockSize,
+  float32_t * pResult)
+{
+	uint32_t i;
+	float32_t sum=0, sumsq=0;
+	
+	if (blockSize == 1)
+	{
+		*pResult = 0;
+		return;
+	}
+	
+	for(i=0;i<blockSize;i++)
+	{
+			sum += pSrc[i];
+			sumsq += pSrc[i] * pSrc[i];
+	}
+	*pResult = (sumsq - sum * sum / (float32_t)blockSize) / ((float32_t)blockSize - 1);
+}
+
+void ref_var_q31(
+  q31_t * pSrc,
+  uint32_t blockSize,
+  q31_t * pResult)
+{
+	uint32_t i;
+	q63_t sum=0, sumsq=0;
+	q31_t in;
+	
+	if (blockSize == 1)
+	{
+		*pResult = 0;
+		return;
+	}
+	
+	for(i=0;i<blockSize;i++)
+	{
+			in = pSrc[i] >> 8;
+			sum += in;
+			sumsq += (q63_t)in * in;
+	}
+	*pResult = (sumsq - sum * sum / (q31_t)blockSize) / ((q31_t)blockSize - 1) >> 15;
+}
+
+void ref_var_q15(
+  q15_t * pSrc,
+  uint32_t blockSize,
+  q15_t * pResult)
+{
+	uint32_t i;
+	q31_t sum=0;
+	q63_t sumsq=0;
+	
+	if (blockSize == 1)
+	{
+		*pResult = 0;
+		return;
+	}
+	
+	for(i=0;i<blockSize;i++)
+	{
+			sum += pSrc[i];
+			sumsq += (q63_t)pSrc[i] * pSrc[i];
+	}
+	*pResult = (q31_t)((sumsq - (q63_t)sum * sum / (q63_t)blockSize) / ((q63_t)blockSize - 1)) >> 15;
+}