1 files changed, 59 insertions, 0 deletions
diff --git a/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_std_f64.c b/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_std_f64.c
new file mode 100644
index 0000000..620ec04
--- /dev/null
+++ b/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_std_f64.c
@@ -0,0 +1,59 @@
+/* ----------------------------------------------------------------------
+ * Project:      CMSIS DSP Library
+ * Title:        arm_std_f64.c
+ * Description:  Standard deviation of the elements of a floating-point vector
+ *
+ * $Date:        13 September 2021
+ * $Revision:    V1.10.0
+ *
+ * Target Processor: Cortex-M and Cortex-A cores
+ * -------------------------------------------------------------------- */
+/*
+ * Copyright (C) 2010-2021 ARM Limited or its affiliates. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "dsp/statistics_functions.h"
+
+/**
+  @ingroup groupStats
+ */
+
+/**
+  @addtogroup STD
+  @{
+ */
+
+/**
+  @brief         Standard deviation of the elements of a floating-point vector.
+  @param[in]     pSrc       points to the input vector
+  @param[in]     blockSize  number of samples in input vector
+  @param[out]    pResult    standard deviation value returned here
+  @return        none
+ */
+void arm_std_f64(
+  const float64_t * pSrc,
+        uint32_t blockSize,
+        float64_t * pResult)
+{
+  float64_t var;
+  arm_var_f64(pSrc,blockSize,&var);
+  *pResult = sqrt(var);
+}
+
+/**
+  @} end of STD group
+ */